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src.rivoreo.one / emulators / simh / v3.8-2-rc1 / . / AltairZ80 / altairZ80_cpu.c
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/* altairz80_cpu.c: MITS Altair CPU (8080 and Z80)
Copyright (c) 2002-2010, Peter Schorn
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
PETER SCHORN BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of Peter Schorn shall not
be used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from Peter Schorn.
Based on work by Charles E Owen (c) 1997
Code for Z80 CPU from Frank D. Cringle ((c) 1995 under GNU license)
*/
#include "altairz80_defs.h"
#include <ctype.h>
#define SWITCHCPU_DEFAULT 0xfd
/* Debug flags */
#define IN_MSG (1 << 0)
#define OUT_MSG (1 << 1)
#if defined (_WIN32)
#include <windows.h>
#else
#include <unistd.h>
#endif
#define PCQ_SIZE 64 /* must be 2**n */
#define PCQ_SIZE_LOG2 6 /* log2 of PCQ_SIZE */
#define PCQ_MASK (PCQ_SIZE - 1)
#define PCQ_ENTRY(PC) if (pcq[pcq_p] != (PC)) { pcq[pcq_p = (pcq_p - 1) & PCQ_MASK] = (PC); }
#define FLAG_C 1
#define FLAG_N 2
#define FLAG_P 4
#define FLAG_H 16
#define FLAG_Z 64
#define FLAG_S 128
#define SETFLAG(f,c) AF = (c) ? AF | FLAG_ ## f : AF & ~FLAG_ ## f
#define TSTFLAG(f) ((AF & FLAG_ ## f) != 0)
#define LOW_DIGIT(x) ((x) & 0xf)
#define HIGH_DIGIT(x) (((x) >> 4) & 0xf)
#define LOW_REGISTER(x) ((x) & 0xff)
#define HIGH_REGISTER(x) (((x) >> 8) & 0xff)
#define SET_LOW_REGISTER(x, v) x = (((x) & 0xff00) | ((v) & 0xff))
#define SET_HIGH_REGISTER(x, v) x = (((x) & 0xff) | (((v) & 0xff) << 8))
#define PARITY(x) parityTable[(x) & 0xff]
/* SET_PV and SET_PV2 are used to provide correct PARITY flag semantics for the 8080 in cases
where the Z80 uses the overflow flag
*/
#define SET_PVS(s) ((chiptype == CHIP_TYPE_Z80) ? (((cbits >> 6) ^ (cbits >> 5)) & 4) : (PARITY(s)))
#define SET_PV (SET_PVS(sum))
#define SET_PV2(x) ((chiptype == CHIP_TYPE_Z80) ? (((temp == (x)) << 2)) : (PARITY(temp)))
/* CHECK_CPU_8080 must be invoked whenever a Z80 only instruction is executed
In case a Z80 instruction is executed on an 8080 the following two cases exist:
1) Trapping is enabled: execution stops
2) Trapping is not enabled: decoding continues with the next byte
*/
#define CHECK_CPU_8080 \
if (chiptype == CHIP_TYPE_8080) { \
if (cpu_unit.flags & UNIT_CPU_OPSTOP) { \
reason = STOP_OPCODE; \
goto end_decode; \
} \
else { \
sim_brk_pend[0] = FALSE; \
continue; \
} \
}
/* CHECK_CPU_Z80 must be invoked whenever a non Z80 instruction is executed */
#define CHECK_CPU_Z80 \
if (cpu_unit.flags & UNIT_CPU_OPSTOP) { \
reason = STOP_OPCODE; \
goto end_decode; \
}
#define POP(x) { \
register uint32 y = RAM_PP(SP); \
x = y + (RAM_PP(SP) << 8); \
}
#define JPC(cond) { \
tStates += 10; \
if (cond) { \
PCQ_ENTRY(PCX); \
PC = GET_WORD(PC); \
} \
else { \
PC += 2; \
} \
}
#define CALLC(cond) { \
if (cond) { \
register uint32 adrr = GET_WORD(PC); \
CHECK_BREAK_WORD(SP - 2); \
PUSH(PC + 2); \
PCQ_ENTRY(PCX); \
PC = adrr; \
tStates += 17; \
} \
else { \
sim_brk_pend[0] = FALSE; \
PC += 2; \
tStates += 10; \
} \
}
extern int32 sim_int_char;
extern int32 sio0s (const int32 port, const int32 io, const int32 data);
extern int32 sio0d (const int32 port, const int32 io, const int32 data);
extern int32 sio1s (const int32 port, const int32 io, const int32 data);
extern int32 sio1d (const int32 port, const int32 io, const int32 data);
extern int32 dsk10 (const int32 port, const int32 io, const int32 data);
extern int32 dsk11 (const int32 port, const int32 io, const int32 data);
extern int32 dsk12 (const int32 port, const int32 io, const int32 data);
extern int32 netStatus (const int32 port, const int32 io, const int32 data);
extern int32 netData (const int32 port, const int32 io, const int32 data);
extern int32 nulldev (const int32 port, const int32 io, const int32 data);
extern int32 hdsk_io (const int32 port, const int32 io, const int32 data);
extern int32 simh_dev (const int32 port, const int32 io, const int32 data);
extern int32 sr_dev (const int32 port, const int32 io, const int32 data);
extern void install_ALTAIRbootROM(void);
extern void do_SIMH_sleep(void);
extern void prepareMemoryAccessMessage(const t_addr loc);
extern void prepareInstructionMessage(const t_addr loc, const uint32 op);
extern FILE *sim_deb;
extern t_stat sim_instr_nommu(void);
extern uint8 MOPT[MAXBANKSIZE];
extern t_stat sim_instr_8086(void);
extern void cpu8086reset(void);
/* function prototypes */
static t_stat cpu_set_switcher (UNIT *uptr, int32 value, char *cptr, void *desc);
static t_stat cpu_reset_switcher(UNIT *uptr, int32 value, char *cptr, void *desc);
static t_stat cpu_show_switcher (FILE *st, UNIT *uptr, int32 val, void *desc);
static int32 switchcpu_io (const int32 port, const int32 io, const int32 data);
static t_stat cpu_set_altairrom (UNIT *uptr, int32 value, char *cptr, void *desc);
static t_stat cpu_set_noaltairrom (UNIT *uptr, int32 value, char *cptr, void *desc);
static t_stat cpu_set_nommu (UNIT *uptr, int32 value, char *cptr, void *desc);
static t_stat cpu_set_banked (UNIT *uptr, int32 value, char *cptr, void *desc);
static t_stat cpu_set_nonbanked (UNIT *uptr, int32 value, char *cptr, void *desc);
static t_stat cpu_set_ramtype (UNIT *uptr, int32 value, char *cptr, void *desc);
static t_stat cpu_set_chiptype (UNIT *uptr, int32 value, char *cptr, void *desc);
static t_stat cpu_set_size (UNIT *uptr, int32 value, char *cptr, void *desc);
static t_stat cpu_set_memory (UNIT *uptr, int32 value, char *cptr, void *desc);
static t_stat cpu_clear_command (UNIT *uptr, int32 value, char *cptr, void *desc);
static void cpu_clear(void);
static t_stat cpu_show (FILE *st, UNIT *uptr, int32 val, void *desc);
static t_stat chip_show (FILE *st, UNIT *uptr, int32 val, void *desc);
static t_stat cpu_ex(t_value *vptr, t_addr addr, UNIT *uptr, int32 sw);
static t_stat cpu_dep(t_value val, t_addr addr, UNIT *uptr, int32 sw);
static t_stat cpu_reset(DEVICE *dptr);
static t_stat sim_instr_mmu(void);
static uint32 GetBYTE(register uint32 Addr);
static void PutWORD(register uint32 Addr, const register uint32 Value);
static void PutBYTE(register uint32 Addr, const register uint32 Value);
void out(const uint32 Port, const uint32 Value);
uint32 in(const uint32 Port);
void altairz80_init(void);
t_stat sim_instr(void);
t_stat install_bootrom(int32 bootrom[], int32 size, int32 addr, int32 makeROM);
uint8 GetBYTEWrapper(const uint32 Addr);
void PutBYTEWrapper(const uint32 Addr, const uint32 Value);
uint8 GetByteDMA(const uint32 Addr);
void PutByteDMA(const uint32 Addr, const uint32 Value);
int32 getBankSelect(void);
void setBankSelect(const int32 b);
uint32 getCommon(void);
t_stat sim_load(FILE *fileref, char *cptr, char *fnam, int32 flag);
uint32 sim_map_resource(uint32 baseaddr, uint32 size, uint32 resource_type,
int32 (*routine)(const int32, const int32, const int32), uint8 unmap);
void PutBYTEExtended(register uint32 Addr, const register uint32 Value);
uint32 GetBYTEExtended(register uint32 Addr);
void cpu_raise_interrupt(uint32 irq);
/* CPU data structures
cpu_dev CPU device descriptor
cpu_unit CPU unit descriptor
cpu_reg CPU register list
cpu_mod CPU modifiers list
*/
UNIT cpu_unit = {
UDATA (NULL, UNIT_FIX | UNIT_BINK | UNIT_CPU_ALTAIRROM |
UNIT_CPU_STOPONHALT | UNIT_CPU_MMU, MAXBANKSIZE)
};
uint32 PCX = 0; /* external view of PC */
int32 AF_S; /* AF register */
int32 BC_S; /* BC register */
int32 DE_S; /* DE register */
int32 HL_S; /* HL register */
int32 IX_S; /* IX register */
int32 IY_S; /* IY register */
int32 PC_S = 0; /* 8080 / Z80 program counter */
int32 PCX_S = 0xFFFF0; /* 8086 program counter */
int32 SP_S; /* SP register */
int32 AF1_S; /* alternate AF register */
int32 BC1_S; /* alternate BC register */
int32 DE1_S; /* alternate DE register */
int32 HL1_S; /* alternate HL register */
int32 IFF_S; /* Interrupt Flip Flop */
int32 IR_S; /* Interrupt (upper) / Refresh (lower) register */
int32 AX_S; /* AX register (8086) */
int32 BX_S; /* BX register (8086) */
int32 CX_S; /* CX register (8086) */
int32 DX_S; /* DX register (8086) */
int32 CS_S; /* CS register (8086) */
int32 DS_S; /* DS register (8086) */
int32 ES_S; /* ES register (8086) */
int32 SS_S; /* SS register (8086) */
int32 DI_S; /* DI register (8086) */
int32 SI_S; /* SI register (8086) */
int32 BP_S; /* BP register (8086) */
int32 SPX_S; /* SP register (8086) */
int32 IP_S; /* IP register (8086) */
int32 FLAGS_S; /* flags register (8086) */
int32 SR = 0; /* switch register */
static int32 bankSelect = 0; /* determines selected memory bank */
static uint32 common = 0xc000; /* addresses >= 'common' are in common memory */
static uint32 previousCapacity = MAXBANKSIZE; /* safe for previous memory capacity */
static uint32 clockFrequency = 0; /* in kHz, 0 means as fast as possible */
static uint32 sliceLength = 10; /* length of time-slice for CPU speed */
/* adjustment in milliseconds */
static uint32 executedTStates = 0; /* executed t-states */
static uint16 pcq[PCQ_SIZE] = { 0 }; /* PC queue */
static int32 pcq_p = 0; /* PC queue ptr */
static REG *pcq_r = NULL; /* PC queue reg ptr */
/* data structure for IN/OUT instructions */
struct idev {
int32 (*routine)(const int32, const int32, const int32);
};
static int32 switcherPort = SWITCHCPU_DEFAULT;
static struct idev oldSwitcherDevice = { NULL };
REG cpu_reg[] = {
{ HRDATA (AF, AF_S, 16) },
{ HRDATA (BC, BC_S, 16) },
{ HRDATA (DE, DE_S, 16) },
{ HRDATA (HL, HL_S, 16) },
{ HRDATA (IX, IX_S, 16) },
{ HRDATA (IY, IY_S, 16) },
{ HRDATA (PC, PC_S, 16 + MAXBANKSLOG2) }, /* 8080 / Z80 PC [6] */
{ HRDATA (PCX, PCX_S, 16 + MAXBANKSLOG2) }, /* 8086 PC [7] */
{ HRDATA (SP, SP_S, 16) },
{ HRDATA (AF1, AF1_S, 16) },
{ HRDATA (BC1, BC1_S, 16) },
{ HRDATA (DE1, DE1_S, 16) },
{ HRDATA (HL1, HL1_S, 16) },
{ GRDATA (IFF, IFF_S, 2, 2, 0) },
{ FLDATA (IR, IR_S, 8) },
{ HRDATA (AX, AX_S, 16) }, /* 8086 */
{ GRDATA (AL, AX_S, 16, 8, 0) }, /* 8086, low 8 bits of AX */
{ GRDATA (AH, AX_S, 16, 8, 8) }, /* 8086, high 8 bits of AX */
{ HRDATA (BX, BX_S, 16) }, /* 8086 */
{ GRDATA (BL, BX_S, 16, 8, 0) }, /* 8086, low 8 bits of BX */
{ GRDATA (BH, BX_S, 16, 8, 8) }, /* 8086, high 8 bits of BX */
{ HRDATA (CX, CX_S, 16) }, /* 8086 */
{ GRDATA (CL, CX_S, 16, 8, 0) }, /* 8086, low 8 bits of CX */
{ GRDATA (CH, CX_S, 16, 8, 8) }, /* 8086, high 8 bits of CX */
{ HRDATA (DX, DX_S, 16) }, /* 8086 */
{ GRDATA (DL, DX_S, 16, 8, 0) }, /* 8086, low 8 bits of DX */
{ GRDATA (DH, DX_S, 16, 8, 8) }, /* 8086, high 8 bits of DX */
{ HRDATA (SPX, SPX_S, 16) }, /* 8086 */
{ HRDATA (BP, BP_S, 16) }, /* 8086, Base Pointer */
{ HRDATA (SI, SI_S, 16) }, /* 8086, Source Index */
{ HRDATA (DI, DI_S, 16) }, /* 8086, Destination Index */
{ HRDATA (CS, CS_S, 16) }, /* 8086, Code Segment */
{ HRDATA (DS, DS_S, 16) }, /* 8086, Data Segment */
{ HRDATA (ES, ES_S, 16) }, /* 8086, Extra Segment */
{ HRDATA (SS, SS_S, 16) }, /* 8086, Stack Segment */
{ HRDATA (FLAGS, FLAGS_S, 16) }, /* 8086, FLAGS */
{ HRDATA (IP, IP_S, 16), REG_RO }, /* 8086, set via PC */
{ FLDATA (OPSTOP, cpu_unit.flags, UNIT_CPU_V_OPSTOP), REG_HRO },
{ HRDATA (SR, SR, 8) },
{ HRDATA (BANK, bankSelect, MAXBANKSLOG2) },
{ HRDATA (COMMON, common, 32) },
{ HRDATA (SWITCHERPORT, switcherPort, 8), },
{ DRDATA (CLOCK, clockFrequency, 32) },
{ DRDATA (SLICE, sliceLength, 16) },
{ DRDATA (TSTATES, executedTStates, 32), REG_RO },
{ HRDATA (CAPACITY, cpu_unit.capac, 32), REG_RO },
{ HRDATA (PREVCAP, previousCapacity, 32), REG_RO },
{ BRDATA (PCQ, pcq, 16, 16, PCQ_SIZE), REG_RO + REG_CIRC },
{ DRDATA (PCQP, pcq_p, PCQ_SIZE_LOG2), REG_HRO },
{ HRDATA (WRU, sim_int_char, 8) },
{ NULL }
};
static MTAB cpu_mod[] = {
{ MTAB_XTD | MTAB_VDV, CHIP_TYPE_8080, NULL, "8080", &cpu_set_chiptype },
{ MTAB_XTD | MTAB_VDV, CHIP_TYPE_Z80, NULL, "Z80", &cpu_set_chiptype },
{ MTAB_XTD | MTAB_VDV, CHIP_TYPE_8086, NULL, "8086", &cpu_set_chiptype },
{ UNIT_CPU_OPSTOP, UNIT_CPU_OPSTOP, "ITRAP", "ITRAP", NULL, &chip_show },
{ UNIT_CPU_OPSTOP, 0, "NOITRAP", "NOITRAP", NULL, &chip_show },
{ UNIT_CPU_STOPONHALT, UNIT_CPU_STOPONHALT,"STOPONHALT", "STOPONHALT", NULL },
{ UNIT_CPU_STOPONHALT, 0, "LOOPONHALT", "LOOPONHALT", NULL },
{ UNIT_CPU_BANKED, UNIT_CPU_BANKED, "BANKED", "BANKED", &cpu_set_banked },
{ UNIT_CPU_BANKED, 0, "NONBANKED", "NONBANKED", &cpu_set_nonbanked },
{ UNIT_CPU_ALTAIRROM, UNIT_CPU_ALTAIRROM, "ALTAIRROM", "ALTAIRROM", &cpu_set_altairrom },
{ UNIT_CPU_ALTAIRROM, 0, "NOALTAIRROM", "NOALTAIRROM", &cpu_set_noaltairrom},
{ UNIT_CPU_VERBOSE, UNIT_CPU_VERBOSE, "VERBOSE", "VERBOSE", NULL, &cpu_show },
{ UNIT_CPU_VERBOSE, 0, "QUIET", "QUIET", NULL },
{ MTAB_VDV, 0, NULL, "CLEARMEMORY", &cpu_clear_command },
{ UNIT_CPU_MMU, UNIT_CPU_MMU, "MMU", "MMU", NULL },
{ UNIT_CPU_MMU, 0, "NOMMU", "NOMMU", &cpu_set_nommu },
{ MTAB_XTD | MTAB_VDV, 0, NULL, "MEMORY", &cpu_set_memory },
{ UNIT_CPU_SWITCHER, UNIT_CPU_SWITCHER, "SWITCHER", "SWITCHER", &cpu_set_switcher, &cpu_show_switcher },
{ UNIT_CPU_SWITCHER, 0, "NOSWITCHER", "NOSWITCHER", &cpu_reset_switcher, &cpu_show_switcher },
{ MTAB_XTD | MTAB_VDV, 0, NULL, "AZ80", &cpu_set_ramtype },
{ MTAB_XTD | MTAB_VDV, 1, NULL, "HRAM", &cpu_set_ramtype },
{ MTAB_XTD | MTAB_VDV, 2, NULL, "VRAM", &cpu_set_ramtype },
{ MTAB_XTD | MTAB_VDV, 3, NULL, "CRAM", &cpu_set_ramtype },
{ MTAB_VDV, 4, NULL, "4KB", &cpu_set_size },
{ MTAB_VDV, 8, NULL, "8KB", &cpu_set_size },
{ MTAB_VDV, 12, NULL, "12KB", &cpu_set_size },
{ MTAB_VDV, 16, NULL, "16KB", &cpu_set_size },
{ MTAB_VDV, 20, NULL, "20KB", &cpu_set_size },
{ MTAB_VDV, 24, NULL, "24KB", &cpu_set_size },
{ MTAB_VDV, 28, NULL, "28KB", &cpu_set_size },
{ MTAB_VDV, 32, NULL, "32KB", &cpu_set_size },
{ MTAB_VDV, 36, NULL, "36KB", &cpu_set_size },
{ MTAB_VDV, 40, NULL, "40KB", &cpu_set_size },
{ MTAB_VDV, 44, NULL, "44KB", &cpu_set_size },
{ MTAB_VDV, 48, NULL, "48KB", &cpu_set_size },
{ MTAB_VDV, 52, NULL, "52KB", &cpu_set_size },
{ MTAB_VDV, 56, NULL, "56KB", &cpu_set_size },
{ MTAB_VDV, 60, NULL, "60KB", &cpu_set_size },
{ MTAB_VDV, 64, NULL, "64KB", &cpu_set_size },
{ 0 }
};
/* Debug Flags */
static DEBTAB cpu_dt[] = {
{ "LOG_IN", IN_MSG },
{ "LOG_OUT", OUT_MSG },
{ NULL, 0 }
};
DEVICE cpu_dev = {
"CPU", &cpu_unit, cpu_reg, cpu_mod,
1, 16, 16, 1, 16, 8,
&cpu_ex, &cpu_dep, &cpu_reset,
NULL, NULL, NULL,
NULL, DEV_DEBUG, 0,
cpu_dt, NULL, NULL
};
/* This is the I/O configuration table. There are 255 possible
device addresses, if a device is plugged to a port it's routine
address is here, 'nulldev' means no device is available
*/
static struct idev dev_table[256] = {
{&nulldev}, {&nulldev}, {&sio0d}, {&sio0s}, /* 00 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 04 */
{&dsk10}, {&dsk11}, {&dsk12}, {&nulldev}, /* 08 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 0C */
{&sio0s}, {&sio0d}, {&sio1s}, {&sio1d}, /* 10 */
{&sio0s}, {&sio0d}, {&sio0s}, {&sio0d}, /* 14 */
{&sio0s}, {&sio0d}, {&nulldev}, {&nulldev}, /* 18 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 1C */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 20 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 24 */
{&netStatus},{&netData},{&netStatus},{&netData}, /* 28 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 2C */
{&nulldev}, {&nulldev}, {&netStatus},{&netData}, /* 30 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 34 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 38 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 3C */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 40 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 44 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 48 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 4C */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 50 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 54 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 58 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 5C */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 60 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 64 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 68 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 6C */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 70 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 74 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 78 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 7C */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 80 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 84 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 88 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 8C */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 90 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 94 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 98 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* 9C */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* A0 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* A4 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* A8 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* AC */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* B0 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* B4 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* B8 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* BC */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* C0 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* C4 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* C8 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* CC */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* D0 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* D4 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* D8 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* DC */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* E0 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* E4 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* E8 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* EC */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* F0 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* F4 */
{&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /* F8 */
{&nulldev}, {&hdsk_io}, {&simh_dev}, {&sr_dev} /* FC */
};
static int32 ramtype = 0;
#define MAX_RAM_TYPE 3
int32 chiptype = CHIP_TYPE_8080;
void out(const uint32 Port, const uint32 Value) {
if ((cpu_dev.dctrl & OUT_MSG) && sim_deb) {
fprintf(sim_deb, "CPU: " ADDRESS_FORMAT
" OUT(port=0x%04x [%5d], value=0x%04x [%5d])\n", PCX, Port, Port, Value, Value);
fflush(sim_deb);
}
dev_table[Port & 0xff].routine(Port, 1, Value);
if ((cpu_dev.dctrl & OUT_MSG) && sim_deb) {
fprintf(sim_deb, "CPU: " ADDRESS_FORMAT
" OUT(port=0x%04x [%5d], value=0x%04x [%5d]) done\n", PCX, Port, Port, Value, Value);
fflush(sim_deb);
}
}
uint32 in(const uint32 Port) {
uint32 result;
if ((cpu_dev.dctrl & IN_MSG) && sim_deb) {
fprintf(sim_deb, "CPU: " ADDRESS_FORMAT
" IN(port=0x%04x [%5d])\n", PCX, Port, Port);
fflush(sim_deb);
}
result = dev_table[Port & 0xff].routine(Port, 0, 0);
if ((cpu_dev.dctrl & IN_MSG) && sim_deb) {
fprintf(sim_deb, "CPU: " ADDRESS_FORMAT
" IN(port=0x%04x [%5d]) = 0x%04x [%5d]\n", PCX, Port, Port, result, result);
fflush(sim_deb);
}
return result;
}
/* the following tables precompute some common subexpressions
parityTable[i] 0..255 (number of 1's in i is odd) ? 0 : 4
incTable[i] 0..256! (i & 0xa8) | (((i & 0xff) == 0) << 6) | (((i & 0xf) == 0) << 4)
decTable[i] 0..255 (i & 0xa8) | (((i & 0xff) == 0) << 6) | (((i & 0xf) == 0xf) << 4) | 2
cbitsTable[i] 0..511 (i & 0x10) | ((i >> 8) & 1)
cbitsDup8Table[i] 0..511 (i & 0x10) | ((i >> 8) & 1) | ((i & 0xff) << 8) | (i & 0xa8) |
(((i & 0xff) == 0) << 6)
cbitsDup16Table[i] 0..511 (i & 0x10) | ((i >> 8) & 1) | (i & 0x28)
cbits2Table[i] 0..511 (i & 0x10) | ((i >> 8) & 1) | 2
rrcaTable[i] 0..255 ((i & 1) << 15) | ((i >> 1) << 8) | ((i >> 1) & 0x28) | (i & 1)
rraTable[i] 0..255 ((i >> 1) << 8) | ((i >> 1) & 0x28) | (i & 1)
addTable[i] 0..511 ((i & 0xff) << 8) | (i & 0xa8) | (((i & 0xff) == 0) << 6)
subTable[i] 0..255 ((i & 0xff) << 8) | (i & 0xa8) | (((i & 0xff) == 0) << 6) | 2
andTable[i] 0..255 (i << 8) | (i & 0xa8) | ((i == 0) << 6) | 0x10 | parityTable[i]
xororTable[i] 0..255 (i << 8) | (i & 0xa8) | ((i == 0) << 6) | parityTable[i]
rotateShiftTable[i] 0..255 (i & 0xa8) | (((i & 0xff) == 0) << 6) | parityTable[i & 0xff]
incZ80Table[i] 0..256! (i & 0xa8) | (((i & 0xff) == 0) << 6) |
(((i & 0xf) == 0) << 4) | ((i == 0x80) << 2)
decZ80Table[i] 0..255 (i & 0xa8) | (((i & 0xff) == 0) << 6) |
(((i & 0xf) == 0xf) << 4) | ((i == 0x7f) << 2) | 2
cbitsZ80Table[i] 0..511 (i & 0x10) | (((i >> 6) ^ (i >> 5)) & 4) | ((i >> 8) & 1)
cbitsZ80DupTable[i] 0..511 (i & 0x10) | (((i >> 6) ^ (i >> 5)) & 4) |
((i >> 8) & 1) | (i & 0xa8)
cbits2Z80Table[i] 0..511 (i & 0x10) | (((i >> 6) ^ (i >> 5)) & 4) | ((i >> 8) & 1) | 2
cbits2Z80DupTable[i] 0..511 (i & 0x10) | (((i >> 6) ^ (i >> 5)) & 4) | ((i >> 8) & 1) | 2 |
(i & 0xa8)
negTable[i] 0..255 (((i & 0x0f) != 0) << 4) | ((i == 0x80) << 2) | 2 | (i != 0)
rrdrldTable[i] 0..255 (i << 8) | (i & 0xa8) | (((i & 0xff) == 0) << 6) | parityTable[i]
cpTable[i] 0..255 (i & 0x80) | (((i & 0xff) == 0) << 6)
*/
/* parityTable[i] = (number of 1's in i is odd) ? 0 : 4, i = 0..255 */
static const uint8 parityTable[256] = {
4,0,0,4,0,4,4,0,0,4,4,0,4,0,0,4,
0,4,4,0,4,0,0,4,4,0,0,4,0,4,4,0,
0,4,4,0,4,0,0,4,4,0,0,4,0,4,4,0,
4,0,0,4,0,4,4,0,0,4,4,0,4,0,0,4,
0,4,4,0,4,0,0,4,4,0,0,4,0,4,4,0,
4,0,0,4,0,4,4,0,0,4,4,0,4,0,0,4,
4,0,0,4,0,4,4,0,0,4,4,0,4,0,0,4,
0,4,4,0,4,0,0,4,4,0,0,4,0,4,4,0,
0,4,4,0,4,0,0,4,4,0,0,4,0,4,4,0,
4,0,0,4,0,4,4,0,0,4,4,0,4,0,0,4,
4,0,0,4,0,4,4,0,0,4,4,0,4,0,0,4,
0,4,4,0,4,0,0,4,4,0,0,4,0,4,4,0,
4,0,0,4,0,4,4,0,0,4,4,0,4,0,0,4,
0,4,4,0,4,0,0,4,4,0,0,4,0,4,4,0,
0,4,4,0,4,0,0,4,4,0,0,4,0,4,4,0,
4,0,0,4,0,4,4,0,0,4,4,0,4,0,0,4,
};
/* incTable[i] = (i & 0xa8) | (((i & 0xff) == 0) << 6) | (((i & 0xf) == 0) << 4), i = 0..256 */
static const uint8 incTable[257] = {
80, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
16, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
48, 32, 32, 32, 32, 32, 32, 32, 40, 40, 40, 40, 40, 40, 40, 40,
48, 32, 32, 32, 32, 32, 32, 32, 40, 40, 40, 40, 40, 40, 40, 40,
16, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
16, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
48, 32, 32, 32, 32, 32, 32, 32, 40, 40, 40, 40, 40, 40, 40, 40,
48, 32, 32, 32, 32, 32, 32, 32, 40, 40, 40, 40, 40, 40, 40, 40,
144,128,128,128,128,128,128,128,136,136,136,136,136,136,136,136,
144,128,128,128,128,128,128,128,136,136,136,136,136,136,136,136,
176,160,160,160,160,160,160,160,168,168,168,168,168,168,168,168,
176,160,160,160,160,160,160,160,168,168,168,168,168,168,168,168,
144,128,128,128,128,128,128,128,136,136,136,136,136,136,136,136,
144,128,128,128,128,128,128,128,136,136,136,136,136,136,136,136,
176,160,160,160,160,160,160,160,168,168,168,168,168,168,168,168,
176,160,160,160,160,160,160,160,168,168,168,168,168,168,168,168, 80
};
/* decTable[i] = (i & 0xa8) | (((i & 0xff) == 0) << 6) | (((i & 0xf) == 0xf) << 4) | 2, i = 0..255 */
static const uint8 decTable[256] = {
66, 2, 2, 2, 2, 2, 2, 2, 10, 10, 10, 10, 10, 10, 10, 26,
2, 2, 2, 2, 2, 2, 2, 2, 10, 10, 10, 10, 10, 10, 10, 26,
34, 34, 34, 34, 34, 34, 34, 34, 42, 42, 42, 42, 42, 42, 42, 58,
34, 34, 34, 34, 34, 34, 34, 34, 42, 42, 42, 42, 42, 42, 42, 58,
2, 2, 2, 2, 2, 2, 2, 2, 10, 10, 10, 10, 10, 10, 10, 26,
2, 2, 2, 2, 2, 2, 2, 2, 10, 10, 10, 10, 10, 10, 10, 26,
34, 34, 34, 34, 34, 34, 34, 34, 42, 42, 42, 42, 42, 42, 42, 58,
34, 34, 34, 34, 34, 34, 34, 34, 42, 42, 42, 42, 42, 42, 42, 58,
130,130,130,130,130,130,130,130,138,138,138,138,138,138,138,154,
130,130,130,130,130,130,130,130,138,138,138,138,138,138,138,154,
162,162,162,162,162,162,162,162,170,170,170,170,170,170,170,186,
162,162,162,162,162,162,162,162,170,170,170,170,170,170,170,186,
130,130,130,130,130,130,130,130,138,138,138,138,138,138,138,154,
130,130,130,130,130,130,130,130,138,138,138,138,138,138,138,154,
162,162,162,162,162,162,162,162,170,170,170,170,170,170,170,186,
162,162,162,162,162,162,162,162,170,170,170,170,170,170,170,186,
};
/* cbitsTable[i] = (i & 0x10) | ((i >> 8) & 1), i = 0..511 */
static const uint8 cbitsTable[512] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
};
/* cbitsDup8Table[i] = (i & 0x10) | ((i >> 8) & 1) | ((i & 0xff) << 8) | (i & 0xa8) |
(((i & 0xff) == 0) << 6), i = 0..511 */
static const uint16 cbitsDup8Table[512] = {
0x0040,0x0100,0x0200,0x0300,0x0400,0x0500,0x0600,0x0700,
0x0808,0x0908,0x0a08,0x0b08,0x0c08,0x0d08,0x0e08,0x0f08,
0x1010,0x1110,0x1210,0x1310,0x1410,0x1510,0x1610,0x1710,
0x1818,0x1918,0x1a18,0x1b18,0x1c18,0x1d18,0x1e18,0x1f18,
0x2020,0x2120,0x2220,0x2320,0x2420,0x2520,0x2620,0x2720,
0x2828,0x2928,0x2a28,0x2b28,0x2c28,0x2d28,0x2e28,0x2f28,
0x3030,0x3130,0x3230,0x3330,0x3430,0x3530,0x3630,0x3730,
0x3838,0x3938,0x3a38,0x3b38,0x3c38,0x3d38,0x3e38,0x3f38,
0x4000,0x4100,0x4200,0x4300,0x4400,0x4500,0x4600,0x4700,
0x4808,0x4908,0x4a08,0x4b08,0x4c08,0x4d08,0x4e08,0x4f08,
0x5010,0x5110,0x5210,0x5310,0x5410,0x5510,0x5610,0x5710,
0x5818,0x5918,0x5a18,0x5b18,0x5c18,0x5d18,0x5e18,0x5f18,
0x6020,0x6120,0x6220,0x6320,0x6420,0x6520,0x6620,0x6720,
0x6828,0x6928,0x6a28,0x6b28,0x6c28,0x6d28,0x6e28,0x6f28,
0x7030,0x7130,0x7230,0x7330,0x7430,0x7530,0x7630,0x7730,
0x7838,0x7938,0x7a38,0x7b38,0x7c38,0x7d38,0x7e38,0x7f38,
0x8080,0x8180,0x8280,0x8380,0x8480,0x8580,0x8680,0x8780,
0x8888,0x8988,0x8a88,0x8b88,0x8c88,0x8d88,0x8e88,0x8f88,
0x9090,0x9190,0x9290,0x9390,0x9490,0x9590,0x9690,0x9790,
0x9898,0x9998,0x9a98,0x9b98,0x9c98,0x9d98,0x9e98,0x9f98,
0xa0a0,0xa1a0,0xa2a0,0xa3a0,0xa4a0,0xa5a0,0xa6a0,0xa7a0,
0xa8a8,0xa9a8,0xaaa8,0xaba8,0xaca8,0xada8,0xaea8,0xafa8,
0xb0b0,0xb1b0,0xb2b0,0xb3b0,0xb4b0,0xb5b0,0xb6b0,0xb7b0,
0xb8b8,0xb9b8,0xbab8,0xbbb8,0xbcb8,0xbdb8,0xbeb8,0xbfb8,
0xc080,0xc180,0xc280,0xc380,0xc480,0xc580,0xc680,0xc780,
0xc888,0xc988,0xca88,0xcb88,0xcc88,0xcd88,0xce88,0xcf88,
0xd090,0xd190,0xd290,0xd390,0xd490,0xd590,0xd690,0xd790,
0xd898,0xd998,0xda98,0xdb98,0xdc98,0xdd98,0xde98,0xdf98,
0xe0a0,0xe1a0,0xe2a0,0xe3a0,0xe4a0,0xe5a0,0xe6a0,0xe7a0,
0xe8a8,0xe9a8,0xeaa8,0xeba8,0xeca8,0xeda8,0xeea8,0xefa8,
0xf0b0,0xf1b0,0xf2b0,0xf3b0,0xf4b0,0xf5b0,0xf6b0,0xf7b0,
0xf8b8,0xf9b8,0xfab8,0xfbb8,0xfcb8,0xfdb8,0xfeb8,0xffb8,
0x0041,0x0101,0x0201,0x0301,0x0401,0x0501,0x0601,0x0701,
0x0809,0x0909,0x0a09,0x0b09,0x0c09,0x0d09,0x0e09,0x0f09,
0x1011,0x1111,0x1211,0x1311,0x1411,0x1511,0x1611,0x1711,
0x1819,0x1919,0x1a19,0x1b19,0x1c19,0x1d19,0x1e19,0x1f19,
0x2021,0x2121,0x2221,0x2321,0x2421,0x2521,0x2621,0x2721,
0x2829,0x2929,0x2a29,0x2b29,0x2c29,0x2d29,0x2e29,0x2f29,
0x3031,0x3131,0x3231,0x3331,0x3431,0x3531,0x3631,0x3731,
0x3839,0x3939,0x3a39,0x3b39,0x3c39,0x3d39,0x3e39,0x3f39,
0x4001,0x4101,0x4201,0x4301,0x4401,0x4501,0x4601,0x4701,
0x4809,0x4909,0x4a09,0x4b09,0x4c09,0x4d09,0x4e09,0x4f09,
0x5011,0x5111,0x5211,0x5311,0x5411,0x5511,0x5611,0x5711,
0x5819,0x5919,0x5a19,0x5b19,0x5c19,0x5d19,0x5e19,0x5f19,
0x6021,0x6121,0x6221,0x6321,0x6421,0x6521,0x6621,0x6721,
0x6829,0x6929,0x6a29,0x6b29,0x6c29,0x6d29,0x6e29,0x6f29,
0x7031,0x7131,0x7231,0x7331,0x7431,0x7531,0x7631,0x7731,
0x7839,0x7939,0x7a39,0x7b39,0x7c39,0x7d39,0x7e39,0x7f39,
0x8081,0x8181,0x8281,0x8381,0x8481,0x8581,0x8681,0x8781,
0x8889,0x8989,0x8a89,0x8b89,0x8c89,0x8d89,0x8e89,0x8f89,
0x9091,0x9191,0x9291,0x9391,0x9491,0x9591,0x9691,0x9791,
0x9899,0x9999,0x9a99,0x9b99,0x9c99,0x9d99,0x9e99,0x9f99,
0xa0a1,0xa1a1,0xa2a1,0xa3a1,0xa4a1,0xa5a1,0xa6a1,0xa7a1,
0xa8a9,0xa9a9,0xaaa9,0xaba9,0xaca9,0xada9,0xaea9,0xafa9,
0xb0b1,0xb1b1,0xb2b1,0xb3b1,0xb4b1,0xb5b1,0xb6b1,0xb7b1,
0xb8b9,0xb9b9,0xbab9,0xbbb9,0xbcb9,0xbdb9,0xbeb9,0xbfb9,
0xc081,0xc181,0xc281,0xc381,0xc481,0xc581,0xc681,0xc781,
0xc889,0xc989,0xca89,0xcb89,0xcc89,0xcd89,0xce89,0xcf89,
0xd091,0xd191,0xd291,0xd391,0xd491,0xd591,0xd691,0xd791,
0xd899,0xd999,0xda99,0xdb99,0xdc99,0xdd99,0xde99,0xdf99,
0xe0a1,0xe1a1,0xe2a1,0xe3a1,0xe4a1,0xe5a1,0xe6a1,0xe7a1,
0xe8a9,0xe9a9,0xeaa9,0xeba9,0xeca9,0xeda9,0xeea9,0xefa9,
0xf0b1,0xf1b1,0xf2b1,0xf3b1,0xf4b1,0xf5b1,0xf6b1,0xf7b1,
0xf8b9,0xf9b9,0xfab9,0xfbb9,0xfcb9,0xfdb9,0xfeb9,0xffb9,
};
/* cbitsDup16Table[i] = (i & 0x10) | ((i >> 8) & 1) | (i & 0x28), i = 0..511 */
static const uint8 cbitsDup16Table[512] = {
0, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
16,16,16,16,16,16,16,16,24,24,24,24,24,24,24,24,
32,32,32,32,32,32,32,32,40,40,40,40,40,40,40,40,
48,48,48,48,48,48,48,48,56,56,56,56,56,56,56,56,
0, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
16,16,16,16,16,16,16,16,24,24,24,24,24,24,24,24,
32,32,32,32,32,32,32,32,40,40,40,40,40,40,40,40,
48,48,48,48,48,48,48,48,56,56,56,56,56,56,56,56,
0, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
16,16,16,16,16,16,16,16,24,24,24,24,24,24,24,24,
32,32,32,32,32,32,32,32,40,40,40,40,40,40,40,40,
48,48,48,48,48,48,48,48,56,56,56,56,56,56,56,56,
0, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
16,16,16,16,16,16,16,16,24,24,24,24,24,24,24,24,
32,32,32,32,32,32,32,32,40,40,40,40,40,40,40,40,
48,48,48,48,48,48,48,48,56,56,56,56,56,56,56,56,
1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 9, 9,
17,17,17,17,17,17,17,17,25,25,25,25,25,25,25,25,
33,33,33,33,33,33,33,33,41,41,41,41,41,41,41,41,
49,49,49,49,49,49,49,49,57,57,57,57,57,57,57,57,
1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 9, 9,
17,17,17,17,17,17,17,17,25,25,25,25,25,25,25,25,
33,33,33,33,33,33,33,33,41,41,41,41,41,41,41,41,
49,49,49,49,49,49,49,49,57,57,57,57,57,57,57,57,
1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 9, 9,
17,17,17,17,17,17,17,17,25,25,25,25,25,25,25,25,
33,33,33,33,33,33,33,33,41,41,41,41,41,41,41,41,
49,49,49,49,49,49,49,49,57,57,57,57,57,57,57,57,
1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 9, 9,
17,17,17,17,17,17,17,17,25,25,25,25,25,25,25,25,
33,33,33,33,33,33,33,33,41,41,41,41,41,41,41,41,
49,49,49,49,49,49,49,49,57,57,57,57,57,57,57,57,
};
/* cbits2Table[i] = (i & 0x10) | ((i >> 8) & 1) | 2, i = 0..511 */
static const uint8 cbits2Table[512] = {
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
};
/* rrcaTable[i] = ((i & 1) << 15) | ((i >> 1) << 8) | ((i >> 1) & 0x28) | (i & 1), i = 0..255 */
static const uint16 rrcaTable[256] = {
0x0000,0x8001,0x0100,0x8101,0x0200,0x8201,0x0300,0x8301,
0x0400,0x8401,0x0500,0x8501,0x0600,0x8601,0x0700,0x8701,
0x0808,0x8809,0x0908,0x8909,0x0a08,0x8a09,0x0b08,0x8b09,
0x0c08,0x8c09,0x0d08,0x8d09,0x0e08,0x8e09,0x0f08,0x8f09,
0x1000,0x9001,0x1100,0x9101,0x1200,0x9201,0x1300,0x9301,
0x1400,0x9401,0x1500,0x9501,0x1600,0x9601,0x1700,0x9701,
0x1808,0x9809,0x1908,0x9909,0x1a08,0x9a09,0x1b08,0x9b09,
0x1c08,0x9c09,0x1d08,0x9d09,0x1e08,0x9e09,0x1f08,0x9f09,
0x2020,0xa021,0x2120,0xa121,0x2220,0xa221,0x2320,0xa321,
0x2420,0xa421,0x2520,0xa521,0x2620,0xa621,0x2720,0xa721,
0x2828,0xa829,0x2928,0xa929,0x2a28,0xaa29,0x2b28,0xab29,
0x2c28,0xac29,0x2d28,0xad29,0x2e28,0xae29,0x2f28,0xaf29,
0x3020,0xb021,0x3120,0xb121,0x3220,0xb221,0x3320,0xb321,
0x3420,0xb421,0x3520,0xb521,0x3620,0xb621,0x3720,0xb721,
0x3828,0xb829,0x3928,0xb929,0x3a28,0xba29,0x3b28,0xbb29,
0x3c28,0xbc29,0x3d28,0xbd29,0x3e28,0xbe29,0x3f28,0xbf29,
0x4000,0xc001,0x4100,0xc101,0x4200,0xc201,0x4300,0xc301,
0x4400,0xc401,0x4500,0xc501,0x4600,0xc601,0x4700,0xc701,
0x4808,0xc809,0x4908,0xc909,0x4a08,0xca09,0x4b08,0xcb09,
0x4c08,0xcc09,0x4d08,0xcd09,0x4e08,0xce09,0x4f08,0xcf09,
0x5000,0xd001,0x5100,0xd101,0x5200,0xd201,0x5300,0xd301,
0x5400,0xd401,0x5500,0xd501,0x5600,0xd601,0x5700,0xd701,
0x5808,0xd809,0x5908,0xd909,0x5a08,0xda09,0x5b08,0xdb09,
0x5c08,0xdc09,0x5d08,0xdd09,0x5e08,0xde09,0x5f08,0xdf09,
0x6020,0xe021,0x6120,0xe121,0x6220,0xe221,0x6320,0xe321,
0x6420,0xe421,0x6520,0xe521,0x6620,0xe621,0x6720,0xe721,
0x6828,0xe829,0x6928,0xe929,0x6a28,0xea29,0x6b28,0xeb29,
0x6c28,0xec29,0x6d28,0xed29,0x6e28,0xee29,0x6f28,0xef29,
0x7020,0xf021,0x7120,0xf121,0x7220,0xf221,0x7320,0xf321,
0x7420,0xf421,0x7520,0xf521,0x7620,0xf621,0x7720,0xf721,
0x7828,0xf829,0x7928,0xf929,0x7a28,0xfa29,0x7b28,0xfb29,
0x7c28,0xfc29,0x7d28,0xfd29,0x7e28,0xfe29,0x7f28,0xff29,
};
/* rraTable[i] = ((i >> 1) << 8) | ((i >> 1) & 0x28) | (i & 1), i = 0..255 */
static const uint16 rraTable[256] = {
0x0000,0x0001,0x0100,0x0101,0x0200,0x0201,0x0300,0x0301,
0x0400,0x0401,0x0500,0x0501,0x0600,0x0601,0x0700,0x0701,
0x0808,0x0809,0x0908,0x0909,0x0a08,0x0a09,0x0b08,0x0b09,
0x0c08,0x0c09,0x0d08,0x0d09,0x0e08,0x0e09,0x0f08,0x0f09,
0x1000,0x1001,0x1100,0x1101,0x1200,0x1201,0x1300,0x1301,
0x1400,0x1401,0x1500,0x1501,0x1600,0x1601,0x1700,0x1701,
0x1808,0x1809,0x1908,0x1909,0x1a08,0x1a09,0x1b08,0x1b09,
0x1c08,0x1c09,0x1d08,0x1d09,0x1e08,0x1e09,0x1f08,0x1f09,
0x2020,0x2021,0x2120,0x2121,0x2220,0x2221,0x2320,0x2321,
0x2420,0x2421,0x2520,0x2521,0x2620,0x2621,0x2720,0x2721,
0x2828,0x2829,0x2928,0x2929,0x2a28,0x2a29,0x2b28,0x2b29,
0x2c28,0x2c29,0x2d28,0x2d29,0x2e28,0x2e29,0x2f28,0x2f29,
0x3020,0x3021,0x3120,0x3121,0x3220,0x3221,0x3320,0x3321,
0x3420,0x3421,0x3520,0x3521,0x3620,0x3621,0x3720,0x3721,
0x3828,0x3829,0x3928,0x3929,0x3a28,0x3a29,0x3b28,0x3b29,
0x3c28,0x3c29,0x3d28,0x3d29,0x3e28,0x3e29,0x3f28,0x3f29,
0x4000,0x4001,0x4100,0x4101,0x4200,0x4201,0x4300,0x4301,
0x4400,0x4401,0x4500,0x4501,0x4600,0x4601,0x4700,0x4701,
0x4808,0x4809,0x4908,0x4909,0x4a08,0x4a09,0x4b08,0x4b09,
0x4c08,0x4c09,0x4d08,0x4d09,0x4e08,0x4e09,0x4f08,0x4f09,
0x5000,0x5001,0x5100,0x5101,0x5200,0x5201,0x5300,0x5301,
0x5400,0x5401,0x5500,0x5501,0x5600,0x5601,0x5700,0x5701,
0x5808,0x5809,0x5908,0x5909,0x5a08,0x5a09,0x5b08,0x5b09,
0x5c08,0x5c09,0x5d08,0x5d09,0x5e08,0x5e09,0x5f08,0x5f09,
0x6020,0x6021,0x6120,0x6121,0x6220,0x6221,0x6320,0x6321,
0x6420,0x6421,0x6520,0x6521,0x6620,0x6621,0x6720,0x6721,
0x6828,0x6829,0x6928,0x6929,0x6a28,0x6a29,0x6b28,0x6b29,
0x6c28,0x6c29,0x6d28,0x6d29,0x6e28,0x6e29,0x6f28,0x6f29,
0x7020,0x7021,0x7120,0x7121,0x7220,0x7221,0x7320,0x7321,
0x7420,0x7421,0x7520,0x7521,0x7620,0x7621,0x7720,0x7721,
0x7828,0x7829,0x7928,0x7929,0x7a28,0x7a29,0x7b28,0x7b29,
0x7c28,0x7c29,0x7d28,0x7d29,0x7e28,0x7e29,0x7f28,0x7f29,
};
/* addTable[i] = ((i & 0xff) << 8) | (i & 0xa8) | (((i & 0xff) == 0) << 6), i = 0..511 */
static const uint16 addTable[512] = {
0x0040,0x0100,0x0200,0x0300,0x0400,0x0500,0x0600,0x0700,
0x0808,0x0908,0x0a08,0x0b08,0x0c08,0x0d08,0x0e08,0x0f08,
0x1000,0x1100,0x1200,0x1300,0x1400,0x1500,0x1600,0x1700,
0x1808,0x1908,0x1a08,0x1b08,0x1c08,0x1d08,0x1e08,0x1f08,
0x2020,0x2120,0x2220,0x2320,0x2420,0x2520,0x2620,0x2720,
0x2828,0x2928,0x2a28,0x2b28,0x2c28,0x2d28,0x2e28,0x2f28,
0x3020,0x3120,0x3220,0x3320,0x3420,0x3520,0x3620,0x3720,
0x3828,0x3928,0x3a28,0x3b28,0x3c28,0x3d28,0x3e28,0x3f28,
0x4000,0x4100,0x4200,0x4300,0x4400,0x4500,0x4600,0x4700,
0x4808,0x4908,0x4a08,0x4b08,0x4c08,0x4d08,0x4e08,0x4f08,
0x5000,0x5100,0x5200,0x5300,0x5400,0x5500,0x5600,0x5700,
0x5808,0x5908,0x5a08,0x5b08,0x5c08,0x5d08,0x5e08,0x5f08,
0x6020,0x6120,0x6220,0x6320,0x6420,0x6520,0x6620,0x6720,
0x6828,0x6928,0x6a28,0x6b28,0x6c28,0x6d28,0x6e28,0x6f28,
0x7020,0x7120,0x7220,0x7320,0x7420,0x7520,0x7620,0x7720,
0x7828,0x7928,0x7a28,0x7b28,0x7c28,0x7d28,0x7e28,0x7f28,
0x8080,0x8180,0x8280,0x8380,0x8480,0x8580,0x8680,0x8780,
0x8888,0x8988,0x8a88,0x8b88,0x8c88,0x8d88,0x8e88,0x8f88,
0x9080,0x9180,0x9280,0x9380,0x9480,0x9580,0x9680,0x9780,
0x9888,0x9988,0x9a88,0x9b88,0x9c88,0x9d88,0x9e88,0x9f88,
0xa0a0,0xa1a0,0xa2a0,0xa3a0,0xa4a0,0xa5a0,0xa6a0,0xa7a0,
0xa8a8,0xa9a8,0xaaa8,0xaba8,0xaca8,0xada8,0xaea8,0xafa8,
0xb0a0,0xb1a0,0xb2a0,0xb3a0,0xb4a0,0xb5a0,0xb6a0,0xb7a0,
0xb8a8,0xb9a8,0xbaa8,0xbba8,0xbca8,0xbda8,0xbea8,0xbfa8,
0xc080,0xc180,0xc280,0xc380,0xc480,0xc580,0xc680,0xc780,
0xc888,0xc988,0xca88,0xcb88,0xcc88,0xcd88,0xce88,0xcf88,
0xd080,0xd180,0xd280,0xd380,0xd480,0xd580,0xd680,0xd780,
0xd888,0xd988,0xda88,0xdb88,0xdc88,0xdd88,0xde88,0xdf88,
0xe0a0,0xe1a0,0xe2a0,0xe3a0,0xe4a0,0xe5a0,0xe6a0,0xe7a0,
0xe8a8,0xe9a8,0xeaa8,0xeba8,0xeca8,0xeda8,0xeea8,0xefa8,
0xf0a0,0xf1a0,0xf2a0,0xf3a0,0xf4a0,0xf5a0,0xf6a0,0xf7a0,
0xf8a8,0xf9a8,0xfaa8,0xfba8,0xfca8,0xfda8,0xfea8,0xffa8,
0x0040,0x0100,0x0200,0x0300,0x0400,0x0500,0x0600,0x0700,
0x0808,0x0908,0x0a08,0x0b08,0x0c08,0x0d08,0x0e08,0x0f08,
0x1000,0x1100,0x1200,0x1300,0x1400,0x1500,0x1600,0x1700,
0x1808,0x1908,0x1a08,0x1b08,0x1c08,0x1d08,0x1e08,0x1f08,
0x2020,0x2120,0x2220,0x2320,0x2420,0x2520,0x2620,0x2720,
0x2828,0x2928,0x2a28,0x2b28,0x2c28,0x2d28,0x2e28,0x2f28,
0x3020,0x3120,0x3220,0x3320,0x3420,0x3520,0x3620,0x3720,
0x3828,0x3928,0x3a28,0x3b28,0x3c28,0x3d28,0x3e28,0x3f28,
0x4000,0x4100,0x4200,0x4300,0x4400,0x4500,0x4600,0x4700,
0x4808,0x4908,0x4a08,0x4b08,0x4c08,0x4d08,0x4e08,0x4f08,
0x5000,0x5100,0x5200,0x5300,0x5400,0x5500,0x5600,0x5700,
0x5808,0x5908,0x5a08,0x5b08,0x5c08,0x5d08,0x5e08,0x5f08,
0x6020,0x6120,0x6220,0x6320,0x6420,0x6520,0x6620,0x6720,
0x6828,0x6928,0x6a28,0x6b28,0x6c28,0x6d28,0x6e28,0x6f28,
0x7020,0x7120,0x7220,0x7320,0x7420,0x7520,0x7620,0x7720,
0x7828,0x7928,0x7a28,0x7b28,0x7c28,0x7d28,0x7e28,0x7f28,
0x8080,0x8180,0x8280,0x8380,0x8480,0x8580,0x8680,0x8780,
0x8888,0x8988,0x8a88,0x8b88,0x8c88,0x8d88,0x8e88,0x8f88,
0x9080,0x9180,0x9280,0x9380,0x9480,0x9580,0x9680,0x9780,
0x9888,0x9988,0x9a88,0x9b88,0x9c88,0x9d88,0x9e88,0x9f88,
0xa0a0,0xa1a0,0xa2a0,0xa3a0,0xa4a0,0xa5a0,0xa6a0,0xa7a0,
0xa8a8,0xa9a8,0xaaa8,0xaba8,0xaca8,0xada8,0xaea8,0xafa8,
0xb0a0,0xb1a0,0xb2a0,0xb3a0,0xb4a0,0xb5a0,0xb6a0,0xb7a0,
0xb8a8,0xb9a8,0xbaa8,0xbba8,0xbca8,0xbda8,0xbea8,0xbfa8,
0xc080,0xc180,0xc280,0xc380,0xc480,0xc580,0xc680,0xc780,
0xc888,0xc988,0xca88,0xcb88,0xcc88,0xcd88,0xce88,0xcf88,
0xd080,0xd180,0xd280,0xd380,0xd480,0xd580,0xd680,0xd780,
0xd888,0xd988,0xda88,0xdb88,0xdc88,0xdd88,0xde88,0xdf88,
0xe0a0,0xe1a0,0xe2a0,0xe3a0,0xe4a0,0xe5a0,0xe6a0,0xe7a0,
0xe8a8,0xe9a8,0xeaa8,0xeba8,0xeca8,0xeda8,0xeea8,0xefa8,
0xf0a0,0xf1a0,0xf2a0,0xf3a0,0xf4a0,0xf5a0,0xf6a0,0xf7a0,
0xf8a8,0xf9a8,0xfaa8,0xfba8,0xfca8,0xfda8,0xfea8,0xffa8,
};
/* subTable[i] = ((i & 0xff) << 8) | (i & 0xa8) | (((i & 0xff) == 0) << 6) | 2, i = 0..255 */
static const uint16 subTable[256] = {
0x0042,0x0102,0x0202,0x0302,0x0402,0x0502,0x0602,0x0702,
0x080a,0x090a,0x0a0a,0x0b0a,0x0c0a,0x0d0a,0x0e0a,0x0f0a,
0x1002,0x1102,0x1202,0x1302,0x1402,0x1502,0x1602,0x1702,
0x180a,0x190a,0x1a0a,0x1b0a,0x1c0a,0x1d0a,0x1e0a,0x1f0a,
0x2022,0x2122,0x2222,0x2322,0x2422,0x2522,0x2622,0x2722,
0x282a,0x292a,0x2a2a,0x2b2a,0x2c2a,0x2d2a,0x2e2a,0x2f2a,
0x3022,0x3122,0x3222,0x3322,0x3422,0x3522,0x3622,0x3722,
0x382a,0x392a,0x3a2a,0x3b2a,0x3c2a,0x3d2a,0x3e2a,0x3f2a,
0x4002,0x4102,0x4202,0x4302,0x4402,0x4502,0x4602,0x4702,
0x480a,0x490a,0x4a0a,0x4b0a,0x4c0a,0x4d0a,0x4e0a,0x4f0a,
0x5002,0x5102,0x5202,0x5302,0x5402,0x5502,0x5602,0x5702,
0x580a,0x590a,0x5a0a,0x5b0a,0x5c0a,0x5d0a,0x5e0a,0x5f0a,
0x6022,0x6122,0x6222,0x6322,0x6422,0x6522,0x6622,0x6722,
0x682a,0x692a,0x6a2a,0x6b2a,0x6c2a,0x6d2a,0x6e2a,0x6f2a,
0x7022,0x7122,0x7222,0x7322,0x7422,0x7522,0x7622,0x7722,
0x782a,0x792a,0x7a2a,0x7b2a,0x7c2a,0x7d2a,0x7e2a,0x7f2a,
0x8082,0x8182,0x8282,0x8382,0x8482,0x8582,0x8682,0x8782,
0x888a,0x898a,0x8a8a,0x8b8a,0x8c8a,0x8d8a,0x8e8a,0x8f8a,
0x9082,0x9182,0x9282,0x9382,0x9482,0x9582,0x9682,0x9782,
0x988a,0x998a,0x9a8a,0x9b8a,0x9c8a,0x9d8a,0x9e8a,0x9f8a,
0xa0a2,0xa1a2,0xa2a2,0xa3a2,0xa4a2,0xa5a2,0xa6a2,0xa7a2,
0xa8aa,0xa9aa,0xaaaa,0xabaa,0xacaa,0xadaa,0xaeaa,0xafaa,
0xb0a2,0xb1a2,0xb2a2,0xb3a2,0xb4a2,0xb5a2,0xb6a2,0xb7a2,
0xb8aa,0xb9aa,0xbaaa,0xbbaa,0xbcaa,0xbdaa,0xbeaa,0xbfaa,
0xc082,0xc182,0xc282,0xc382,0xc482,0xc582,0xc682,0xc782,
0xc88a,0xc98a,0xca8a,0xcb8a,0xcc8a,0xcd8a,0xce8a,0xcf8a,
0xd082,0xd182,0xd282,0xd382,0xd482,0xd582,0xd682,0xd782,
0xd88a,0xd98a,0xda8a,0xdb8a,0xdc8a,0xdd8a,0xde8a,0xdf8a,
0xe0a2,0xe1a2,0xe2a2,0xe3a2,0xe4a2,0xe5a2,0xe6a2,0xe7a2,
0xe8aa,0xe9aa,0xeaaa,0xebaa,0xecaa,0xedaa,0xeeaa,0xefaa,
0xf0a2,0xf1a2,0xf2a2,0xf3a2,0xf4a2,0xf5a2,0xf6a2,0xf7a2,
0xf8aa,0xf9aa,0xfaaa,0xfbaa,0xfcaa,0xfdaa,0xfeaa,0xffaa,
};
/* andTable[i] = (i << 8) | (i & 0xa8) | ((i == 0) << 6) | 0x10 | parityTable[i], i = 0..255 */
static const uint16 andTable[256] = {
0x0054,0x0110,0x0210,0x0314,0x0410,0x0514,0x0614,0x0710,
0x0818,0x091c,0x0a1c,0x0b18,0x0c1c,0x0d18,0x0e18,0x0f1c,
0x1010,0x1114,0x1214,0x1310,0x1414,0x1510,0x1610,0x1714,
0x181c,0x1918,0x1a18,0x1b1c,0x1c18,0x1d1c,0x1e1c,0x1f18,
0x2030,0x2134,0x2234,0x2330,0x2434,0x2530,0x2630,0x2734,
0x283c,0x2938,0x2a38,0x2b3c,0x2c38,0x2d3c,0x2e3c,0x2f38,
0x3034,0x3130,0x3230,0x3334,0x3430,0x3534,0x3634,0x3730,
0x3838,0x393c,0x3a3c,0x3b38,0x3c3c,0x3d38,0x3e38,0x3f3c,
0x4010,0x4114,0x4214,0x4310,0x4414,0x4510,0x4610,0x4714,
0x481c,0x4918,0x4a18,0x4b1c,0x4c18,0x4d1c,0x4e1c,0x4f18,
0x5014,0x5110,0x5210,0x5314,0x5410,0x5514,0x5614,0x5710,
0x5818,0x591c,0x5a1c,0x5b18,0x5c1c,0x5d18,0x5e18,0x5f1c,
0x6034,0x6130,0x6230,0x6334,0x6430,0x6534,0x6634,0x6730,
0x6838,0x693c,0x6a3c,0x6b38,0x6c3c,0x6d38,0x6e38,0x6f3c,
0x7030,0x7134,0x7234,0x7330,0x7434,0x7530,0x7630,0x7734,
0x783c,0x7938,0x7a38,0x7b3c,0x7c38,0x7d3c,0x7e3c,0x7f38,
0x8090,0x8194,0x8294,0x8390,0x8494,0x8590,0x8690,0x8794,
0x889c,0x8998,0x8a98,0x8b9c,0x8c98,0x8d9c,0x8e9c,0x8f98,
0x9094,0x9190,0x9290,0x9394,0x9490,0x9594,0x9694,0x9790,
0x9898,0x999c,0x9a9c,0x9b98,0x9c9c,0x9d98,0x9e98,0x9f9c,
0xa0b4,0xa1b0,0xa2b0,0xa3b4,0xa4b0,0xa5b4,0xa6b4,0xa7b0,
0xa8b8,0xa9bc,0xaabc,0xabb8,0xacbc,0xadb8,0xaeb8,0xafbc,
0xb0b0,0xb1b4,0xb2b4,0xb3b0,0xb4b4,0xb5b0,0xb6b0,0xb7b4,
0xb8bc,0xb9b8,0xbab8,0xbbbc,0xbcb8,0xbdbc,0xbebc,0xbfb8,
0xc094,0xc190,0xc290,0xc394,0xc490,0xc594,0xc694,0xc790,
0xc898,0xc99c,0xca9c,0xcb98,0xcc9c,0xcd98,0xce98,0xcf9c,
0xd090,0xd194,0xd294,0xd390,0xd494,0xd590,0xd690,0xd794,
0xd89c,0xd998,0xda98,0xdb9c,0xdc98,0xdd9c,0xde9c,0xdf98,
0xe0b0,0xe1b4,0xe2b4,0xe3b0,0xe4b4,0xe5b0,0xe6b0,0xe7b4,
0xe8bc,0xe9b8,0xeab8,0xebbc,0xecb8,0xedbc,0xeebc,0xefb8,
0xf0b4,0xf1b0,0xf2b0,0xf3b4,0xf4b0,0xf5b4,0xf6b4,0xf7b0,
0xf8b8,0xf9bc,0xfabc,0xfbb8,0xfcbc,0xfdb8,0xfeb8,0xffbc,
};
/* xororTable[i] = (i << 8) | (i & 0xa8) | ((i == 0) << 6) | parityTable[i], i = 0..255 */
static const uint16 xororTable[256] = {
0x0044,0x0100,0x0200,0x0304,0x0400,0x0504,0x0604,0x0700,
0x0808,0x090c,0x0a0c,0x0b08,0x0c0c,0x0d08,0x0e08,0x0f0c,
0x1000,0x1104,0x1204,0x1300,0x1404,0x1500,0x1600,0x1704,
0x180c,0x1908,0x1a08,0x1b0c,0x1c08,0x1d0c,0x1e0c,0x1f08,
0x2020,0x2124,0x2224,0x2320,0x2424,0x2520,0x2620,0x2724,
0x282c,0x2928,0x2a28,0x2b2c,0x2c28,0x2d2c,0x2e2c,0x2f28,
0x3024,0x3120,0x3220,0x3324,0x3420,0x3524,0x3624,0x3720,
0x3828,0x392c,0x3a2c,0x3b28,0x3c2c,0x3d28,0x3e28,0x3f2c,
0x4000,0x4104,0x4204,0x4300,0x4404,0x4500,0x4600,0x4704,
0x480c,0x4908,0x4a08,0x4b0c,0x4c08,0x4d0c,0x4e0c,0x4f08,
0x5004,0x5100,0x5200,0x5304,0x5400,0x5504,0x5604,0x5700,
0x5808,0x590c,0x5a0c,0x5b08,0x5c0c,0x5d08,0x5e08,0x5f0c,
0x6024,0x6120,0x6220,0x6324,0x6420,0x6524,0x6624,0x6720,
0x6828,0x692c,0x6a2c,0x6b28,0x6c2c,0x6d28,0x6e28,0x6f2c,
0x7020,0x7124,0x7224,0x7320,0x7424,0x7520,0x7620,0x7724,
0x782c,0x7928,0x7a28,0x7b2c,0x7c28,0x7d2c,0x7e2c,0x7f28,
0x8080,0x8184,0x8284,0x8380,0x8484,0x8580,0x8680,0x8784,
0x888c,0x8988,0x8a88,0x8b8c,0x8c88,0x8d8c,0x8e8c,0x8f88,
0x9084,0x9180,0x9280,0x9384,0x9480,0x9584,0x9684,0x9780,
0x9888,0x998c,0x9a8c,0x9b88,0x9c8c,0x9d88,0x9e88,0x9f8c,
0xa0a4,0xa1a0,0xa2a0,0xa3a4,0xa4a0,0xa5a4,0xa6a4,0xa7a0,
0xa8a8,0xa9ac,0xaaac,0xaba8,0xacac,0xada8,0xaea8,0xafac,
0xb0a0,0xb1a4,0xb2a4,0xb3a0,0xb4a4,0xb5a0,0xb6a0,0xb7a4,
0xb8ac,0xb9a8,0xbaa8,0xbbac,0xbca8,0xbdac,0xbeac,0xbfa8,
0xc084,0xc180,0xc280,0xc384,0xc480,0xc584,0xc684,0xc780,
0xc888,0xc98c,0xca8c,0xcb88,0xcc8c,0xcd88,0xce88,0xcf8c,
0xd080,0xd184,0xd284,0xd380,0xd484,0xd580,0xd680,0xd784,
0xd88c,0xd988,0xda88,0xdb8c,0xdc88,0xdd8c,0xde8c,0xdf88,
0xe0a0,0xe1a4,0xe2a4,0xe3a0,0xe4a4,0xe5a0,0xe6a0,0xe7a4,
0xe8ac,0xe9a8,0xeaa8,0xebac,0xeca8,0xedac,0xeeac,0xefa8,
0xf0a4,0xf1a0,0xf2a0,0xf3a4,0xf4a0,0xf5a4,0xf6a4,0xf7a0,
0xf8a8,0xf9ac,0xfaac,0xfba8,0xfcac,0xfda8,0xfea8,0xffac,
};
/* rotateShiftTable[i] = (i & 0xa8) | (((i & 0xff) == 0) << 6) | parityTable[i & 0xff], i = 0..255 */
static const uint8 rotateShiftTable[256] = {
68, 0, 0, 4, 0, 4, 4, 0, 8, 12, 12, 8, 12, 8, 8, 12,
0, 4, 4, 0, 4, 0, 0, 4, 12, 8, 8, 12, 8, 12, 12, 8,
32, 36, 36, 32, 36, 32, 32, 36, 44, 40, 40, 44, 40, 44, 44, 40,
36, 32, 32, 36, 32, 36, 36, 32, 40, 44, 44, 40, 44, 40, 40, 44,
0, 4, 4, 0, 4, 0, 0, 4, 12, 8, 8, 12, 8, 12, 12, 8,
4, 0, 0, 4, 0, 4, 4, 0, 8, 12, 12, 8, 12, 8, 8, 12,
36, 32, 32, 36, 32, 36, 36, 32, 40, 44, 44, 40, 44, 40, 40, 44,
32, 36, 36, 32, 36, 32, 32, 36, 44, 40, 40, 44, 40, 44, 44, 40,
128,132,132,128,132,128,128,132,140,136,136,140,136,140,140,136,
132,128,128,132,128,132,132,128,136,140,140,136,140,136,136,140,
164,160,160,164,160,164,164,160,168,172,172,168,172,168,168,172,
160,164,164,160,164,160,160,164,172,168,168,172,168,172,172,168,
132,128,128,132,128,132,132,128,136,140,140,136,140,136,136,140,
128,132,132,128,132,128,128,132,140,136,136,140,136,140,140,136,
160,164,164,160,164,160,160,164,172,168,168,172,168,172,172,168,
164,160,160,164,160,164,164,160,168,172,172,168,172,168,168,172,
};
/* incZ80Table[i] = (i & 0xa8) | (((i & 0xff) == 0) << 6) |
(((i & 0xf) == 0) << 4) | ((i == 0x80) << 2), i = 0..256 */
static const uint8 incZ80Table[257] = {
80, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
16, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
48, 32, 32, 32, 32, 32, 32, 32, 40, 40, 40, 40, 40, 40, 40, 40,
48, 32, 32, 32, 32, 32, 32, 32, 40, 40, 40, 40, 40, 40, 40, 40,
16, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
16, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
48, 32, 32, 32, 32, 32, 32, 32, 40, 40, 40, 40, 40, 40, 40, 40,
48, 32, 32, 32, 32, 32, 32, 32, 40, 40, 40, 40, 40, 40, 40, 40,
148,128,128,128,128,128,128,128,136,136,136,136,136,136,136,136,
144,128,128,128,128,128,128,128,136,136,136,136,136,136,136,136,
176,160,160,160,160,160,160,160,168,168,168,168,168,168,168,168,
176,160,160,160,160,160,160,160,168,168,168,168,168,168,168,168,
144,128,128,128,128,128,128,128,136,136,136,136,136,136,136,136,
144,128,128,128,128,128,128,128,136,136,136,136,136,136,136,136,
176,160,160,160,160,160,160,160,168,168,168,168,168,168,168,168,
176,160,160,160,160,160,160,160,168,168,168,168,168,168,168,168, 80,
};
/* decZ80Table[i] = (i & 0xa8) | (((i & 0xff) == 0) << 6) |
(((i & 0xf) == 0xf) << 4) | ((i == 0x7f) << 2) | 2, i = 0..255 */
static const uint8 decZ80Table[256] = {
66, 2, 2, 2, 2, 2, 2, 2, 10, 10, 10, 10, 10, 10, 10, 26,
2, 2, 2, 2, 2, 2, 2, 2, 10, 10, 10, 10, 10, 10, 10, 26,
34, 34, 34, 34, 34, 34, 34, 34, 42, 42, 42, 42, 42, 42, 42, 58,
34, 34, 34, 34, 34, 34, 34, 34, 42, 42, 42, 42, 42, 42, 42, 58,
2, 2, 2, 2, 2, 2, 2, 2, 10, 10, 10, 10, 10, 10, 10, 26,
2, 2, 2, 2, 2, 2, 2, 2, 10, 10, 10, 10, 10, 10, 10, 26,
34, 34, 34, 34, 34, 34, 34, 34, 42, 42, 42, 42, 42, 42, 42, 58,
34, 34, 34, 34, 34, 34, 34, 34, 42, 42, 42, 42, 42, 42, 42, 62,
130,130,130,130,130,130,130,130,138,138,138,138,138,138,138,154,
130,130,130,130,130,130,130,130,138,138,138,138,138,138,138,154,
162,162,162,162,162,162,162,162,170,170,170,170,170,170,170,186,
162,162,162,162,162,162,162,162,170,170,170,170,170,170,170,186,
130,130,130,130,130,130,130,130,138,138,138,138,138,138,138,154,
130,130,130,130,130,130,130,130,138,138,138,138,138,138,138,154,
162,162,162,162,162,162,162,162,170,170,170,170,170,170,170,186,
162,162,162,162,162,162,162,162,170,170,170,170,170,170,170,186,
};
/* cbitsZ80Table[i] = (i & 0x10) | (((i >> 6) ^ (i >> 5)) & 4) | ((i >> 8) & 1), i = 0..511 */
static const uint8 cbitsZ80Table[512] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
};
/* cbitsZ80DupTable[i] = (i & 0x10) | (((i >> 6) ^ (i >> 5)) & 4) |
((i >> 8) & 1) | (i & 0xa8), i = 0..511 */
static const uint8 cbitsZ80DupTable[512] = {
0, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
16, 16, 16, 16, 16, 16, 16, 16, 24, 24, 24, 24, 24, 24, 24, 24,
32, 32, 32, 32, 32, 32, 32, 32, 40, 40, 40, 40, 40, 40, 40, 40,
48, 48, 48, 48, 48, 48, 48, 48, 56, 56, 56, 56, 56, 56, 56, 56,
0, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8,
16, 16, 16, 16, 16, 16, 16, 16, 24, 24, 24, 24, 24, 24, 24, 24,
32, 32, 32, 32, 32, 32, 32, 32, 40, 40, 40, 40, 40, 40, 40, 40,
48, 48, 48, 48, 48, 48, 48, 48, 56, 56, 56, 56, 56, 56, 56, 56,
132,132,132,132,132,132,132,132,140,140,140,140,140,140,140,140,
148,148,148,148,148,148,148,148,156,156,156,156,156,156,156,156,
164,164,164,164,164,164,164,164,172,172,172,172,172,172,172,172,
180,180,180,180,180,180,180,180,188,188,188,188,188,188,188,188,
132,132,132,132,132,132,132,132,140,140,140,140,140,140,140,140,
148,148,148,148,148,148,148,148,156,156,156,156,156,156,156,156,
164,164,164,164,164,164,164,164,172,172,172,172,172,172,172,172,
180,180,180,180,180,180,180,180,188,188,188,188,188,188,188,188,
5, 5, 5, 5, 5, 5, 5, 5, 13, 13, 13, 13, 13, 13, 13, 13,
21, 21, 21, 21, 21, 21, 21, 21, 29, 29, 29, 29, 29, 29, 29, 29,
37, 37, 37, 37, 37, 37, 37, 37, 45, 45, 45, 45, 45, 45, 45, 45,
53, 53, 53, 53, 53, 53, 53, 53, 61, 61, 61, 61, 61, 61, 61, 61,
5, 5, 5, 5, 5, 5, 5, 5, 13, 13, 13, 13, 13, 13, 13, 13,
21, 21, 21, 21, 21, 21, 21, 21, 29, 29, 29, 29, 29, 29, 29, 29,
37, 37, 37, 37, 37, 37, 37, 37, 45, 45, 45, 45, 45, 45, 45, 45,
53, 53, 53, 53, 53, 53, 53, 53, 61, 61, 61, 61, 61, 61, 61, 61,
129,129,129,129,129,129,129,129,137,137,137,137,137,137,137,137,
145,145,145,145,145,145,145,145,153,153,153,153,153,153,153,153,
161,161,161,161,161,161,161,161,169,169,169,169,169,169,169,169,
177,177,177,177,177,177,177,177,185,185,185,185,185,185,185,185,
129,129,129,129,129,129,129,129,137,137,137,137,137,137,137,137,
145,145,145,145,145,145,145,145,153,153,153,153,153,153,153,153,
161,161,161,161,161,161,161,161,169,169,169,169,169,169,169,169,
177,177,177,177,177,177,177,177,185,185,185,185,185,185,185,185,
};
/* cbits2Z80Table[i] = (i & 0x10) | (((i >> 6) ^ (i >> 5)) & 4) | ((i >> 8) & 1) | 2, i = 0..511 */
static const uint8 cbits2Z80Table[512] = {
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
};
/* cbits2Z80DupTable[i] = (i & 0x10) | (((i >> 6) ^ (i >> 5)) & 4) | ((i >> 8) & 1) | 2 |
(i & 0xa8), i = 0..511 */
static const uint8 cbits2Z80DupTable[512] = {
2, 2, 2, 2, 2, 2, 2, 2, 10, 10, 10, 10, 10, 10, 10, 10,
18, 18, 18, 18, 18, 18, 18, 18, 26, 26, 26, 26, 26, 26, 26, 26,
34, 34, 34, 34, 34, 34, 34, 34, 42, 42, 42, 42, 42, 42, 42, 42,
50, 50, 50, 50, 50, 50, 50, 50, 58, 58, 58, 58, 58, 58, 58, 58,
2, 2, 2, 2, 2, 2, 2, 2, 10, 10, 10, 10, 10, 10, 10, 10,
18, 18, 18, 18, 18, 18, 18, 18, 26, 26, 26, 26, 26, 26, 26, 26,
34, 34, 34, 34, 34, 34, 34, 34, 42, 42, 42, 42, 42, 42, 42, 42,
50, 50, 50, 50, 50, 50, 50, 50, 58, 58, 58, 58, 58, 58, 58, 58,
134,134,134,134,134,134,134,134,142,142,142,142,142,142,142,142,
150,150,150,150,150,150,150,150,158,158,158,158,158,158,158,158,
166,166,166,166,166,166,166,166,174,174,174,174,174,174,174,174,
182,182,182,182,182,182,182,182,190,190,190,190,190,190,190,190,
134,134,134,134,134,134,134,134,142,142,142,142,142,142,142,142,
150,150,150,150,150,150,150,150,158,158,158,158,158,158,158,158,
166,166,166,166,166,166,166,166,174,174,174,174,174,174,174,174,
182,182,182,182,182,182,182,182,190,190,190,190,190,190,190,190,
7, 7, 7, 7, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15,
23, 23, 23, 23, 23, 23, 23, 23, 31, 31, 31, 31, 31, 31, 31, 31,
39, 39, 39, 39, 39, 39, 39, 39, 47, 47, 47, 47, 47, 47, 47, 47,
55, 55, 55, 55, 55, 55, 55, 55, 63, 63, 63, 63, 63, 63, 63, 63,
7, 7, 7, 7, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15,
23, 23, 23, 23, 23, 23, 23, 23, 31, 31, 31, 31, 31, 31, 31, 31,
39, 39, 39, 39, 39, 39, 39, 39, 47, 47, 47, 47, 47, 47, 47, 47,
55, 55, 55, 55, 55, 55, 55, 55, 63, 63, 63, 63, 63, 63, 63, 63,
131,131,131,131,131,131,131,131,139,139,139,139,139,139,139,139,
147,147,147,147,147,147,147,147,155,155,155,155,155,155,155,155,
163,163,163,163,163,163,163,163,171,171,171,171,171,171,171,171,
179,179,179,179,179,179,179,179,187,187,187,187,187,187,187,187,
131,131,131,131,131,131,131,131,139,139,139,139,139,139,139,139,
147,147,147,147,147,147,147,147,155,155,155,155,155,155,155,155,
163,163,163,163,163,163,163,163,171,171,171,171,171,171,171,171,
179,179,179,179,179,179,179,179,187,187,187,187,187,187,187,187,
};
/* negTable[i] = (((i & 0x0f) != 0) << 4) | ((i == 0x80) << 2) | 2 | (i != 0), i = 0..255 */
static const uint8 negTable[256] = {
2,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
7,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
3,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
};
/* rrdrldTable[i] = (i << 8) | (i & 0xa8) | (((i & 0xff) == 0) << 6) | parityTable[i], i = 0..255 */
static const uint16 rrdrldTable[256] = {
0x0044,0x0100,0x0200,0x0304,0x0400,0x0504,0x0604,0x0700,
0x0808,0x090c,0x0a0c,0x0b08,0x0c0c,0x0d08,0x0e08,0x0f0c,
0x1000,0x1104,0x1204,0x1300,0x1404,0x1500,0x1600,0x1704,
0x180c,0x1908,0x1a08,0x1b0c,0x1c08,0x1d0c,0x1e0c,0x1f08,
0x2020,0x2124,0x2224,0x2320,0x2424,0x2520,0x2620,0x2724,
0x282c,0x2928,0x2a28,0x2b2c,0x2c28,0x2d2c,0x2e2c,0x2f28,
0x3024,0x3120,0x3220,0x3324,0x3420,0x3524,0x3624,0x3720,
0x3828,0x392c,0x3a2c,0x3b28,0x3c2c,0x3d28,0x3e28,0x3f2c,
0x4000,0x4104,0x4204,0x4300,0x4404,0x4500,0x4600,0x4704,
0x480c,0x4908,0x4a08,0x4b0c,0x4c08,0x4d0c,0x4e0c,0x4f08,
0x5004,0x5100,0x5200,0x5304,0x5400,0x5504,0x5604,0x5700,
0x5808,0x590c,0x5a0c,0x5b08,0x5c0c,0x5d08,0x5e08,0x5f0c,
0x6024,0x6120,0x6220,0x6324,0x6420,0x6524,0x6624,0x6720,
0x6828,0x692c,0x6a2c,0x6b28,0x6c2c,0x6d28,0x6e28,0x6f2c,
0x7020,0x7124,0x7224,0x7320,0x7424,0x7520,0x7620,0x7724,
0x782c,0x7928,0x7a28,0x7b2c,0x7c28,0x7d2c,0x7e2c,0x7f28,
0x8080,0x8184,0x8284,0x8380,0x8484,0x8580,0x8680,0x8784,
0x888c,0x8988,0x8a88,0x8b8c,0x8c88,0x8d8c,0x8e8c,0x8f88,
0x9084,0x9180,0x9280,0x9384,0x9480,0x9584,0x9684,0x9780,
0x9888,0x998c,0x9a8c,0x9b88,0x9c8c,0x9d88,0x9e88,0x9f8c,
0xa0a4,0xa1a0,0xa2a0,0xa3a4,0xa4a0,0xa5a4,0xa6a4,0xa7a0,
0xa8a8,0xa9ac,0xaaac,0xaba8,0xacac,0xada8,0xaea8,0xafac,
0xb0a0,0xb1a4,0xb2a4,0xb3a0,0xb4a4,0xb5a0,0xb6a0,0xb7a4,
0xb8ac,0xb9a8,0xbaa8,0xbbac,0xbca8,0xbdac,0xbeac,0xbfa8,
0xc084,0xc180,0xc280,0xc384,0xc480,0xc584,0xc684,0xc780,
0xc888,0xc98c,0xca8c,0xcb88,0xcc8c,0xcd88,0xce88,0xcf8c,
0xd080,0xd184,0xd284,0xd380,0xd484,0xd580,0xd680,0xd784,
0xd88c,0xd988,0xda88,0xdb8c,0xdc88,0xdd8c,0xde8c,0xdf88,
0xe0a0,0xe1a4,0xe2a4,0xe3a0,0xe4a4,0xe5a0,0xe6a0,0xe7a4,
0xe8ac,0xe9a8,0xeaa8,0xebac,0xeca8,0xedac,0xeeac,0xefa8,
0xf0a4,0xf1a0,0xf2a0,0xf3a4,0xf4a0,0xf5a4,0xf6a4,0xf7a0,
0xf8a8,0xf9ac,0xfaac,0xfba8,0xfcac,0xfda8,0xfea8,0xffac,
};
/* cpTable[i] = (i & 0x80) | (((i & 0xff) == 0) << 6), i = 0..255 */
static const uint8 cpTable[256] = {
64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,
128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,
128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,
128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,
128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,
128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,
128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,
128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,
};
/* remove comments to generate table contents and add a call to
altairz80_print_tables in the altairz80_init
static void altairz80_print_tables(void) {
*/
/* parityTable */
/*
uint32 i, v;
for (i = 0; i < 256; i++) {
v = ((i & 1) + ((i & 2) >> 1) + ((i & 4) >> 2) + ((i & 8) >> 3) +
((i & 16) >> 4) + ((i & 32) >> 5) + ((i & 64) >> 6) + ((i & 128) >> 7)) % 2 ? 0 : 4;
printf("%1d,", v);
if ( ((i+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* incTable */
/*
uint32 temp, v;
for (temp = 0; temp <= 256; temp++) {
v = (temp & 0xa8) | (((temp & 0xff) == 0) << 6) | (((temp & 0xf) == 0) << 4);
printf("%3d,", v);
if ( ((temp+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* decTable */
/*
uint32 temp, v;
for (temp = 0; temp < 256; temp++) {
v = (temp & 0xa8) | (((temp & 0xff) == 0) << 6) | (((temp & 0xf) == 0xf) << 4) | 2;
printf("%3d,", v);
if ( ((temp+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* cbitsTable */
/*
uint32 cbits, v;
for (cbits = 0; cbits < 512; cbits++) {
v = (cbits & 0x10) | ((cbits >> 8) & 1);
printf("%2d,", v);
if ( ((cbits+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* cbitsDup8Table */
/*
uint32 cbits, v;
for (cbits = 0; cbits < 512; cbits++) {
v = (cbits & 0x10) | ((cbits >> 8) & 1) | ((cbits & 0xff) << 8) | (cbits & 0xa8) | (((cbits & 0xff) == 0) << 6);
printf("0x%04x,", v);
if ( ((cbits+1) & 0x7) == 0) {
printf("\n");
}
}
*/
/* cbitsDup16Table */
/*
uint32 cbits, v;
for (cbits = 0; cbits < 512; cbits++) {
v = (cbits & 0x10) | ((cbits >> 8) & 1) | (cbits & 0x28);
printf("%2d,", v);
if ( ((cbits+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* cbits2Table */
/*
uint32 cbits, v;
for (cbits = 0; cbits < 512; cbits++) {
v = (cbits & 0x10) | ((cbits >> 8) & 1) | 2;
printf("%2d,", v);
if ( ((cbits+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* rrcaTable */
/*
uint32 temp, sum, v;
for (temp = 0; temp < 256; temp++) {
sum = temp >> 1;
v = ((temp & 1) << 15) | (sum << 8) | (sum & 0x28) | (temp & 1);
printf("0x%04x,", v);
if ( ((temp+1) & 0x7) == 0) {
printf("\n");
}
}
*/
/* rraTable */
/*
uint32 temp, sum, v;
for (temp = 0; temp < 256; temp++) {
sum = temp >> 1;
v = (sum << 8) | (sum & 0x28) | (temp & 1);
printf("0x%04x,", v);
if ( ((temp+1) & 0x7) == 0) {
printf("\n");
}
}
*/
/* addTable */
/*
uint32 sum, v;
for (sum = 0; sum < 512; sum++) {
v = ((sum & 0xff) << 8) | (sum & 0xa8) | (((sum & 0xff) == 0) << 6);
printf("0x%04x,", v);
if ( ((sum+1) & 0x7) == 0) {
printf("\n");
}
}
*/
/* subTable */
/*
uint32 sum, v;
for (sum = 0; sum < 256; sum++) {
v = ((sum & 0xff) << 8) | (sum & 0xa8) | (((sum & 0xff) == 0) << 6) | 2;
printf("0x%04x,", v);
if ( ((sum+1) & 0x7) == 0) {
printf("\n");
}
}
*/
/* andTable */
/*
uint32 sum, v;
for (sum = 0; sum < 256; sum++) {
v = (sum << 8) | (sum & 0xa8) | ((sum == 0) << 6) | 0x10 | parityTable[sum];
printf("0x%04x,", v);
if ( ((sum+1) & 0x7) == 0) {
printf("\n");
}
}
*/
/* xororTable */
/*
uint32 sum, v;
for (sum = 0; sum < 256; sum++) {
v = (sum << 8) | (sum & 0xa8) | ((sum == 0) << 6) | parityTable[sum];
printf("0x%04x,", v);
if ( ((sum+1) & 0x7) == 0) {
printf("\n");
}
}
*/
/* rotateShiftTable */
/*
uint32 temp, v;
for (temp = 0; temp < 256; temp++) {
v = (temp & 0xa8) | (((temp & 0xff) == 0) << 6) | PARITY(temp);
printf("%3d,", v);
if ( ((temp+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* incZ80Table */
/*
uint32 temp, v;
for (temp = 0; temp < 256; temp++) {
v = (temp & 0xa8) | (((temp & 0xff) == 0) << 6) |
(((temp & 0xf) == 0) << 4) | ((temp == 0x80) << 2);
printf("%3d,", v);
if ( ((temp+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* decZ80Table */
/*
uint32 temp, v;
for (temp = 0; temp < 256; temp++) {
v = (temp & 0xa8) | (((temp & 0xff) == 0) << 6) |
(((temp & 0xf) == 0xf) << 4) | ((temp == 0x7f) << 2) | 2;
printf("%3d,", v);
if ( ((temp+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* cbitsZ80Table */
/*
uint32 cbits, v;
for (cbits = 0; cbits < 512; cbits++) {
v = (cbits & 0x10) | (((cbits >> 6) ^ (cbits >> 5)) & 4) |
((cbits >> 8) & 1);
printf("%2d,", v);
if ( ((cbits+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* cbitsZ80DupTable */
/*
uint32 cbits, v;
for (cbits = 0; cbits < 512; cbits++) {
v = (cbits & 0x10) | (((cbits >> 6) ^ (cbits >> 5)) & 4) |
((cbits >> 8) & 1) | (cbits & 0xa8);
printf("%3d,", v);
if ( ((cbits+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* cbits2Z80Table */
/*
uint32 cbits, v;
for (cbits = 0; cbits < 512; cbits++) {
v = (((cbits >> 6) ^ (cbits >> 5)) & 4) | (cbits & 0x10) | 2 | ((cbits >> 8) & 1);
printf("%2d,", v);
if ( ((cbits+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* cbits2Z80DupTable */
/*
uint32 cbits, v;
for (cbits = 0; cbits < 512; cbits++) {
v = (((cbits >> 6) ^ (cbits >> 5)) & 4) | (cbits & 0x10) | 2 | ((cbits >> 8) & 1) |
(cbits & 0xa8);
printf("%3d,", v);
if ( ((cbits+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* negTable */
/*
uint32 temp, v;
for (temp = 0; temp < 256; temp++) {
v = (((temp & 0x0f) != 0) << 4) | ((temp == 0x80) << 2) | 2 | (temp != 0);
printf("%2d,", v);
if ( ((temp+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* rrdrldTable */
/*
uint32 acu, v;
for (acu = 0; acu < 256; acu++) {
v = (acu << 8) | (acu & 0xa8) | (((acu & 0xff) == 0) << 6) | parityTable[acu];
printf("0x%04x,", v);
if ( ((acu+1) & 0x7) == 0) {
printf("\n");
}
}
*/
/* cpTable */
/*
uint32 sum, v;
for (sum = 0; sum < 256; sum++) {
v = (sum & 0x80) | (((sum & 0xff) == 0) << 6);
printf("%3d,", v);
if ( ((sum+1) & 0xf) == 0) {
printf("\n");
}
}
*/
/* remove comments to generate table contents
}
*/
/* Memory management */
#define LOG2PAGESIZE 8
#define PAGESIZE (1 << LOG2PAGESIZE)
static uint8 M[MAXMEMORY]; /* RAM which is present */
struct mdev { /* Structure to describe a 2^LOG2PAGESIZE byte page of address space */
/* There are four cases
isRAM isEmpty routine code
TRUE FALSE NULL W page is random access memory (RAM)
FALSE TRUE NULL U no memory at this location
FALSE FALSE NULL R page is read only memory (ROM)
FALSE FALSE not NULL M page is mapped to memory mapped I/O routine
other combinations are undefined!
*/
uint32 isRAM;
uint32 isEmpty;
int32 (*routine)(const int32, const int32, const int32);
};
typedef struct mdev MDEV;
static MDEV ROM_PAGE = {FALSE, FALSE, NULL}; /* this makes a page ROM */
static MDEV RAM_PAGE = {TRUE, FALSE, NULL}; /* this makes a page RAM */
static MDEV EMPTY_PAGE = {FALSE, TRUE, NULL}; /* this is non-existing memory */
static MDEV mmu_table[MAXMEMORY >> LOG2PAGESIZE];
/* Memory and I/O Resource Mapping and Unmapping routine. */
uint32 sim_map_resource(uint32 baseaddr, uint32 size, uint32 resource_type,
int32 (*routine)(const int32, const int32, const int32), uint8 unmap) {
uint32 page, i, addr;
if (resource_type == RESOURCE_TYPE_MEMORY) {
for (i = 0; i < (size >> LOG2PAGESIZE); i++) {
addr = (baseaddr & 0xfff00) + (i << LOG2PAGESIZE);
if ((cpu_unit.flags & UNIT_CPU_BANKED) && (addr < common))
addr |= bankSelect << MAXBANKSIZELOG2;
page = addr >> LOG2PAGESIZE;
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
printf("%s memory 0x%05x, handler=%p\n", unmap ? "Unmapping" : " Mapping",
addr, routine);
if (unmap) {
if (mmu_table[page].routine == routine) { /* unmap only if it was mapped */
if (MEMORYSIZE < MAXBANKSIZE)
if (addr < MEMORYSIZE)
mmu_table[page] = RAM_PAGE;
else
mmu_table[page] = EMPTY_PAGE;
else
mmu_table[page] = RAM_PAGE;
}
}
else {
mmu_table[page] = ROM_PAGE;
mmu_table[page].routine = routine;
}
}
} else if (resource_type == RESOURCE_TYPE_IO) {
for (i = baseaddr; i < baseaddr + size; i++)
if (unmap) {
if (dev_table[i & 0xff].routine == routine) {
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
printf("Unmapping IO %04x, handler=%p\n", i, routine);
dev_table[i & 0xff].routine = &nulldev;
}
}
else {
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
printf(" Mapping IO %04x, handler=%p\n", i, routine);
dev_table[i & 0xff].routine = routine;
}
} else {
printf("%s: cannot map unknown resource type %d\n", __FUNCTION__, resource_type);
return -1;
}
return 0;
}
static void PutBYTE(register uint32 Addr, const register uint32 Value) {
MDEV m;
Addr &= ADDRMASK; /* registers are NOT guaranteed to be always 16-bit values */
if ((cpu_unit.flags & UNIT_CPU_BANKED) && (Addr < common))
Addr |= bankSelect << MAXBANKSIZELOG2;
m = mmu_table[Addr >> LOG2PAGESIZE];
if (m.isRAM)
M[Addr] = Value;
else if (m.routine)
m.routine(Addr, 1, Value);
else if (cpu_unit.flags & UNIT_CPU_VERBOSE) {
if (m.isEmpty)
printf("CPU: " ADDRESS_FORMAT " Attempt to write to non existing memory " ADDRESS_FORMAT "." NLP, PCX, Addr);
else
printf("CPU: " ADDRESS_FORMAT " Attempt to write to ROM " ADDRESS_FORMAT "." NLP, PCX, Addr);
}
}
void PutBYTEExtended(register uint32 Addr, const register uint32 Value) {
MDEV m;
Addr &= ADDRMASKEXTENDED;
m = mmu_table[Addr >> LOG2PAGESIZE];
if (m.isRAM)
M[Addr] = Value;
else if (m.routine)
m.routine(Addr, 1, Value);
else if (cpu_unit.flags & UNIT_CPU_VERBOSE) {
if (m.isEmpty)
printf("CPU: " ADDRESS_FORMAT " Attempt to write to non existing memory " ADDRESS_FORMAT "." NLP, PCX, Addr);
else
printf("CPU: " ADDRESS_FORMAT " Attempt to write to ROM " ADDRESS_FORMAT "." NLP, PCX, Addr);
}
}
static void PutWORD(register uint32 Addr, const register uint32 Value) {
PutBYTE(Addr, Value);
PutBYTE(Addr + 1, Value >> 8);
}
static uint32 GetBYTE(register uint32 Addr) {
MDEV m;
Addr &= ADDRMASK; /* registers are NOT guaranteed to be always 16-bit values */
if ((cpu_unit.flags & UNIT_CPU_BANKED) && (Addr < common))
Addr |= bankSelect << MAXBANKSIZELOG2;
m = mmu_table[Addr >> LOG2PAGESIZE];
if (m.isRAM)
return M[Addr]; /* RAM */
if (m.routine)
return m.routine(Addr, 0, 0); /* memory mapped I/O */
if (m.isEmpty) {
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
printf("CPU: " ADDRESS_FORMAT " Attempt to read from non existing memory " ADDRESS_FORMAT "." NLP, PCX, Addr);
return 0xff;
}
return M[Addr]; /* ROM */
}
uint32 GetBYTEExtended(register uint32 Addr) {
MDEV m;
Addr &= ADDRMASKEXTENDED;
m = mmu_table[Addr >> LOG2PAGESIZE];
if (m.isRAM)
return M[Addr];
if (m.routine)
return m.routine(Addr, 0, 0);
if (m.isEmpty) {
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
printf("CPU: " ADDRESS_FORMAT " Attempt to read from non existing memory " ADDRESS_FORMAT "." NLP, PCX, Addr);
return 0xff;
}
return M[Addr];
}
int32 getBankSelect(void) {
return bankSelect;
}
void setBankSelect(const int32 b) {
bankSelect = b;
}
uint32 getCommon(void) {
return common;
}
/* memory access during a simulation */
uint8 GetBYTEWrapper(const uint32 Addr) {
if (chiptype == CHIP_TYPE_8086)
return GetBYTEExtended(Addr);
else if (cpu_unit.flags & UNIT_CPU_MMU)
return GetBYTE(Addr);
else
return MOPT[Addr & ADDRMASK];
}
/* memory access during a simulation */
void PutBYTEWrapper(const uint32 Addr, const uint32 Value) {
if (chiptype == CHIP_TYPE_8086)
PutBYTEExtended(Addr, Value);
else if (cpu_unit.flags & UNIT_CPU_MMU)
PutBYTE(Addr, Value);
else
MOPT[Addr & ADDRMASK] = Value & 0xff;
}
/* DMA memory access during a simulation, suggested by Tony Nicholson */
uint8 GetByteDMA(const uint32 Addr) {
if ((chiptype == CHIP_TYPE_8086) || (cpu_unit.flags & UNIT_CPU_MMU))
return GetBYTEExtended(Addr);
else
return MOPT[Addr & ADDRMASK];
}
void PutByteDMA(const uint32 Addr, const uint32 Value) {
if ((chiptype == CHIP_TYPE_8086) || (cpu_unit.flags & UNIT_CPU_MMU))
PutBYTEExtended(Addr, Value);
else
MOPT[Addr & ADDRMASK] = Value & 0xff;
}
#define RAM_PP(Addr) GetBYTE(Addr++)
#define RAM_MM(Addr) GetBYTE(Addr--)
#define GET_WORD(Addr) (GetBYTE(Addr) | (GetBYTE(Addr + 1) << 8))
#define PUT_BYTE_PP(a,v) PutBYTE(a++, v)
#define PUT_BYTE_MM(a,v) PutBYTE(a--, v)
#define MM_PUT_BYTE(a,v) PutBYTE(--a, v)
#define MASK_BRK (TRUE + 1)
/* this is a modified version of sim_brk_test with two differences:
1) is does not set sim_brk_pend to FALSE (this is left to the instruction decode)
2) it returns MASK_BRK if a breakpoint is found but should be ignored
*/
static int32 sim_brk_lookup (const t_addr loc, const int32 btyp) {
extern t_bool sim_brk_pend[SIM_BKPT_N_SPC];
extern t_addr sim_brk_ploc[SIM_BKPT_N_SPC];
extern char *sim_brk_act;
BRKTAB *bp;
if ((bp = sim_brk_fnd (loc)) && /* entry in table? */
(btyp & bp -> typ) && /* type match? */
(!sim_brk_pend[0] || (loc != sim_brk_ploc[0])) && /* new location? */
(--(bp -> cnt) <= 0)) { /* count reach 0? */
bp -> cnt = 0; /* reset count */
sim_brk_ploc[0] = loc; /* save location */
sim_brk_act = bp -> act; /* set up actions */
sim_brk_pend[0] = TRUE; /* don't do twice */
return TRUE;
}
return (sim_brk_pend[0] && (loc == sim_brk_ploc[0])) ? MASK_BRK : FALSE;
}
#define PUSH(x) { \
MM_PUT_BYTE(SP, (x) >> 8); \
MM_PUT_BYTE(SP, x); \
}
#define CHECK_BREAK_BYTE(a) \
if (sim_brk_summ) { \
if (sim_brk_test((a) & 0xffff, SWMASK('M'))) { \
reason = STOP_MEM; \
prepareMemoryAccessMessage((a) & 0xffff); \
goto end_decode; \
} \
sim_brk_pend[0] = FALSE; \
}
#define CHECK_BREAK_TWO_BYTES_EXTENDED(a1, a2, iCode) \
if (sim_brk_summ) { \
int32 brl = sim_brk_lookup((a1) & 0xffff, SWMASK('M')); \
if ((brl == TRUE) || (brl == FALSE) && (sim_brk_lookup((a2) \
& 0xffff, SWMASK('M')) == TRUE)) { \
reason = STOP_MEM; \
prepareMemoryAccessMessage((brl ? (a1):(a2)) & 0xffff); \
iCode; \
goto end_decode; \
} \
sim_brk_pend[0] = FALSE; \
}
#define CHECK_BREAK_TWO_BYTES(a1, a2) CHECK_BREAK_TWO_BYTES_EXTENDED(a1, a2,;)
#define CHECK_BREAK_WORD(a) CHECK_BREAK_TWO_BYTES(a, (a + 1))
#define HALTINSTRUCTION 0x76
/* Macros for the IN/OUT instructions INI/INIR/IND/INDR/OUTI/OTIR/OUTD/OTDR
Pre condition
temp == value of register B at entry of the instruction
acu == value of transferred byte (IN or OUT)
Post condition
F is set correctly
Use INOUTFLAGS_ZERO(x) for INIR/INDR/OTIR/OTDR where
x == (C + 1) & 0xff for INIR
x == L for OTIR and OTDR
x == (C - 1) & 0xff for INDR
Use INOUTFLAGS_NONZERO(x) for INI/IND/OUTI/OUTD where
x == (C + 1) & 0xff for INI
x == L for OUTI and OUTD
x == (C - 1) & 0xff for IND
*/
#define INOUTFLAGS(syxz, x) \
AF = (AF & 0xff00) | (syxz) | /* SF, YF, XF, ZF */ \
((acu & 0x80) >> 6) | /* NF */ \
((acu + (x)) > 0xff ? (FLAG_C | FLAG_H) : 0) | /* CF, HF */ \
parityTable[((acu + (x)) & 7) ^ temp] /* PF */
#define INOUTFLAGS_ZERO(x) INOUTFLAGS(FLAG_Z, x)
#define INOUTFLAGS_NONZERO(x) \
INOUTFLAGS((HIGH_REGISTER(BC) & 0xa8) | ((HIGH_REGISTER(BC) == 0) << 6), x)
int32 switch_cpu_now = TRUE; /* hharte */
t_stat sim_instr (void) {
uint32 i;
t_stat result;
if ((chiptype == CHIP_TYPE_8086) || (cpu_unit.flags & UNIT_CPU_MMU))
do {
result = (chiptype == CHIP_TYPE_8086) ? sim_instr_8086() : sim_instr_mmu();
} while (switch_cpu_now == FALSE);
else {
for (i = 0; i < MAXBANKSIZE; i++)
MOPT[i] = M[i];
result = sim_instr_nommu();
for (i = 0; i < MAXBANKSIZE; i++)
M[i] = MOPT[i];
}
return result;
}
static t_stat sim_instr_mmu (void) {
extern int32 sim_interval;
extern t_bool sim_brk_pend[SIM_BKPT_N_SPC];
extern int32 timerInterrupt;
extern int32 timerInterruptHandler;
extern int32 keyboardInterrupt;
extern uint32 keyboardInterruptHandler;
extern uint32 sim_os_msec(void);
extern const t_bool rtc_avail;
extern uint32 sim_brk_summ;
int32 reason = SCPE_OK;
register uint32 specialProcessing;
register uint32 AF;
register uint32 BC;
register uint32 DE;
register uint32 HL;
register uint32 PC;
register uint32 SP;
register uint32 IX;
register uint32 IY;
register uint32 temp = 0;
register uint32 acu = 0;
register uint32 sum;
register uint32 cbits;
register uint32 op;
register uint32 adr;
/* tStates contains the number of t-states executed. One t-state is executed
in one microsecond on a 1MHz CPU. tStates is used for real-time simulations. */
register uint32 tStates;
uint32 tStatesInSlice; /* number of t-states in 10 mSec time-slice */
uint32 startTime, now;
int32 tStateModifier = FALSE;
switch_cpu_now = TRUE; /* hharte */
AF = AF_S;
BC = BC_S;
DE = DE_S;
HL = HL_S;
PC = PC_S & ADDRMASK;
SP = SP_S;
IX = IX_S;
IY = IY_S;
specialProcessing = clockFrequency | timerInterrupt | keyboardInterrupt | sim_brk_summ;
tStates = 0;
if (rtc_avail) {
startTime = sim_os_msec();
tStatesInSlice = sliceLength*clockFrequency;
}
else { /* make sure that sim_os_msec() is not called later */
clockFrequency = startTime = tStatesInSlice = 0;
}
/* main instruction fetch/decode loop */
while (switch_cpu_now == TRUE) { /* loop until halted */
if (sim_interval <= 0) { /* check clock queue */
#if !UNIX_PLATFORM
if ((reason = sim_os_poll_kbd()) == SCPE_STOP) { /* poll on platforms without reliable signalling */
break;
}
#endif
if ( (reason = sim_process_event()) )
break;
else
specialProcessing = clockFrequency | timerInterrupt | keyboardInterrupt | sim_brk_summ;
}
if (specialProcessing) { /* quick check for special processing */
if (clockFrequency && (tStates >= tStatesInSlice)) {
/* clockFrequency != 0 implies that real time clock is available */
startTime += sliceLength;
tStates -= tStatesInSlice;
if (startTime > (now = sim_os_msec())) {
#if defined (_WIN32)
Sleep(startTime - now);
#else
usleep(1000 * (startTime - now));
#endif
}
}
if (timerInterrupt && (IFF_S & 1)) {
timerInterrupt = FALSE;
specialProcessing = clockFrequency | sim_brk_summ;
IFF_S = 0; /* disable interrupts */
CHECK_BREAK_TWO_BYTES_EXTENDED(SP - 2, SP - 1, (timerInterrupt = TRUE, IFF_S |= 1));
if ((GetBYTE(PC) == HALTINSTRUCTION) && ((cpu_unit.flags & UNIT_CPU_STOPONHALT) == 0)) {
PUSH(PC + 1);
PCQ_ENTRY(PC);
}
else {
PUSH(PC);
PCQ_ENTRY(PC - 1);
}
PC = timerInterruptHandler & ADDRMASK;
}
if (keyboardInterrupt && (IFF_S & 1)) {
keyboardInterrupt = FALSE;
specialProcessing = clockFrequency | sim_brk_summ;
IFF_S = 0; /* disable interrupts */
CHECK_BREAK_TWO_BYTES_EXTENDED(SP - 2, SP - 1, (keyboardInterrupt = TRUE, IFF_S |= 1));
if ((GetBYTE(PC) == HALTINSTRUCTION) && ((cpu_unit.flags & UNIT_CPU_STOPONHALT) == 0)) {
PUSH(PC + 1);
PCQ_ENTRY(PC);
}
else {
PUSH(PC);
PCQ_ENTRY(PC - 1);
}
PC = keyboardInterruptHandler & ADDRMASK;
}
if (sim_brk_summ) {
if (sim_brk_test(PC, (2u << SIM_BKPT_V_SPC) | SWMASK('E'))) { /* breakpoint? */
reason = STOP_IBKPT; /* stop simulation */
break;
}
if (sim_brk_test(GetBYTE(PC), (1u << SIM_BKPT_V_SPC) | SWMASK('I'))) { /* instruction breakpoint? */
reason = STOP_INSTR; /* stop simulation */
prepareInstructionMessage(PC, GetBYTE(PC));
break;
}
}
}
PCX = PC;
sim_interval--;
/* make sure that each instructions properly sets sim_brk_pend:
1) Either directly to FALSE if no memory access takes place or
2) through a call to a Check... routine
*/
switch(RAM_PP(PC)) {
case 0x00: /* NOP */
tStates += 4;
sim_brk_pend[0] = FALSE;
break;
case 0x01: /* LD BC,nnnn */
tStates += 10;
sim_brk_pend[0] = FALSE;
BC = GET_WORD(PC);
PC += 2;
break;
case 0x02: /* LD (BC),A */
tStates += 7;
CHECK_BREAK_BYTE(BC)
PutBYTE(BC, HIGH_REGISTER(AF));
break;
case 0x03: /* INC BC */
tStates += 6;
sim_brk_pend[0] = FALSE;
++BC;
break;
case 0x04: /* INC B */
tStates += 4;
sim_brk_pend[0] = FALSE;
BC += 0x100;
temp = HIGH_REGISTER(BC);
AF = (AF & ~0xfe) | incTable[temp] | SET_PV2(0x80); /* SET_PV2 uses temp */
break;
case 0x05: /* DEC B */
tStates += 4;
sim_brk_pend[0] = FALSE;
BC -= 0x100;
temp = HIGH_REGISTER(BC);
AF = (AF & ~0xfe) | decTable[temp] | SET_PV2(0x7f); /* SET_PV2 uses temp */
break;
case 0x06: /* LD B,nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(BC, RAM_PP(PC));
break;
case 0x07: /* RLCA */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = ((AF >> 7) & 0x0128) | ((AF << 1) & ~0x1ff) |
(AF & 0xc4) | ((AF >> 15) & 1);
break;
case 0x08: /* EX AF,AF' */
tStates += 4;
sim_brk_pend[0] = FALSE;
CHECK_CPU_8080;
temp = AF;
AF = AF1_S;
AF1_S = temp;
break;
case 0x09: /* ADD HL,BC */
tStates += 11;
sim_brk_pend[0] = FALSE;
HL &= ADDRMASK;
BC &= ADDRMASK;
sum = HL + BC;
AF = (AF & ~0x3b) | ((sum >> 8) & 0x28) | cbitsTable[(HL ^ BC ^ sum) >> 8];
HL = sum;
break;
case 0x0a: /* LD A,(BC) */
tStates += 7;
CHECK_BREAK_BYTE(BC)
SET_HIGH_REGISTER(AF, GetBYTE(BC));
break;
case 0x0b: /* DEC BC */
tStates += 6;
sim_brk_pend[0] = FALSE;
--BC;
break;
case 0x0c: /* INC C */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(BC) + 1;
SET_LOW_REGISTER(BC, temp);
AF = (AF & ~0xfe) | incTable[temp] | SET_PV2(0x80);
break;
case 0x0d: /* DEC C */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(BC) - 1;
SET_LOW_REGISTER(BC, temp);
AF = (AF & ~0xfe) | decTable[temp & 0xff] | SET_PV2(0x7f);
break;
case 0x0e: /* LD C,nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(BC, RAM_PP(PC));
break;
case 0x0f: /* RRCA */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = (AF & 0xc4) | rrcaTable[HIGH_REGISTER(AF)];
break;
case 0x10: /* DJNZ dd */
sim_brk_pend[0] = FALSE;
CHECK_CPU_8080;
if ((BC -= 0x100) & 0xff00) {
PCQ_ENTRY(PCX);
PC += (int8) GetBYTE(PC) + 1;
tStates += 13;
}
else {
PC++;
tStates += 8;
}
break;
case 0x11: /* LD DE,nnnn */
tStates += 10;
sim_brk_pend[0] = FALSE;
DE = GET_WORD(PC);
PC += 2;
break;
case 0x12: /* LD (DE),A */
tStates += 7;
CHECK_BREAK_BYTE(DE)
PutBYTE(DE, HIGH_REGISTER(AF));
break;
case 0x13: /* INC DE */
tStates += 6;
sim_brk_pend[0] = FALSE;
++DE;
break;
case 0x14: /* INC D */
tStates += 4;
sim_brk_pend[0] = FALSE;
DE += 0x100;
temp = HIGH_REGISTER(DE);
AF = (AF & ~0xfe) | incTable[temp] | SET_PV2(0x80); /* SET_PV2 uses temp */
break;
case 0x15: /* DEC D */
tStates += 4;
sim_brk_pend[0] = FALSE;
DE -= 0x100;
temp = HIGH_REGISTER(DE);
AF = (AF & ~0xfe) | decTable[temp] | SET_PV2(0x7f); /* SET_PV2 uses temp */
break;
case 0x16: /* LD D,nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(DE, RAM_PP(PC));
break;
case 0x17: /* RLA */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = ((AF << 8) & 0x0100) | ((AF >> 7) & 0x28) | ((AF << 1) & ~0x01ff) |
(AF & 0xc4) | ((AF >> 15) & 1);
break;
case 0x18: /* JR dd */
tStates += 12;
sim_brk_pend[0] = FALSE;
CHECK_CPU_8080;
PCQ_ENTRY(PCX);
PC += (int8) GetBYTE(PC) + 1;
break;
case 0x19: /* ADD HL,DE */
tStates += 11;
sim_brk_pend[0] = FALSE;
HL &= ADDRMASK;
DE &= ADDRMASK;
sum = HL + DE;
AF = (AF & ~0x3b) | ((sum >> 8) & 0x28) | cbitsTable[(HL ^ DE ^ sum) >> 8];
HL = sum;
break;
case 0x1a: /* LD A,(DE) */
tStates += 7;
CHECK_BREAK_BYTE(DE)
SET_HIGH_REGISTER(AF, GetBYTE(DE));
break;
case 0x1b: /* DEC DE */
tStates += 6;
sim_brk_pend[0] = FALSE;
--DE;
break;
case 0x1c: /* INC E */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(DE) + 1;
SET_LOW_REGISTER(DE, temp);
AF = (AF & ~0xfe) | incTable[temp] | SET_PV2(0x80);
break;
case 0x1d: /* DEC E */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(DE) - 1;
SET_LOW_REGISTER(DE, temp);
AF = (AF & ~0xfe) | decTable[temp & 0xff] | SET_PV2(0x7f);
break;
case 0x1e: /* LD E,nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(DE, RAM_PP(PC));
break;
case 0x1f: /* RRA */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = ((AF & 1) << 15) | (AF & 0xc4) | rraTable[HIGH_REGISTER(AF)];
break;
case 0x20: /* JR NZ,dd */
sim_brk_pend[0] = FALSE;
CHECK_CPU_8080;
if (TSTFLAG(Z)) {
PC++;
tStates += 7;
}
else {
PCQ_ENTRY(PCX);
PC += (int8) GetBYTE(PC) + 1;
tStates += 12;
}
break;
case 0x21: /* LD HL,nnnn */
tStates += 10;
sim_brk_pend[0] = FALSE;
HL = GET_WORD(PC);
PC += 2;
break;
case 0x22: /* LD (nnnn),HL */
tStates += 16;
temp = GET_WORD(PC);
CHECK_BREAK_WORD(temp);
PutWORD(temp, HL);
PC += 2;
break;
case 0x23: /* INC HL */
tStates += 6;
sim_brk_pend[0] = FALSE;
++HL;
break;
case 0x24: /* INC H */
tStates += 4;
sim_brk_pend[0] = FALSE;
HL += 0x100;
temp = HIGH_REGISTER(HL);
AF = (AF & ~0xfe) | incTable[temp] | SET_PV2(0x80); /* SET_PV2 uses temp */
break;
case 0x25: /* DEC H */
tStates += 4;
sim_brk_pend[0] = FALSE;
HL -= 0x100;
temp = HIGH_REGISTER(HL);
AF = (AF & ~0xfe) | decTable[temp] | SET_PV2(0x7f); /* SET_PV2 uses temp */
break;
case 0x26: /* LD H,nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(HL, RAM_PP(PC));
break;
case 0x27: /* DAA */
tStates += 4;
sim_brk_pend[0] = FALSE;
acu = HIGH_REGISTER(AF);
temp = LOW_DIGIT(acu);
cbits = TSTFLAG(C);
if (TSTFLAG(N)) { /* last operation was a subtract */
int hd = cbits || acu > 0x99;
if (TSTFLAG(H) || (temp > 9)) { /* adjust low digit */
if (temp > 5) {
SETFLAG(H, 0);
}
acu -= 6;
acu &= 0xff;
}
if (hd)
acu -= 0x160; /* adjust high digit */
}
else { /* last operation was an add */
if (TSTFLAG(H) || (temp > 9)) { /* adjust low digit */
SETFLAG(H, (temp > 9));
acu += 6;
}
if (cbits || ((acu & 0x1f0) > 0x90))
acu += 0x60; /* adjust high digit */
}
AF = (AF & 0x12) | rrdrldTable[acu & 0xff] | ((acu >> 8) & 1) | cbits;
break;
case 0x28: /* JR Z,dd */
sim_brk_pend[0] = FALSE;
CHECK_CPU_8080;
if (TSTFLAG(Z)) {
PCQ_ENTRY(PCX);
PC += (int8) GetBYTE(PC) + 1;
tStates += 12;
}
else {
PC++;
tStates += 7;
}
break;
case 0x29: /* ADD HL,HL */
tStates += 11;
sim_brk_pend[0] = FALSE;
HL &= ADDRMASK;
sum = HL + HL;
AF = (AF & ~0x3b) | cbitsDup16Table[sum >> 8];
HL = sum;
break;
case 0x2a: /* LD HL,(nnnn) */
tStates += 16;
temp = GET_WORD(PC);
CHECK_BREAK_WORD(temp);
HL = GET_WORD(temp);
PC += 2;
break;
case 0x2b: /* DEC HL */
tStates += 6;
sim_brk_pend[0] = FALSE;
--HL;
break;
case 0x2c: /* INC L */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(HL) + 1;
SET_LOW_REGISTER(HL, temp);
AF = (AF & ~0xfe) | incTable[temp] | SET_PV2(0x80);
break;
case 0x2d: /* DEC L */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(HL) - 1;
SET_LOW_REGISTER(HL, temp);
AF = (AF & ~0xfe) | decTable[temp & 0xff] | SET_PV2(0x7f);
break;
case 0x2e: /* LD L,nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(HL, RAM_PP(PC));
break;
case 0x2f: /* CPL */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = (~AF & ~0xff) | (AF & 0xc5) | ((~AF >> 8) & 0x28) | 0x12;
break;
case 0x30: /* JR NC,dd */
sim_brk_pend[0] = FALSE;
CHECK_CPU_8080;
if (TSTFLAG(C)) {
PC++;
tStates += 7;
}
else {
PCQ_ENTRY(PCX);
PC += (int8) GetBYTE(PC) + 1;
tStates += 12;
}
break;
case 0x31: /* LD SP,nnnn */
tStates += 10;
sim_brk_pend[0] = FALSE;
SP = GET_WORD(PC);
PC += 2;
break;
case 0x32: /* LD (nnnn),A */
tStates += 13;
temp = GET_WORD(PC);
CHECK_BREAK_BYTE(temp);
PutBYTE(temp, HIGH_REGISTER(AF));
PC += 2;
break;
case 0x33: /* INC SP */
tStates += 6;
sim_brk_pend[0] = FALSE;
++SP;
break;
case 0x34: /* INC (HL) */
tStates += 11;
CHECK_BREAK_BYTE(HL);
temp = GetBYTE(HL) + 1;
PutBYTE(HL, temp);
AF = (AF & ~0xfe) | incTable[temp] | SET_PV2(0x80);
break;
case 0x35: /* DEC (HL) */
tStates += 11;
CHECK_BREAK_BYTE(HL);
temp = GetBYTE(HL) - 1;
PutBYTE(HL, temp);
AF = (AF & ~0xfe) | decTable[temp & 0xff] | SET_PV2(0x7f);
break;
case 0x36: /* LD (HL),nn */
tStates += 10;
CHECK_BREAK_BYTE(HL);
PutBYTE(HL, RAM_PP(PC));
break;
case 0x37: /* SCF */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = (AF & ~0x3b) | ((AF >> 8) & 0x28) | 1;
break;
case 0x38: /* JR C,dd */
sim_brk_pend[0] = FALSE;
CHECK_CPU_8080;
if (TSTFLAG(C)) {
PCQ_ENTRY(PCX);
PC += (int8) GetBYTE(PC) + 1;
tStates += 12;
}
else {
PC++;
tStates += 7;
}
break;
case 0x39: /* ADD HL,SP */
tStates += 11;
sim_brk_pend[0] = FALSE;
HL &= ADDRMASK;
SP &= ADDRMASK;
sum = HL + SP;
AF = (AF & ~0x3b) | ((sum >> 8) & 0x28) | cbitsTable[(HL ^ SP ^ sum) >> 8];
HL = sum;
break;
case 0x3a: /* LD A,(nnnn) */
tStates += 13;
temp = GET_WORD(PC);
CHECK_BREAK_BYTE(temp);
SET_HIGH_REGISTER(AF, GetBYTE(temp));
PC += 2;
break;
case 0x3b: /* DEC SP */
tStates += 6;
sim_brk_pend[0] = FALSE;
--SP;
break;
case 0x3c: /* INC A */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF += 0x100;
temp = HIGH_REGISTER(AF);
AF = (AF & ~0xfe) | incTable[temp] | SET_PV2(0x80); /* SET_PV2 uses temp */
break;
case 0x3d: /* DEC A */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF -= 0x100;
temp = HIGH_REGISTER(AF);
AF = (AF & ~0xfe) | decTable[temp] | SET_PV2(0x7f); /* SET_PV2 uses temp */
break;
case 0x3e: /* LD A,nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(AF, RAM_PP(PC));
break;
case 0x3f: /* CCF */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = (AF & ~0x3b) | ((AF >> 8) & 0x28) | ((AF & 1) << 4) | (~AF & 1);
break;
case 0x40: /* LD B,B */
tStates += 4;
sim_brk_pend[0] = FALSE; /* nop */
break;
case 0x41: /* LD B,C */
tStates += 4;
sim_brk_pend[0] = FALSE;
BC = (BC & 0xff) | ((BC & 0xff) << 8);
break;
case 0x42: /* LD B,D */
tStates += 4;
sim_brk_pend[0] = FALSE;
BC = (BC & 0xff) | (DE & ~0xff);
break;
case 0x43: /* LD B,E */
tStates += 4;
sim_brk_pend[0] = FALSE;
BC = (BC & 0xff) | ((DE & 0xff) << 8);
break;
case 0x44: /* LD B,H */
tStates += 4;
sim_brk_pend[0] = FALSE;
BC = (BC & 0xff) | (HL & ~0xff);
break;
case 0x45: /* LD B,L */
tStates += 4;
sim_brk_pend[0] = FALSE;
BC = (BC & 0xff) | ((HL & 0xff) << 8);
break;
case 0x46: /* LD B,(HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
SET_HIGH_REGISTER(BC, GetBYTE(HL));
break;
case 0x47: /* LD B,A */
tStates += 4;
sim_brk_pend[0] = FALSE;
BC = (BC & 0xff) | (AF & ~0xff);
break;
case 0x48: /* LD C,B */
tStates += 4;
sim_brk_pend[0] = FALSE;
BC = (BC & ~0xff) | ((BC >> 8) & 0xff);
break;
case 0x49: /* LD C,C */
tStates += 4;
sim_brk_pend[0] = FALSE; /* nop */
break;
case 0x4a: /* LD C,D */
tStates += 4;
sim_brk_pend[0] = FALSE;
BC = (BC & ~0xff) | ((DE >> 8) & 0xff);
break;
case 0x4b: /* LD C,E */
tStates += 4;
sim_brk_pend[0] = FALSE;
BC = (BC & ~0xff) | (DE & 0xff);
break;
case 0x4c: /* LD C,H */
tStates += 4;
sim_brk_pend[0] = FALSE;
BC = (BC & ~0xff) | ((HL >> 8) & 0xff);
break;
case 0x4d: /* LD C,L */
tStates += 4;
sim_brk_pend[0] = FALSE;
BC = (BC & ~0xff) | (HL & 0xff);
break;
case 0x4e: /* LD C,(HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
SET_LOW_REGISTER(BC, GetBYTE(HL));
break;
case 0x4f: /* LD C,A */
tStates += 4;
sim_brk_pend[0] = FALSE;
BC = (BC & ~0xff) | ((AF >> 8) & 0xff);
break;
case 0x50: /* LD D,B */
tStates += 4;
sim_brk_pend[0] = FALSE;
DE = (DE & 0xff) | (BC & ~0xff);
break;
case 0x51: /* LD D,C */
tStates += 4;
sim_brk_pend[0] = FALSE;
DE = (DE & 0xff) | ((BC & 0xff) << 8);
break;
case 0x52: /* LD D,D */
tStates += 4;
sim_brk_pend[0] = FALSE; /* nop */
break;
case 0x53: /* LD D,E */
tStates += 4;
sim_brk_pend[0] = FALSE;
DE = (DE & 0xff) | ((DE & 0xff) << 8);
break;
case 0x54: /* LD D,H */
tStates += 4;
sim_brk_pend[0] = FALSE;
DE = (DE & 0xff) | (HL & ~0xff);
break;
case 0x55: /* LD D,L */
tStates += 4;
sim_brk_pend[0] = FALSE;
DE = (DE & 0xff) | ((HL & 0xff) << 8);
break;
case 0x56: /* LD D,(HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
SET_HIGH_REGISTER(DE, GetBYTE(HL));
break;
case 0x57: /* LD D,A */
tStates += 4;
sim_brk_pend[0] = FALSE;
DE = (DE & 0xff) | (AF & ~0xff);
break;
case 0x58: /* LD E,B */
tStates += 4;
sim_brk_pend[0] = FALSE;
DE = (DE & ~0xff) | ((BC >> 8) & 0xff);
break;
case 0x59: /* LD E,C */
tStates += 4;
sim_brk_pend[0] = FALSE;
DE = (DE & ~0xff) | (BC & 0xff);
break;
case 0x5a: /* LD E,D */
tStates += 4;
sim_brk_pend[0] = FALSE;
DE = (DE & ~0xff) | ((DE >> 8) & 0xff);
break;
case 0x5b: /* LD E,E */
tStates += 4;
sim_brk_pend[0] = FALSE; /* nop */
break;
case 0x5c: /* LD E,H */
tStates += 4;
sim_brk_pend[0] = FALSE;
DE = (DE & ~0xff) | ((HL >> 8) & 0xff);
break;
case 0x5d: /* LD E,L */
tStates += 4;
sim_brk_pend[0] = FALSE;
DE = (DE & ~0xff) | (HL & 0xff);
break;
case 0x5e: /* LD E,(HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
SET_LOW_REGISTER(DE, GetBYTE(HL));
break;
case 0x5f: /* LD E,A */
tStates += 4;
sim_brk_pend[0] = FALSE;
DE = (DE & ~0xff) | ((AF >> 8) & 0xff);
break;
case 0x60: /* LD H,B */
tStates += 4;
sim_brk_pend[0] = FALSE;
HL = (HL & 0xff) | (BC & ~0xff);
break;
case 0x61: /* LD H,C */
tStates += 4;
sim_brk_pend[0] = FALSE;
HL = (HL & 0xff) | ((BC & 0xff) << 8);
break;
case 0x62: /* LD H,D */
tStates += 4;
sim_brk_pend[0] = FALSE;
HL = (HL & 0xff) | (DE & ~0xff);
break;
case 0x63: /* LD H,E */
tStates += 4;
sim_brk_pend[0] = FALSE;
HL = (HL & 0xff) | ((DE & 0xff) << 8);
break;
case 0x64: /* LD H,H */
tStates += 4;
sim_brk_pend[0] = FALSE; /* nop */
break;
case 0x65: /* LD H,L */
tStates += 4;
sim_brk_pend[0] = FALSE;
HL = (HL & 0xff) | ((HL & 0xff) << 8);
break;
case 0x66: /* LD H,(HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
SET_HIGH_REGISTER(HL, GetBYTE(HL));
break;
case 0x67: /* LD H,A */
tStates += 4;
sim_brk_pend[0] = FALSE;
HL = (HL & 0xff) | (AF & ~0xff);
break;
case 0x68: /* LD L,B */
tStates += 4;
sim_brk_pend[0] = FALSE;
HL = (HL & ~0xff) | ((BC >> 8) & 0xff);
break;
case 0x69: /* LD L,C */
tStates += 4;
sim_brk_pend[0] = FALSE;
HL = (HL & ~0xff) | (BC & 0xff);
break;
case 0x6a: /* LD L,D */
tStates += 4;
sim_brk_pend[0] = FALSE;
HL = (HL & ~0xff) | ((DE >> 8) & 0xff);
break;
case 0x6b: /* LD L,E */
tStates += 4;
sim_brk_pend[0] = FALSE;
HL = (HL & ~0xff) | (DE & 0xff);
break;
case 0x6c: /* LD L,H */
tStates += 4;
sim_brk_pend[0] = FALSE;
HL = (HL & ~0xff) | ((HL >> 8) & 0xff);
break;
case 0x6d: /* LD L,L */
tStates += 4;
sim_brk_pend[0] = FALSE; /* nop */
break;
case 0x6e: /* LD L,(HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
SET_LOW_REGISTER(HL, GetBYTE(HL));
break;
case 0x6f: /* LD L,A */
tStates += 4;
sim_brk_pend[0] = FALSE;
HL = (HL & ~0xff) | ((AF >> 8) & 0xff);
break;
case 0x70: /* LD (HL),B */
tStates += 7;
CHECK_BREAK_BYTE(HL);
PutBYTE(HL, HIGH_REGISTER(BC));
break;
case 0x71: /* LD (HL),C */
tStates += 7;
CHECK_BREAK_BYTE(HL);
PutBYTE(HL, LOW_REGISTER(BC));
break;
case 0x72: /* LD (HL),D */
tStates += 7;
CHECK_BREAK_BYTE(HL);
PutBYTE(HL, HIGH_REGISTER(DE));
break;
case 0x73: /* LD (HL),E */
tStates += 7;
CHECK_BREAK_BYTE(HL);
PutBYTE(HL, LOW_REGISTER(DE));
break;
case 0x74: /* LD (HL),H */
tStates += 7;
CHECK_BREAK_BYTE(HL);
PutBYTE(HL, HIGH_REGISTER(HL));
break;
case 0x75: /* LD (HL),L */
tStates += 7;
CHECK_BREAK_BYTE(HL);
PutBYTE(HL, LOW_REGISTER(HL));
break;
case HALTINSTRUCTION: /* HALT */
tStates += 4;
sim_brk_pend[0] = FALSE;
PC--;
if (cpu_unit.flags & UNIT_CPU_STOPONHALT) {
reason = STOP_HALT;
goto end_decode;
}
sim_interval = 0;
do_SIMH_sleep(); /* reduce CPU load in busy wait */
break;
case 0x77: /* LD (HL),A */
tStates += 7;
CHECK_BREAK_BYTE(HL);
PutBYTE(HL, HIGH_REGISTER(AF));
break;
case 0x78: /* LD A,B */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = (AF & 0xff) | (BC & ~0xff);
break;
case 0x79: /* LD A,C */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = (AF & 0xff) | ((BC & 0xff) << 8);
break;
case 0x7a: /* LD A,D */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = (AF & 0xff) | (DE & ~0xff);
break;
case 0x7b: /* LD A,E */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = (AF & 0xff) | ((DE & 0xff) << 8);
break;
case 0x7c: /* LD A,H */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = (AF & 0xff) | (HL & ~0xff);
break;
case 0x7d: /* LD A,L */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = (AF & 0xff) | ((HL & 0xff) << 8);
break;
case 0x7e: /* LD A,(HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
SET_HIGH_REGISTER(AF, GetBYTE(HL));
break;
case 0x7f: /* LD A,A */
tStates += 4;
sim_brk_pend[0] = FALSE; /* nop */
break;
case 0x80: /* ADD A,B */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(BC);
acu = HIGH_REGISTER(AF);
sum = acu + temp;
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0x81: /* ADD A,C */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(BC);
acu = HIGH_REGISTER(AF);
sum = acu + temp;
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0x82: /* ADD A,D */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(DE);
acu = HIGH_REGISTER(AF);
sum = acu + temp;
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0x83: /* ADD A,E */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(DE);
acu = HIGH_REGISTER(AF);
sum = acu + temp;
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0x84: /* ADD A,H */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(HL);
acu = HIGH_REGISTER(AF);
sum = acu + temp;
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0x85: /* ADD A,L */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(HL);
acu = HIGH_REGISTER(AF);
sum = acu + temp;
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0x86: /* ADD A,(HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
temp = GetBYTE(HL);
acu = HIGH_REGISTER(AF);
sum = acu + temp;
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0x87: /* ADD A,A */
tStates += 4;
sim_brk_pend[0] = FALSE;
cbits = 2 * HIGH_REGISTER(AF);
AF = cbitsDup8Table[cbits] | (SET_PVS(cbits));
break;
case 0x88: /* ADC A,B */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(BC);
acu = HIGH_REGISTER(AF);
sum = acu + temp + TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0x89: /* ADC A,C */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(BC);
acu = HIGH_REGISTER(AF);
sum = acu + temp + TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0x8a: /* ADC A,D */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(DE);
acu = HIGH_REGISTER(AF);
sum = acu + temp + TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0x8b: /* ADC A,E */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(DE);
acu = HIGH_REGISTER(AF);
sum = acu + temp + TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0x8c: /* ADC A,H */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(HL);
acu = HIGH_REGISTER(AF);
sum = acu + temp + TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0x8d: /* ADC A,L */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(HL);
acu = HIGH_REGISTER(AF);
sum = acu + temp + TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0x8e: /* ADC A,(HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
temp = GetBYTE(HL);
acu = HIGH_REGISTER(AF);
sum = acu + temp + TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0x8f: /* ADC A,A */
tStates += 4;
sim_brk_pend[0] = FALSE;
cbits = 2 * HIGH_REGISTER(AF) + TSTFLAG(C);
AF = cbitsDup8Table[cbits] | (SET_PVS(cbits));
break;
case 0x90: /* SUB B */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(BC);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0x91: /* SUB C */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(BC);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0x92: /* SUB D */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(DE);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0x93: /* SUB E */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(DE);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0x94: /* SUB H */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(HL);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0x95: /* SUB L */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(HL);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0x96: /* SUB (HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
temp = GetBYTE(HL);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0x97: /* SUB A */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = (chiptype == CHIP_TYPE_Z80) ? 0x42 : 0x46;
break;
case 0x98: /* SBC A,B */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(BC);
acu = HIGH_REGISTER(AF);
sum = acu - temp - TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0x99: /* SBC A,C */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(BC);
acu = HIGH_REGISTER(AF);
sum = acu - temp - TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0x9a: /* SBC A,D */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(DE);
acu = HIGH_REGISTER(AF);
sum = acu - temp - TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0x9b: /* SBC A,E */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(DE);
acu = HIGH_REGISTER(AF);
sum = acu - temp - TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0x9c: /* SBC A,H */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(HL);
acu = HIGH_REGISTER(AF);
sum = acu - temp - TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0x9d: /* SBC A,L */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(HL);
acu = HIGH_REGISTER(AF);
sum = acu - temp - TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0x9e: /* SBC A,(HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
temp = GetBYTE(HL);
acu = HIGH_REGISTER(AF);
sum = acu - temp - TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0x9f: /* SBC A,A */
tStates += 4;
sim_brk_pend[0] = FALSE;
cbits = -TSTFLAG(C);
AF = subTable[cbits & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PVS(cbits));
break;
case 0xa0: /* AND B */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = andTable[((AF & BC) >> 8) & 0xff];
break;
case 0xa1: /* AND C */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = andTable[((AF >> 8) & BC) & 0xff];
break;
case 0xa2: /* AND D */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = andTable[((AF & DE) >> 8) & 0xff];
break;
case 0xa3: /* AND E */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = andTable[((AF >> 8) & DE) & 0xff];
break;
case 0xa4: /* AND H */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = andTable[((AF & HL) >> 8) & 0xff];
break;
case 0xa5: /* AND L */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = andTable[((AF >> 8) & HL) & 0xff];
break;
case 0xa6: /* AND (HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
AF = andTable[((AF >> 8) & GetBYTE(HL)) & 0xff];
break;
case 0xa7: /* AND A */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = andTable[(AF >> 8) & 0xff];
break;
case 0xa8: /* XOR B */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF ^ BC) >> 8) & 0xff];
break;
case 0xa9: /* XOR C */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF >> 8) ^ BC) & 0xff];
break;
case 0xaa: /* XOR D */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF ^ DE) >> 8) & 0xff];
break;
case 0xab: /* XOR E */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF >> 8) ^ DE) & 0xff];
break;
case 0xac: /* XOR H */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF ^ HL) >> 8) & 0xff];
break;
case 0xad: /* XOR L */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF >> 8) ^ HL) & 0xff];
break;
case 0xae: /* XOR (HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
AF = xororTable[((AF >> 8) ^ GetBYTE(HL)) & 0xff];
break;
case 0xaf: /* XOR A */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = 0x44;
break;
case 0xb0: /* OR B */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF | BC) >> 8) & 0xff];
break;
case 0xb1: /* OR C */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF >> 8) | BC) & 0xff];
break;
case 0xb2: /* OR D */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF | DE) >> 8) & 0xff];
break;
case 0xb3: /* OR E */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF >> 8) | DE) & 0xff];
break;
case 0xb4: /* OR H */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF | HL) >> 8) & 0xff];
break;
case 0xb5: /* OR L */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF >> 8) | HL) & 0xff];
break;
case 0xb6: /* OR (HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
AF = xororTable[((AF >> 8) | GetBYTE(HL)) & 0xff];
break;
case 0xb7: /* OR A */
tStates += 4;
sim_brk_pend[0] = FALSE;
AF = xororTable[(AF >> 8) & 0xff];
break;
case 0xb8: /* CP B */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(BC);
AF = (AF & ~0x28) | (temp & 0x28);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = (AF & ~0xff) | cpTable[sum & 0xff] | (temp & 0x28) |
(SET_PV) | cbits2Table[cbits & 0x1ff];
break;
case 0xb9: /* CP C */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(BC);
AF = (AF & ~0x28) | (temp & 0x28);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = (AF & ~0xff) | cpTable[sum & 0xff] | (temp & 0x28) |
(SET_PV) | cbits2Table[cbits & 0x1ff];
break;
case 0xba: /* CP D */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(DE);
AF = (AF & ~0x28) | (temp & 0x28);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = (AF & ~0xff) | cpTable[sum & 0xff] | (temp & 0x28) |
(SET_PV) | cbits2Table[cbits & 0x1ff];
break;
case 0xbb: /* CP E */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(DE);
AF = (AF & ~0x28) | (temp & 0x28);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = (AF & ~0xff) | cpTable[sum & 0xff] | (temp & 0x28) |
(SET_PV) | cbits2Table[cbits & 0x1ff];
break;
case 0xbc: /* CP H */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(HL);
AF = (AF & ~0x28) | (temp & 0x28);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = (AF & ~0xff) | cpTable[sum & 0xff] | (temp & 0x28) |
(SET_PV) | cbits2Table[cbits & 0x1ff];
break;
case 0xbd: /* CP L */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(HL);
AF = (AF & ~0x28) | (temp & 0x28);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = (AF & ~0xff) | cpTable[sum & 0xff] | (temp & 0x28) |
(SET_PV) | cbits2Table[cbits & 0x1ff];
break;
case 0xbe: /* CP (HL) */
tStates += 7;
CHECK_BREAK_BYTE(HL);
temp = GetBYTE(HL);
AF = (AF & ~0x28) | (temp & 0x28);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = (AF & ~0xff) | cpTable[sum & 0xff] | (temp & 0x28) |
(SET_PV) | cbits2Table[cbits & 0x1ff];
break;
case 0xbf: /* CP A */
tStates += 4;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(AF, (HIGH_REGISTER(AF) & 0x28) | (chiptype == CHIP_TYPE_Z80 ? 0x42 : 0x46));
break;
case 0xc0: /* RET NZ */
if (TSTFLAG(Z)) {
sim_brk_pend[0] = FALSE;
tStates += 5;
}
else {
CHECK_BREAK_WORD(SP);
PCQ_ENTRY(PCX);
POP(PC);
tStates += 11;
}
break;
case 0xc1: /* POP BC */
tStates += 10;
CHECK_BREAK_WORD(SP);
POP(BC);
break;
case 0xc2: /* JP NZ,nnnn */
sim_brk_pend[0] = FALSE;
JPC(!TSTFLAG(Z)); /* also updates tStates */
break;
case 0xc3: /* JP nnnn */
sim_brk_pend[0] = FALSE;
JPC(1); /* also updates tStates */
break;
case 0xc4: /* CALL NZ,nnnn */
CALLC(!TSTFLAG(Z)); /* also updates tStates */
break;
case 0xc5: /* PUSH BC */
tStates += 11;
CHECK_BREAK_WORD(SP - 2);
PUSH(BC);
break;
case 0xc6: /* ADD A,nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
temp = RAM_PP(PC);
acu = HIGH_REGISTER(AF);
sum = acu + temp;
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0xc7: /* RST 0 */
tStates += 11;
CHECK_BREAK_WORD(SP - 2);
PUSH(PC);
PCQ_ENTRY(PCX);
PC = 0;
break;
case 0xc8: /* RET Z */
if (TSTFLAG(Z)) {
CHECK_BREAK_WORD(SP);
PCQ_ENTRY(PCX);
POP(PC);
tStates += 11;
}
else {
sim_brk_pend[0] = FALSE;
tStates += 5;
}
break;
case 0xc9: /* RET */
tStates += 10;
CHECK_BREAK_WORD(SP);
PCQ_ENTRY(PCX);
POP(PC);
break;
case 0xca: /* JP Z,nnnn */
sim_brk_pend[0] = FALSE;
JPC(TSTFLAG(Z)); /* also updates tStates */
break;
case 0xcb: /* CB prefix */
CHECK_CPU_8080;
adr = HL;
switch ((op = GetBYTE(PC)) & 7) {
case 0:
sim_brk_pend[0] = tStateModifier = FALSE;
++PC;
acu = HIGH_REGISTER(BC);
tStates += 8;
break;
case 1:
sim_brk_pend[0] = tStateModifier = FALSE;
++PC;
acu = LOW_REGISTER(BC);
tStates += 8;
break;
case 2:
sim_brk_pend[0] = tStateModifier = FALSE;
++PC;
acu = HIGH_REGISTER(DE);
tStates += 8;
break;
case 3:
sim_brk_pend[0] = tStateModifier = FALSE;
++PC;
acu = LOW_REGISTER(DE);
tStates += 8;
break;
case 4:
sim_brk_pend[0] = tStateModifier = FALSE;
++PC;
acu = HIGH_REGISTER(HL);
tStates += 8;
break;
case 5:
sim_brk_pend[0] = tStateModifier = FALSE;
++PC;
acu = LOW_REGISTER(HL);
tStates += 8;
break;
case 6:
CHECK_BREAK_BYTE(adr);
++PC;
acu = GetBYTE(adr);
tStateModifier = TRUE;
tStates += 15;
break;
case 7:
sim_brk_pend[0] = tStateModifier = FALSE;
++PC;
acu = HIGH_REGISTER(AF);
tStates += 8;
break;
}
switch (op & 0xc0) {
case 0x00: /* shift/rotate */
switch (op & 0x38) {
case 0x00: /* RLC */
temp = (acu << 1) | (acu >> 7);
cbits = temp & 1;
goto cbshflg1;
case 0x08: /* RRC */
temp = (acu >> 1) | (acu << 7);
cbits = temp & 0x80;
goto cbshflg1;
case 0x10: /* RL */
temp = (acu << 1) | TSTFLAG(C);
cbits = acu & 0x80;
goto cbshflg1;
case 0x18: /* RR */
temp = (acu >> 1) | (TSTFLAG(C) << 7);
cbits = acu & 1;
goto cbshflg1;
case 0x20: /* SLA */
temp = acu << 1;
cbits = acu & 0x80;
goto cbshflg1;
case 0x28: /* SRA */
temp = (acu >> 1) | (acu & 0x80);
cbits = acu & 1;
goto cbshflg1;
case 0x30: /* SLIA */
temp = (acu << 1) | 1;
cbits = acu & 0x80;
goto cbshflg1;
case 0x38: /* SRL */
temp = acu >> 1;
cbits = acu & 1;
cbshflg1:
AF = (AF & ~0xff) | rotateShiftTable[temp & 0xff] | !!cbits;
/* !!cbits == 0 if cbits == 0 !!cbits == 1 if cbits > 0 */
}
break;
case 0x40: /* BIT */
if (tStateModifier)
tStates -= 3;
if (acu & (1 << ((op >> 3) & 7)))
AF = (AF & ~0xfe) | 0x10 | (((op & 0x38) == 0x38) << 7);
else
AF = (AF & ~0xfe) | 0x54;
if ((op & 7) != 6)
AF |= (acu & 0x28);
temp = acu;
break;
case 0x80: /* RES */
temp = acu & ~(1 << ((op >> 3) & 7));
break;
case 0xc0: /* SET */
temp = acu | (1 << ((op >> 3) & 7));
break;
}
switch (op & 7) {
case 0:
SET_HIGH_REGISTER(BC, temp);
break;
case 1:
SET_LOW_REGISTER(BC, temp);
break;
case 2:
SET_HIGH_REGISTER(DE, temp);
break;
case 3:
SET_LOW_REGISTER(DE, temp);
break;
case 4:
SET_HIGH_REGISTER(HL, temp);
break;
case 5:
SET_LOW_REGISTER(HL, temp);
break;
case 6:
PutBYTE(adr, temp);
break;
case 7:
SET_HIGH_REGISTER(AF, temp);
break;
}
break;
case 0xcc: /* CALL Z,nnnn */
CALLC(TSTFLAG(Z)); /* also updates tStates */
break;
case 0xcd: /* CALL nnnn */
CALLC(1); /* also updates tStates */
break;
case 0xce: /* ADC A,nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
temp = RAM_PP(PC);
acu = HIGH_REGISTER(AF);
sum = acu + temp + TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = addTable[sum] | cbitsTable[cbits] | (SET_PV);
break;
case 0xcf: /* RST 8 */
tStates += 11;
CHECK_BREAK_WORD(SP - 2);
PUSH(PC);
PCQ_ENTRY(PCX);
PC = 8;
break;
case 0xd0: /* RET NC */
if (TSTFLAG(C)) {
sim_brk_pend[0] = FALSE;
tStates += 5;
}
else {
CHECK_BREAK_WORD(SP);
PCQ_ENTRY(PCX);
POP(PC);
tStates += 11;
}
break;
case 0xd1: /* POP DE */
tStates += 10;
CHECK_BREAK_WORD(SP);
POP(DE);
break;
case 0xd2: /* JP NC,nnnn */
sim_brk_pend[0] = FALSE;
JPC(!TSTFLAG(C)); /* also updates tStates */
break;
case 0xd3: /* OUT (nn),A */
tStates += 11;
sim_brk_pend[0] = FALSE;
out(RAM_PP(PC), HIGH_REGISTER(AF));
break;
case 0xd4: /* CALL NC,nnnn */
CALLC(!TSTFLAG(C)); /* also updates tStates */
break;
case 0xd5: /* PUSH DE */
tStates += 11;
CHECK_BREAK_WORD(SP - 2);
PUSH(DE);
break;
case 0xd6: /* SUB nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
temp = RAM_PP(PC);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0xd7: /* RST 10H */
tStates += 11;
CHECK_BREAK_WORD(SP - 2);
PUSH(PC);
PCQ_ENTRY(PCX);
PC = 0x10;
break;
case 0xd8: /* RET C */
if (TSTFLAG(C)) {
CHECK_BREAK_WORD(SP);
PCQ_ENTRY(PCX);
POP(PC);
tStates += 11;
}
else {
sim_brk_pend[0] = FALSE;
tStates += 5;
}
break;
case 0xd9: /* EXX */
tStates += 4;
sim_brk_pend[0] = FALSE;
CHECK_CPU_8080;
temp = BC;
BC = BC1_S;
BC1_S = temp;
temp = DE;
DE = DE1_S;
DE1_S = temp;
temp = HL;
HL = HL1_S;
HL1_S = temp;
break;
case 0xda: /* JP C,nnnn */
sim_brk_pend[0] = FALSE;
JPC(TSTFLAG(C)); /* also updates tStates */
break;
case 0xdb: /* IN A,(nn) */
tStates += 11;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(AF, in(RAM_PP(PC)));
break;
case 0xdc: /* CALL C,nnnn */
CALLC(TSTFLAG(C)); /* also updates tStates */
break;
case 0xdd: /* DD prefix */
CHECK_CPU_8080;
switch (RAM_PP(PC)) {
case 0x09: /* ADD IX,BC */
tStates += 15;
sim_brk_pend[0] = FALSE;
IX &= ADDRMASK;
BC &= ADDRMASK;
sum = IX + BC;
AF = (AF & ~0x3b) | ((sum >> 8) & 0x28) | cbitsTable[(IX ^ BC ^ sum) >> 8];
IX = sum;
break;
case 0x19: /* ADD IX,DE */
tStates += 15;
sim_brk_pend[0] = FALSE;
IX &= ADDRMASK;
DE &= ADDRMASK;
sum = IX + DE;
AF = (AF & ~0x3b) | ((sum >> 8) & 0x28) | cbitsTable[(IX ^ DE ^ sum) >> 8];
IX = sum;
break;
case 0x21: /* LD IX,nnnn */
tStates += 14;
sim_brk_pend[0] = FALSE;
IX = GET_WORD(PC);
PC += 2;
break;
case 0x22: /* LD (nnnn),IX */
tStates += 20;
temp = GET_WORD(PC);
CHECK_BREAK_WORD(temp);
PutWORD(temp, IX);
PC += 2;
break;
case 0x23: /* INC IX */
tStates += 10;
sim_brk_pend[0] = FALSE;
++IX;
break;
case 0x24: /* INC IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
IX += 0x100;
AF = (AF & ~0xfe) | incZ80Table[HIGH_REGISTER(IX)];
break;
case 0x25: /* DEC IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
IX -= 0x100;
AF = (AF & ~0xfe) | decZ80Table[HIGH_REGISTER(IX)];
break;
case 0x26: /* LD IXH,nn */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(IX, RAM_PP(PC));
break;
case 0x29: /* ADD IX,IX */
tStates += 15;
sim_brk_pend[0] = FALSE;
IX &= ADDRMASK;
sum = IX + IX;
AF = (AF & ~0x3b) | cbitsDup16Table[sum >> 8];
IX = sum;
break;
case 0x2a: /* LD IX,(nnnn) */
tStates += 20;
temp = GET_WORD(PC);
CHECK_BREAK_WORD(temp);
IX = GET_WORD(temp);
PC += 2;
break;
case 0x2b: /* DEC IX */
tStates += 10;
sim_brk_pend[0] = FALSE;
--IX;
break;
case 0x2c: /* INC IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(IX) + 1;
SET_LOW_REGISTER(IX, temp);
AF = (AF & ~0xfe) | incZ80Table[temp];
break;
case 0x2d: /* DEC IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(IX) - 1;
SET_LOW_REGISTER(IX, temp);
AF = (AF & ~0xfe) | decZ80Table[temp & 0xff];
break;
case 0x2e: /* LD IXL,nn */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(IX, RAM_PP(PC));
break;
case 0x34: /* INC (IX+dd) */
tStates += 23;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
temp = GetBYTE(adr) + 1;
PutBYTE(adr, temp);
AF = (AF & ~0xfe) | incZ80Table[temp];
break;
case 0x35: /* DEC (IX+dd) */
tStates += 23;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
temp = GetBYTE(adr) - 1;
PutBYTE(adr, temp);
AF = (AF & ~0xfe) | decZ80Table[temp & 0xff];
break;
case 0x36: /* LD (IX+dd),nn */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, RAM_PP(PC));
break;
case 0x39: /* ADD IX,SP */
tStates += 15;
sim_brk_pend[0] = FALSE;
IX &= ADDRMASK;
SP &= ADDRMASK;
sum = IX + SP;
AF = (AF & ~0x3b) | ((sum >> 8) & 0x28) | cbitsTable[(IX ^ SP ^ sum) >> 8];
IX = sum;
break;
case 0x44: /* LD B,IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(BC, HIGH_REGISTER(IX));
break;
case 0x45: /* LD B,IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(BC, LOW_REGISTER(IX));
break;
case 0x46: /* LD B,(IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
SET_HIGH_REGISTER(BC, GetBYTE(adr));
break;
case 0x4c: /* LD C,IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(BC, HIGH_REGISTER(IX));
break;
case 0x4d: /* LD C,IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(BC, LOW_REGISTER(IX));
break;
case 0x4e: /* LD C,(IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
SET_LOW_REGISTER(BC, GetBYTE(adr));
break;
case 0x54: /* LD D,IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(DE, HIGH_REGISTER(IX));
break;
case 0x55: /* LD D,IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(DE, LOW_REGISTER(IX));
break;
case 0x56: /* LD D,(IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
SET_HIGH_REGISTER(DE, GetBYTE(adr));
break;
case 0x5c: /* LD E,IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(DE, HIGH_REGISTER(IX));
break;
case 0x5d: /* LD E,IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(DE, LOW_REGISTER(IX));
break;
case 0x5e: /* LD E,(IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
SET_LOW_REGISTER(DE, GetBYTE(adr));
break;
case 0x60: /* LD IXH,B */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(IX, HIGH_REGISTER(BC));
break;
case 0x61: /* LD IXH,C */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(IX, LOW_REGISTER(BC));
break;
case 0x62: /* LD IXH,D */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(IX, HIGH_REGISTER(DE));
break;
case 0x63: /* LD IXH,E */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(IX, LOW_REGISTER(DE));
break;
case 0x64: /* LD IXH,IXH */
tStates += 9;
sim_brk_pend[0] = FALSE; /* nop */
break;
case 0x65: /* LD IXH,IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(IX, LOW_REGISTER(IX));
break;
case 0x66: /* LD H,(IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
SET_HIGH_REGISTER(HL, GetBYTE(adr));
break;
case 0x67: /* LD IXH,A */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(IX, HIGH_REGISTER(AF));
break;
case 0x68: /* LD IXL,B */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(IX, HIGH_REGISTER(BC));
break;
case 0x69: /* LD IXL,C */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(IX, LOW_REGISTER(BC));
break;
case 0x6a: /* LD IXL,D */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(IX, HIGH_REGISTER(DE));
break;
case 0x6b: /* LD IXL,E */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(IX, LOW_REGISTER(DE));
break;
case 0x6c: /* LD IXL,IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(IX, HIGH_REGISTER(IX));
break;
case 0x6d: /* LD IXL,IXL */
tStates += 9;
sim_brk_pend[0] = FALSE; /* nop */
break;
case 0x6e: /* LD L,(IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
SET_LOW_REGISTER(HL, GetBYTE(adr));
break;
case 0x6f: /* LD IXL,A */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(IX, HIGH_REGISTER(AF));
break;
case 0x70: /* LD (IX+dd),B */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, HIGH_REGISTER(BC));
break;
case 0x71: /* LD (IX+dd),C */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, LOW_REGISTER(BC));
break;
case 0x72: /* LD (IX+dd),D */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, HIGH_REGISTER(DE));
break;
case 0x73: /* LD (IX+dd),E */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, LOW_REGISTER(DE));
break;
case 0x74: /* LD (IX+dd),H */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, HIGH_REGISTER(HL));
break;
case 0x75: /* LD (IX+dd),L */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, LOW_REGISTER(HL));
break;
case 0x77: /* LD (IX+dd),A */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, HIGH_REGISTER(AF));
break;
case 0x7c: /* LD A,IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(AF, HIGH_REGISTER(IX));
break;
case 0x7d: /* LD A,IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(AF, LOW_REGISTER(IX));
break;
case 0x7e: /* LD A,(IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
SET_HIGH_REGISTER(AF, GetBYTE(adr));
break;
case 0x84: /* ADD A,IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(IX);
acu = HIGH_REGISTER(AF);
sum = acu + temp;
AF = addTable[sum] | cbitsZ80Table[acu ^ temp ^ sum];
break;
case 0x85: /* ADD A,IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(IX);
acu = HIGH_REGISTER(AF);
sum = acu + temp;
AF = addTable[sum] | cbitsZ80Table[acu ^ temp ^ sum];
break;
case 0x86: /* ADD A,(IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
temp = GetBYTE(adr);
acu = HIGH_REGISTER(AF);
sum = acu + temp;
AF = addTable[sum] | cbitsZ80Table[acu ^ temp ^ sum];
break;
case 0x8c: /* ADC A,IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(IX);
acu = HIGH_REGISTER(AF);
sum = acu + temp + TSTFLAG(C);
AF = addTable[sum] | cbitsZ80Table[acu ^ temp ^ sum];
break;
case 0x8d: /* ADC A,IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(IX);
acu = HIGH_REGISTER(AF);
sum = acu + temp + TSTFLAG(C);
AF = addTable[sum] | cbitsZ80Table[acu ^ temp ^ sum];
break;
case 0x8e: /* ADC A,(IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
temp = GetBYTE(adr);
acu = HIGH_REGISTER(AF);
sum = acu + temp + TSTFLAG(C);
AF = addTable[sum] | cbitsZ80Table[acu ^ temp ^ sum];
break;
case 0x96: /* SUB (IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
temp = GetBYTE(adr);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
AF = addTable[sum & 0xff] | cbits2Z80Table[(acu ^ temp ^ sum) & 0x1ff];
break;
case 0x94: /* SUB IXH */
SETFLAG(C, 0);/* fall through, a bit less efficient but smaller code */
case 0x9c: /* SBC A,IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(IX);
acu = HIGH_REGISTER(AF);
sum = acu - temp - TSTFLAG(C);
AF = addTable[sum & 0xff] | cbits2Z80Table[(acu ^ temp ^ sum) & 0x1ff];
break;
case 0x95: /* SUB IXL */
SETFLAG(C, 0);/* fall through, a bit less efficient but smaller code */
case 0x9d: /* SBC A,IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(IX);
acu = HIGH_REGISTER(AF);
sum = acu - temp - TSTFLAG(C);
AF = addTable[sum & 0xff] | cbits2Z80Table[(acu ^ temp ^ sum) & 0x1ff];
break;
case 0x9e: /* SBC A,(IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
temp = GetBYTE(adr);
acu = HIGH_REGISTER(AF);
sum = acu - temp - TSTFLAG(C);
AF = addTable[sum & 0xff] | cbits2Z80Table[(acu ^ temp ^ sum) & 0x1ff];
break;
case 0xa4: /* AND IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
AF = andTable[((AF & IX) >> 8) & 0xff];
break;
case 0xa5: /* AND IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
AF = andTable[((AF >> 8) & IX) & 0xff];
break;
case 0xa6: /* AND (IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
AF = andTable[((AF >> 8) & GetBYTE(adr)) & 0xff];
break;
case 0xac: /* XOR IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF ^ IX) >> 8) & 0xff];
break;
case 0xad: /* XOR IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF >> 8) ^ IX) & 0xff];
break;
case 0xae: /* XOR (IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
AF = xororTable[((AF >> 8) ^ GetBYTE(adr)) & 0xff];
break;
case 0xb4: /* OR IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF | IX) >> 8) & 0xff];
break;
case 0xb5: /* OR IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF >> 8) | IX) & 0xff];
break;
case 0xb6: /* OR (IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
AF = xororTable[((AF >> 8) | GetBYTE(adr)) & 0xff];
break;
case 0xbc: /* CP IXH */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(IX);
AF = (AF & ~0x28) | (temp & 0x28);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
AF = (AF & ~0xff) | cpTable[sum & 0xff] | (temp & 0x28) |
cbits2Z80Table[(acu ^ temp ^ sum) & 0x1ff];
break;
case 0xbd: /* CP IXL */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(IX);
AF = (AF & ~0x28) | (temp & 0x28);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
AF = (AF & ~0xff) | cpTable[sum & 0xff] | (temp & 0x28) |
cbits2Z80Table[(acu ^ temp ^ sum) & 0x1ff];
break;
case 0xbe: /* CP (IX+dd) */
tStates += 19;
adr = IX + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
temp = GetBYTE(adr);
AF = (AF & ~0x28) | (temp & 0x28);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
AF = (AF & ~0xff) | cpTable[sum & 0xff] | (temp & 0x28) |
cbits2Z80Table[(acu ^ temp ^ sum) & 0x1ff];
break;
case 0xcb: /* CB prefix */
adr = IX + (int8) RAM_PP(PC);
switch ((op = GetBYTE(PC)) & 7) {
case 0:
sim_brk_pend[0] = FALSE;
++PC;
acu = HIGH_REGISTER(BC);
break;
case 1:
sim_brk_pend[0] = FALSE;
++PC;
acu = LOW_REGISTER(BC);
break;
case 2:
sim_brk_pend[0] = FALSE;
++PC;
acu = HIGH_REGISTER(DE);
break;
case 3:
sim_brk_pend[0] = FALSE;
++PC;
acu = LOW_REGISTER(DE);
break;
case 4:
sim_brk_pend[0] = FALSE;
++PC;
acu = HIGH_REGISTER(HL);
break;
case 5:
sim_brk_pend[0] = FALSE;
++PC;
acu = LOW_REGISTER(HL);
break;
case 6:
CHECK_BREAK_BYTE(adr);
++PC;
acu = GetBYTE(adr);
break;
case 7:
sim_brk_pend[0] = FALSE;
++PC;
acu = HIGH_REGISTER(AF);
break;
}
switch (op & 0xc0) {
case 0x00: /* shift/rotate */
tStates += 23;
switch (op & 0x38) {
case 0x00: /* RLC */
temp = (acu << 1) | (acu >> 7);
cbits = temp & 1;
goto cbshflg2;
case 0x08: /* RRC */
temp = (acu >> 1) | (acu << 7);
cbits = temp & 0x80;
goto cbshflg2;
case 0x10: /* RL */
temp = (acu << 1) | TSTFLAG(C);
cbits = acu & 0x80;
goto cbshflg2;
case 0x18: /* RR */
temp = (acu >> 1) | (TSTFLAG(C) << 7);
cbits = acu & 1;
goto cbshflg2;
case 0x20: /* SLA */
temp = acu << 1;
cbits = acu & 0x80;
goto cbshflg2;
case 0x28: /* SRA */
temp = (acu >> 1) | (acu & 0x80);
cbits = acu & 1;
goto cbshflg2;
case 0x30: /* SLIA */
temp = (acu << 1) | 1;
cbits = acu & 0x80;
goto cbshflg2;
case 0x38: /* SRL */
temp = acu >> 1;
cbits = acu & 1;
cbshflg2:
AF = (AF & ~0xff) | rotateShiftTable[temp & 0xff] | !!cbits;
/* !!cbits == 0 if cbits == 0 !!cbits == 1 if cbits > 0 */
}
break;
case 0x40: /* BIT */
tStates += 20;
if (acu & (1 << ((op >> 3) & 7)))
AF = (AF & ~0xfe) | 0x10 | (((op & 0x38) == 0x38) << 7);
else
AF = (AF & ~0xfe) | 0x54;
if ((op & 7) != 6)
AF |= (acu & 0x28);
temp = acu;
break;
case 0x80: /* RES */
tStates += 23;
temp = acu & ~(1 << ((op >> 3) & 7));
break;
case 0xc0: /* SET */
tStates += 23;
temp = acu | (1 << ((op >> 3) & 7));
break;
}
switch (op & 7) {
case 0:
SET_HIGH_REGISTER(BC, temp);
break;
case 1:
SET_LOW_REGISTER(BC, temp);
break;
case 2:
SET_HIGH_REGISTER(DE, temp);
break;
case 3:
SET_LOW_REGISTER(DE, temp);
break;
case 4:
SET_HIGH_REGISTER(HL, temp);
break;
case 5:
SET_LOW_REGISTER(HL, temp);
break;
case 6:
PutBYTE(adr, temp);
break;
case 7:
SET_HIGH_REGISTER(AF, temp);
break;
}
break;
case 0xe1: /* POP IX */
tStates += 14;
CHECK_BREAK_WORD(SP);
POP(IX);
break;
case 0xe3: /* EX (SP),IX */
tStates += 23;
CHECK_BREAK_WORD(SP);
temp = IX;
POP(IX);
PUSH(temp);
break;
case 0xe5: /* PUSH IX */
tStates += 15;
CHECK_BREAK_WORD(SP - 2);
PUSH(IX);
break;
case 0xe9: /* JP (IX) */
tStates += 8;
sim_brk_pend[0] = FALSE;
PCQ_ENTRY(PCX);
PC = IX;
break;
case 0xf9: /* LD SP,IX */
tStates += 10;
sim_brk_pend[0] = FALSE;
SP = IX;
break;
default: /* ignore DD */
sim_brk_pend[0] = FALSE;
CHECK_CPU_Z80;
PC--;
}
break;
case 0xde: /* SBC A,nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
temp = RAM_PP(PC);
acu = HIGH_REGISTER(AF);
sum = acu - temp - TSTFLAG(C);
cbits = acu ^ temp ^ sum;
AF = subTable[sum & 0xff] | cbitsTable[cbits & 0x1ff] | (SET_PV);
break;
case 0xdf: /* RST 18H */
tStates += 11;
CHECK_BREAK_WORD(SP - 2);
PUSH(PC);
PCQ_ENTRY(PCX);
PC = 0x18;
break;
case 0xe0: /* RET PO */
if (TSTFLAG(P)) {
sim_brk_pend[0] = FALSE;
tStates += 5;
}
else {
CHECK_BREAK_WORD(SP);
PCQ_ENTRY(PCX);
POP(PC);
tStates += 11;
}
break;
case 0xe1: /* POP HL */
tStates += 10;
CHECK_BREAK_WORD(SP);
POP(HL);
break;
case 0xe2: /* JP PO,nnnn */
sim_brk_pend[0] = FALSE;
JPC(!TSTFLAG(P)); /* also updates tStates */
break;
case 0xe3: /* EX (SP),HL */
tStates += 19;
CHECK_BREAK_WORD(SP);
temp = HL;
POP(HL);
PUSH(temp);
break;
case 0xe4: /* CALL PO,nnnn */
CALLC(!TSTFLAG(P)); /* also updates tStates */
break;
case 0xe5: /* PUSH HL */
tStates += 11;
CHECK_BREAK_WORD(SP - 2);
PUSH(HL);
break;
case 0xe6: /* AND nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
AF = andTable[((AF >> 8) & RAM_PP(PC)) & 0xff];
break;
case 0xe7: /* RST 20H */
tStates += 11;
CHECK_BREAK_WORD(SP - 2);
PUSH(PC);
PCQ_ENTRY(PCX);
PC = 0x20;
break;
case 0xe8: /* RET PE */
if (TSTFLAG(P)) {
CHECK_BREAK_WORD(SP);
PCQ_ENTRY(PCX);
POP(PC);
tStates += 11;
}
else {
sim_brk_pend[0] = FALSE;
tStates += 5;
}
break;
case 0xe9: /* JP (HL) */
tStates += 4;
sim_brk_pend[0] = FALSE;
PCQ_ENTRY(PCX);
PC = HL;
break;
case 0xea: /* JP PE,nnnn */
sim_brk_pend[0] = FALSE;
JPC(TSTFLAG(P)); /* also updates tStates */
break;
case 0xeb: /* EX DE,HL */
tStates += 4;
sim_brk_pend[0] = FALSE;
temp = HL;
HL = DE;
DE = temp;
break;
case 0xec: /* CALL PE,nnnn */
CALLC(TSTFLAG(P)); /* also updates tStates */
break;
case 0xed: /* ED prefix */
CHECK_CPU_8080;
switch (RAM_PP(PC)) {
case 0x40: /* IN B,(C) */
tStates += 12;
sim_brk_pend[0] = FALSE;
temp = in(LOW_REGISTER(BC));
SET_HIGH_REGISTER(BC, temp);
AF = (AF & ~0xfe) | rotateShiftTable[temp & 0xff];
break;
case 0x41: /* OUT (C),B */
tStates += 12;
sim_brk_pend[0] = FALSE;
out(LOW_REGISTER(BC), HIGH_REGISTER(BC));
break;
case 0x42: /* SBC HL,BC */
tStates += 15;
sim_brk_pend[0] = FALSE;
HL &= ADDRMASK;
BC &= ADDRMASK;
sum = HL - BC - TSTFLAG(C);
AF = (AF & ~0xff) | ((sum >> 8) & 0xa8) | (((sum & ADDRMASK) == 0) << 6) |
cbits2Z80Table[((HL ^ BC ^ sum) >> 8) & 0x1ff];
HL = sum;
break;
case 0x43: /* LD (nnnn),BC */
tStates += 20;
temp = GET_WORD(PC);
CHECK_BREAK_WORD(temp);
PutWORD(temp, BC);
PC += 2;
break;
case 0x44: /* NEG */
case 0x4C: /* NEG, unofficial */
case 0x54: /* NEG, unofficial */
case 0x5C: /* NEG, unofficial */
case 0x64: /* NEG, unofficial */
case 0x6C: /* NEG, unofficial */
case 0x74: /* NEG, unofficial */
case 0x7C: /* NEG, unofficial */
tStates += 8;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(AF);
AF = ((~(AF & 0xff00) + 1) & 0xff00); /* AF = (-(AF & 0xff00) & 0xff00); */
AF |= ((AF >> 8) & 0xa8) | (((AF & 0xff00) == 0) << 6) | negTable[temp];
break;
case 0x45: /* RETN */
case 0x55: /* RETN, unofficial */
case 0x5D: /* RETN, unofficial */
case 0x65: /* RETN, unofficial */
case 0x6D: /* RETN, unofficial */
case 0x75: /* RETN, unofficial */
case 0x7D: /* RETN, unofficial */
tStates += 14;
IFF_S |= IFF_S >> 1;
CHECK_BREAK_WORD(SP);
PCQ_ENTRY(PCX);
POP(PC);
break;
case 0x46: /* IM 0 */
tStates += 8;
sim_brk_pend[0] = FALSE;
/* interrupt mode 0 */
break;
case 0x47: /* LD I,A */
tStates += 9;
sim_brk_pend[0] = FALSE;
IR_S = (IR_S & 0xff) | (AF & ~0xff);
break;
case 0x48: /* IN C,(C) */
tStates += 12;
sim_brk_pend[0] = FALSE;
temp = in(LOW_REGISTER(BC));
SET_LOW_REGISTER(BC, temp);
AF = (AF & ~0xfe) | rotateShiftTable[temp & 0xff];
break;
case 0x49: /* OUT (C),C */
tStates += 12;
sim_brk_pend[0] = FALSE;
out(LOW_REGISTER(BC), LOW_REGISTER(BC));
break;
case 0x4a: /* ADC HL,BC */
tStates += 15;
sim_brk_pend[0] = FALSE;
HL &= ADDRMASK;
BC &= ADDRMASK;
sum = HL + BC + TSTFLAG(C);
AF = (AF & ~0xff) | ((sum >> 8) & 0xa8) | (((sum & ADDRMASK) == 0) << 6) |
cbitsZ80Table[(HL ^ BC ^ sum) >> 8];
HL = sum;
break;
case 0x4b: /* LD BC,(nnnn) */
tStates += 20;
temp = GET_WORD(PC);
CHECK_BREAK_WORD(temp);
BC = GET_WORD(temp);
PC += 2;
break;
case 0x4d: /* RETI */
tStates += 14;
IFF_S |= IFF_S >> 1;
CHECK_BREAK_WORD(SP);
PCQ_ENTRY(PCX);
POP(PC);
break;
case 0x4f: /* LD R,A */
tStates += 9;
sim_brk_pend[0] = FALSE;
IR_S = (IR_S & ~0xff) | ((AF >> 8) & 0xff);
break;
case 0x50: /* IN D,(C) */
tStates += 12;
sim_brk_pend[0] = FALSE;
temp = in(LOW_REGISTER(BC));
SET_HIGH_REGISTER(DE, temp);
AF = (AF & ~0xfe) | rotateShiftTable[temp & 0xff];
break;
case 0x51: /* OUT (C),D */
tStates += 12;
sim_brk_pend[0] = FALSE;
out(LOW_REGISTER(BC), HIGH_REGISTER(DE));
break;
case 0x52: /* SBC HL,DE */
tStates += 15;
sim_brk_pend[0] = FALSE;
HL &= ADDRMASK;
DE &= ADDRMASK;
sum = HL - DE - TSTFLAG(C);
AF = (AF & ~0xff) | ((sum >> 8) & 0xa8) | (((sum & ADDRMASK) == 0) << 6) |
cbits2Z80Table[((HL ^ DE ^ sum) >> 8) & 0x1ff];
HL = sum;
break;
case 0x53: /* LD (nnnn),DE */
tStates += 20;
temp = GET_WORD(PC);
CHECK_BREAK_WORD(temp);
PutWORD(temp, DE);
PC += 2;
break;
case 0x56: /* IM 1 */
tStates += 8;
sim_brk_pend[0] = FALSE;
/* interrupt mode 1 */
break;
case 0x57: /* LD A,I */
tStates += 9;
sim_brk_pend[0] = FALSE;
AF = (AF & 0x29) | (IR_S & ~0xff) | ((IR_S >> 8) & 0x80) | (((IR_S & ~0xff) == 0) << 6) | ((IFF_S & 2) << 1);
break;
case 0x58: /* IN E,(C) */
tStates += 12;
sim_brk_pend[0] = FALSE;
temp = in(LOW_REGISTER(BC));
SET_LOW_REGISTER(DE, temp);
AF = (AF & ~0xfe) | rotateShiftTable[temp & 0xff];
break;
case 0x59: /* OUT (C),E */
tStates += 12;
sim_brk_pend[0] = FALSE;
out(LOW_REGISTER(BC), LOW_REGISTER(DE));
break;
case 0x5a: /* ADC HL,DE */
tStates += 15;
sim_brk_pend[0] = FALSE;
HL &= ADDRMASK;
DE &= ADDRMASK;
sum = HL + DE + TSTFLAG(C);
AF = (AF & ~0xff) | ((sum >> 8) & 0xa8) | (((sum & ADDRMASK) == 0) << 6) |
cbitsZ80Table[(HL ^ DE ^ sum) >> 8];
HL = sum;
break;
case 0x5b: /* LD DE,(nnnn) */
tStates += 20;
temp = GET_WORD(PC);
CHECK_BREAK_WORD(temp);
DE = GET_WORD(temp);
PC += 2;
break;
case 0x5e: /* IM 2 */
tStates += 8;
sim_brk_pend[0] = FALSE;
/* interrupt mode 2 */
break;
case 0x5f: /* LD A,R */
tStates += 9;
sim_brk_pend[0] = FALSE;
AF = (AF & 0x29) | ((IR_S & 0xff) << 8) | (IR_S & 0x80) |
(((IR_S & 0xff) == 0) << 6) | ((IFF_S & 2) << 1);
break;
case 0x60: /* IN H,(C) */
tStates += 12;
sim_brk_pend[0] = FALSE;
temp = in(LOW_REGISTER(BC));
SET_HIGH_REGISTER(HL, temp);
AF = (AF & ~0xfe) | rotateShiftTable[temp & 0xff];
break;
case 0x61: /* OUT (C),H */
tStates += 12;
sim_brk_pend[0] = FALSE;
out(LOW_REGISTER(BC), HIGH_REGISTER(HL));
break;
case 0x62: /* SBC HL,HL */
tStates += 15;
sim_brk_pend[0] = FALSE;
HL &= ADDRMASK;
sum = HL - HL - TSTFLAG(C);
AF = (AF & ~0xff) | (((sum & ADDRMASK) == 0) << 6) |
cbits2Z80DupTable[(sum >> 8) & 0x1ff];
HL = sum;
break;
case 0x63: /* LD (nnnn),HL */
tStates += 20;
temp = GET_WORD(PC);
CHECK_BREAK_WORD(temp);
PutWORD(temp, HL);
PC += 2;
break;
case 0x67: /* RRD */
tStates += 18;
sim_brk_pend[0] = FALSE;
temp = GetBYTE(HL);
acu = HIGH_REGISTER(AF);
PutBYTE(HL, HIGH_DIGIT(temp) | (LOW_DIGIT(acu) << 4));
AF = rrdrldTable[(acu & 0xf0) | LOW_DIGIT(temp)] | (AF & 1);
break;
case 0x68: /* IN L,(C) */
tStates += 12;
sim_brk_pend[0] = FALSE;
temp = in(LOW_REGISTER(BC));
SET_LOW_REGISTER(HL, temp);
AF = (AF & ~0xfe) | rotateShiftTable[temp & 0xff];
break;
case 0x69: /* OUT (C),L */
tStates += 12;
sim_brk_pend[0] = FALSE;
out(LOW_REGISTER(BC), LOW_REGISTER(HL));
break;
case 0x6a: /* ADC HL,HL */
tStates += 15;
sim_brk_pend[0] = FALSE;
HL &= ADDRMASK;
sum = HL + HL + TSTFLAG(C);
AF = (AF & ~0xff) | (((sum & ADDRMASK) == 0) << 6) |
cbitsZ80DupTable[sum >> 8];
HL = sum;
break;
case 0x6b: /* LD HL,(nnnn) */
tStates += 20;
temp = GET_WORD(PC);
CHECK_BREAK_WORD(temp);
HL = GET_WORD(temp);
PC += 2;
break;
case 0x6f: /* RLD */
tStates += 18;
sim_brk_pend[0] = FALSE;
temp = GetBYTE(HL);
acu = HIGH_REGISTER(AF);
PutBYTE(HL, (LOW_DIGIT(temp) << 4) | LOW_DIGIT(acu));
AF = rrdrldTable[(acu & 0xf0) | HIGH_DIGIT(temp)] | (AF & 1);
break;
case 0x70: /* IN (C) */
tStates += 12;
sim_brk_pend[0] = FALSE;
temp = in(LOW_REGISTER(BC));
SET_LOW_REGISTER(temp, temp);
AF = (AF & ~0xfe) | rotateShiftTable[temp & 0xff];
break;
case 0x71: /* OUT (C),0 */
tStates += 12;
sim_brk_pend[0] = FALSE;
out(LOW_REGISTER(BC), 0);
break;
case 0x72: /* SBC HL,SP */
tStates += 15;
sim_brk_pend[0] = FALSE;
HL &= ADDRMASK;
SP &= ADDRMASK;
sum = HL - SP - TSTFLAG(C);
AF = (AF & ~0xff) | ((sum >> 8) & 0xa8) | (((sum & ADDRMASK) == 0) << 6) |
cbits2Z80Table[((HL ^ SP ^ sum) >> 8) & 0x1ff];
HL = sum;
break;
case 0x73: /* LD (nnnn),SP */
tStates += 20;
temp = GET_WORD(PC);
CHECK_BREAK_WORD(temp);
PutWORD(temp, SP);
PC += 2;
break;
case 0x78: /* IN A,(C) */
tStates += 12;
sim_brk_pend[0] = FALSE;
temp = in(LOW_REGISTER(BC));
SET_HIGH_REGISTER(AF, temp);
AF = (AF & ~0xfe) | rotateShiftTable[temp & 0xff];
break;
case 0x79: /* OUT (C),A */
tStates += 12;
sim_brk_pend[0] = FALSE;
out(LOW_REGISTER(BC), HIGH_REGISTER(AF));
break;
case 0x7a: /* ADC HL,SP */
tStates += 15;
sim_brk_pend[0] = FALSE;
HL &= ADDRMASK;
SP &= ADDRMASK;
sum = HL + SP + TSTFLAG(C);
AF = (AF & ~0xff) | ((sum >> 8) & 0xa8) | (((sum & ADDRMASK) == 0) << 6) |
cbitsZ80Table[(HL ^ SP ^ sum) >> 8];
HL = sum;
break;
case 0x7b: /* LD SP,(nnnn) */
tStates += 20;
temp = GET_WORD(PC);
CHECK_BREAK_WORD(temp);
SP = GET_WORD(temp);
PC += 2;
break;
case 0xa0: /* LDI */
tStates += 16;
CHECK_BREAK_TWO_BYTES(HL, DE);
acu = RAM_PP(HL);
PUT_BYTE_PP(DE, acu);
acu += HIGH_REGISTER(AF);
AF = (AF & ~0x3e) | (acu & 8) | ((acu & 2) << 4) |
(((--BC & ADDRMASK) != 0) << 2);
break;
case 0xa1: /* CPI */
tStates += 16;
CHECK_BREAK_BYTE(HL);
acu = HIGH_REGISTER(AF);
temp = RAM_PP(HL);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = (AF & ~0xfe) | (sum & 0x80) | (!(sum & 0xff) << 6) |
(((sum - ((cbits & 16) >> 4)) & 2) << 4) | (cbits & 16) |
((sum - ((cbits >> 4) & 1)) & 8) |
((--BC & ADDRMASK) != 0) << 2 | 2;
if ((sum & 15) == 8 && (cbits & 16) != 0)
AF &= ~8;
break;
/* SF, ZF, YF, XF flags are affected by decreasing register B, as in DEC B.
NF flag A is copy of bit 7 of the value read from or written to an I/O port.
INI/INIR/IND/INDR use the C flag in stead of the L register. There is a
catch though, because not the value of C is used, but C + 1 if it's INI/INIR or
C - 1 if it's IND/INDR. So, first of all INI/INIR:
HF and CF Both set if ((HL) + ((C + 1) & 255) > 255)
PF The parity of (((HL) + ((C + 1) & 255)) & 7) xor B) */
case 0xa2: /* INI */
tStates += 16;
CHECK_BREAK_BYTE(HL);
acu = in(LOW_REGISTER(BC));
PutBYTE(HL, acu);
++HL;
temp = HIGH_REGISTER(BC);
BC -= 0x100;
INOUTFLAGS_NONZERO((LOW_REGISTER(BC) + 1) & 0xff);
break;
/* SF, ZF, YF, XF flags are affected by decreasing register B, as in DEC B.
NF flag A is copy of bit 7 of the value read from or written to an I/O port.
And now the for OUTI/OTIR/OUTD/OTDR instructions. Take state of the L
after the increment or decrement of HL; add the value written to the I/O port
to; call that k for now. If k > 255, then the CF and HF flags are set. The PF
flags is set like the parity of k bitwise and'ed with 7, bitwise xor'ed with B.
HF and CF Both set if ((HL) + L > 255)
PF The parity of ((((HL) + L) & 7) xor B) */
case 0xa3: /* OUTI */
tStates += 16;
CHECK_BREAK_BYTE(HL);
acu = GetBYTE(HL);
out(LOW_REGISTER(BC), acu);
++HL;
temp = HIGH_REGISTER(BC);
BC -= 0x100;
INOUTFLAGS_NONZERO(LOW_REGISTER(HL));
break;
case 0xa8: /* LDD */
tStates += 16;
CHECK_BREAK_TWO_BYTES(HL, DE);
acu = RAM_MM(HL);
PUT_BYTE_MM(DE, acu);
acu += HIGH_REGISTER(AF);
AF = (AF & ~0x3e) | (acu & 8) | ((acu & 2) << 4) |
(((--BC & ADDRMASK) != 0) << 2);
break;
case 0xa9: /* CPD */
tStates += 16;
CHECK_BREAK_BYTE(HL);
acu = HIGH_REGISTER(AF);
temp = RAM_MM(HL);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = (AF & ~0xfe) | (sum & 0x80) | (!(sum & 0xff) << 6) |
(((sum - ((cbits & 16) >> 4)) & 2) << 4) | (cbits & 16) |
((sum - ((cbits >> 4) & 1)) & 8) |
((--BC & ADDRMASK) != 0) << 2 | 2;
if ((sum & 15) == 8 && (cbits & 16) != 0)
AF &= ~8;
break;
/* SF, ZF, YF, XF flags are affected by decreasing register B, as in DEC B.
NF flag A is copy of bit 7 of the value read from or written to an I/O port.
INI/INIR/IND/INDR use the C flag in stead of the L register. There is a
catch though, because not the value of C is used, but C + 1 if it's INI/INIR or
C - 1 if it's IND/INDR. And last IND/INDR:
HF and CF Both set if ((HL) + ((C - 1) & 255) > 255)
PF The parity of (((HL) + ((C - 1) & 255)) & 7) xor B) */
case 0xaa: /* IND */
tStates += 16;
CHECK_BREAK_BYTE(HL);
acu = in(LOW_REGISTER(BC));
PutBYTE(HL, acu);
--HL;
temp = HIGH_REGISTER(BC);
BC -= 0x100;
INOUTFLAGS_NONZERO((LOW_REGISTER(BC) - 1) & 0xff);
break;
case 0xab: /* OUTD */
tStates += 16;
CHECK_BREAK_BYTE(HL);
acu = GetBYTE(HL);
out(LOW_REGISTER(BC), acu);
--HL;
temp = HIGH_REGISTER(BC);
BC -= 0x100;
INOUTFLAGS_NONZERO(LOW_REGISTER(HL));
break;
case 0xb0: /* LDIR */
tStates -= 5;
BC &= ADDRMASK;
if (BC == 0)
BC = 0x10000;
do {
tStates += 21;
CHECK_BREAK_TWO_BYTES(HL, DE);
acu = RAM_PP(HL);
PUT_BYTE_PP(DE, acu);
} while (--BC);
acu += HIGH_REGISTER(AF);
AF = (AF & ~0x3e) | (acu & 8) | ((acu & 2) << 4);
break;
case 0xb1: /* CPIR */
tStates -= 5;
acu = HIGH_REGISTER(AF);
BC &= ADDRMASK;
if (BC == 0)
BC = 0x10000;
do {
tStates += 21;
CHECK_BREAK_BYTE(HL);
temp = RAM_PP(HL);
op = --BC != 0;
sum = acu - temp;
} while (op && sum != 0);
cbits = acu ^ temp ^ sum;
AF = (AF & ~0xfe) | (sum & 0x80) | (!(sum & 0xff) << 6) |
(((sum - ((cbits & 16) >> 4)) & 2) << 4) |
(cbits & 16) | ((sum - ((cbits >> 4) & 1)) & 8) |
op << 2 | 2;
if ((sum & 15) == 8 && (cbits & 16) != 0)
AF &= ~8;
break;
case 0xb2: /* INIR */
tStates -= 5;
temp = HIGH_REGISTER(BC);
if (temp == 0)
temp = 0x100;
do {
tStates += 21;
CHECK_BREAK_BYTE(HL);
acu = in(LOW_REGISTER(BC));
PutBYTE(HL, acu);
++HL;
} while (--temp);
temp = HIGH_REGISTER(BC);
SET_HIGH_REGISTER(BC, 0);
INOUTFLAGS_ZERO((LOW_REGISTER(BC) + 1) & 0xff);
break;
case 0xb3: /* OTIR */
tStates -= 5;
temp = HIGH_REGISTER(BC);
if (temp == 0)
temp = 0x100;
do {
tStates += 21;
CHECK_BREAK_BYTE(HL);
acu = GetBYTE(HL);
out(LOW_REGISTER(BC), acu);
++HL;
} while (--temp);
temp = HIGH_REGISTER(BC);
SET_HIGH_REGISTER(BC, 0);
INOUTFLAGS_ZERO(LOW_REGISTER(HL));
break;
case 0xb8: /* LDDR */
tStates -= 5;
BC &= ADDRMASK;
if (BC == 0)
BC = 0x10000;
do {
tStates += 21;
CHECK_BREAK_TWO_BYTES(HL, DE);
acu = RAM_MM(HL);
PUT_BYTE_MM(DE, acu);
} while (--BC);
acu += HIGH_REGISTER(AF);
AF = (AF & ~0x3e) | (acu & 8) | ((acu & 2) << 4);
break;
case 0xb9: /* CPDR */
tStates -= 5;
acu = HIGH_REGISTER(AF);
BC &= ADDRMASK;
if (BC == 0)
BC = 0x10000;
do {
tStates += 21;
CHECK_BREAK_BYTE(HL);
temp = RAM_MM(HL);
op = --BC != 0;
sum = acu - temp;
} while (op && sum != 0);
cbits = acu ^ temp ^ sum;
AF = (AF & ~0xfe) | (sum & 0x80) | (!(sum & 0xff) << 6) |
(((sum - ((cbits & 16) >> 4)) & 2) << 4) |
(cbits & 16) | ((sum - ((cbits >> 4) & 1)) & 8) |
op << 2 | 2;
if ((sum & 15) == 8 && (cbits & 16) != 0)
AF &= ~8;
break;
case 0xba: /* INDR */
tStates -= 5;
temp = HIGH_REGISTER(BC);
if (temp == 0)
temp = 0x100;
do {
tStates += 21;
CHECK_BREAK_BYTE(HL);
acu = in(LOW_REGISTER(BC));
PutBYTE(HL, acu);
--HL;
} while (--temp);
temp = HIGH_REGISTER(BC);
SET_HIGH_REGISTER(BC, 0);
INOUTFLAGS_ZERO((LOW_REGISTER(BC) - 1) & 0xff);
break;
case 0xbb: /* OTDR */
tStates -= 5;
temp = HIGH_REGISTER(BC);
if (temp == 0)
temp = 0x100;
do {
tStates += 21;
CHECK_BREAK_BYTE(HL);
acu = GetBYTE(HL);
out(LOW_REGISTER(BC), acu);
--HL;
} while (--temp);
temp = HIGH_REGISTER(BC);
SET_HIGH_REGISTER(BC, 0);
INOUTFLAGS_ZERO(LOW_REGISTER(HL));
break;
default: /* ignore ED and following byte */
sim_brk_pend[0] = FALSE;
CHECK_CPU_Z80;
}
break;
case 0xee: /* XOR nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF >> 8) ^ RAM_PP(PC)) & 0xff];
break;
case 0xef: /* RST 28H */
tStates += 11;
CHECK_BREAK_WORD(SP - 2);
PUSH(PC);
PCQ_ENTRY(PCX);
PC = 0x28;
break;
case 0xf0: /* RET P */
if (TSTFLAG(S)) {
sim_brk_pend[0] = FALSE;
tStates += 5;
}
else {
CHECK_BREAK_WORD(SP);
PCQ_ENTRY(PCX);
POP(PC);
tStates += 11;
}
break;
case 0xf1: /* POP AF */
tStates += 10;
CHECK_BREAK_WORD(SP);
POP(AF);
break;
case 0xf2: /* JP P,nnnn */
sim_brk_pend[0] = FALSE;
JPC(!TSTFLAG(S)); /* also updates tStates */
break;
case 0xf3: /* DI */
tStates += 4;
sim_brk_pend[0] = FALSE;
IFF_S = 0;
break;
case 0xf4: /* CALL P,nnnn */
CALLC(!TSTFLAG(S)); /* also updates tStates */
break;
case 0xf5: /* PUSH AF */
tStates += 11;
CHECK_BREAK_WORD(SP - 2);
PUSH(AF);
break;
case 0xf6: /* OR nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF >> 8) | RAM_PP(PC)) & 0xff];
break;
case 0xf7: /* RST 30H */
tStates += 11;
CHECK_BREAK_WORD(SP - 2);
PUSH(PC);
PCQ_ENTRY(PCX);
PC = 0x30;
break;
case 0xf8: /* RET M */
if (TSTFLAG(S)) {
CHECK_BREAK_WORD(SP);
PCQ_ENTRY(PCX);
POP(PC);
tStates += 11;
}
else {
sim_brk_pend[0] = FALSE;
tStates += 5;
}
break;
case 0xf9: /* LD SP,HL */
tStates += 6;
sim_brk_pend[0] = FALSE;
SP = HL;
break;
case 0xfa: /* JP M,nnnn */
sim_brk_pend[0] = FALSE;
JPC(TSTFLAG(S)); /* also updates tStates */
break;
case 0xfb: /* EI */
tStates += 4;
sim_brk_pend[0] = FALSE;
IFF_S = 3;
break;
case 0xfc: /* CALL M,nnnn */
CALLC(TSTFLAG(S)); /* also updates tStates */
break;
case 0xfd: /* FD prefix */
CHECK_CPU_8080;
switch (RAM_PP(PC)) {
case 0x09: /* ADD IY,BC */
tStates += 15;
sim_brk_pend[0] = FALSE;
IY &= ADDRMASK;
BC &= ADDRMASK;
sum = IY + BC;
AF = (AF & ~0x3b) | ((sum >> 8) & 0x28) | cbitsTable[(IY ^ BC ^ sum) >> 8];
IY = sum;
break;
case 0x19: /* ADD IY,DE */
tStates += 15;
sim_brk_pend[0] = FALSE;
IY &= ADDRMASK;
DE &= ADDRMASK;
sum = IY + DE;
AF = (AF & ~0x3b) | ((sum >> 8) & 0x28) | cbitsTable[(IY ^ DE ^ sum) >> 8];
IY = sum;
break;
case 0x21: /* LD IY,nnnn */
tStates += 14;
sim_brk_pend[0] = FALSE;
IY = GET_WORD(PC);
PC += 2;
break;
case 0x22: /* LD (nnnn),IY */
tStates += 20;
temp = GET_WORD(PC);
CHECK_BREAK_WORD(temp);
PutWORD(temp, IY);
PC += 2;
break;
case 0x23: /* INC IY */
tStates += 10;
sim_brk_pend[0] = FALSE;
++IY;
break;
case 0x24: /* INC IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
IY += 0x100;
AF = (AF & ~0xfe) | incZ80Table[HIGH_REGISTER(IY)];
break;
case 0x25: /* DEC IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
IY -= 0x100;
AF = (AF & ~0xfe) | decZ80Table[HIGH_REGISTER(IY)];
break;
case 0x26: /* LD IYH,nn */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(IY, RAM_PP(PC));
break;
case 0x29: /* ADD IY,IY */
tStates += 15;
sim_brk_pend[0] = FALSE;
IY &= ADDRMASK;
sum = IY + IY;
AF = (AF & ~0x3b) | cbitsDup16Table[sum >> 8];
IY = sum;
break;
case 0x2a: /* LD IY,(nnnn) */
tStates += 20;
temp = GET_WORD(PC);
CHECK_BREAK_WORD(temp);
IY = GET_WORD(temp);
PC += 2;
break;
case 0x2b: /* DEC IY */
tStates += 10;
sim_brk_pend[0] = FALSE;
--IY;
break;
case 0x2c: /* INC IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(IY) + 1;
SET_LOW_REGISTER(IY, temp);
AF = (AF & ~0xfe) | incZ80Table[temp];
break;
case 0x2d: /* DEC IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(IY) - 1;
SET_LOW_REGISTER(IY, temp);
AF = (AF & ~0xfe) | decZ80Table[temp & 0xff];
break;
case 0x2e: /* LD IYL,nn */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(IY, RAM_PP(PC));
break;
case 0x34: /* INC (IY+dd) */
tStates += 23;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
temp = GetBYTE(adr) + 1;
PutBYTE(adr, temp);
AF = (AF & ~0xfe) | incZ80Table[temp];
break;
case 0x35: /* DEC (IY+dd) */
tStates += 23;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
temp = GetBYTE(adr) - 1;
PutBYTE(adr, temp);
AF = (AF & ~0xfe) | decZ80Table[temp & 0xff];
break;
case 0x36: /* LD (IY+dd),nn */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, RAM_PP(PC));
break;
case 0x39: /* ADD IY,SP */
tStates += 15;
sim_brk_pend[0] = FALSE;
IY &= ADDRMASK;
SP &= ADDRMASK;
sum = IY + SP;
AF = (AF & ~0x3b) | ((sum >> 8) & 0x28) | cbitsTable[(IY ^ SP ^ sum) >> 8];
IY = sum;
break;
case 0x44: /* LD B,IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(BC, HIGH_REGISTER(IY));
break;
case 0x45: /* LD B,IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(BC, LOW_REGISTER(IY));
break;
case 0x46: /* LD B,(IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
SET_HIGH_REGISTER(BC, GetBYTE(adr));
break;
case 0x4c: /* LD C,IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(BC, HIGH_REGISTER(IY));
break;
case 0x4d: /* LD C,IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(BC, LOW_REGISTER(IY));
break;
case 0x4e: /* LD C,(IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
SET_LOW_REGISTER(BC, GetBYTE(adr));
break;
case 0x54: /* LD D,IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(DE, HIGH_REGISTER(IY));
break;
case 0x55: /* LD D,IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(DE, LOW_REGISTER(IY));
break;
case 0x56: /* LD D,(IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
SET_HIGH_REGISTER(DE, GetBYTE(adr));
break;
case 0x5c: /* LD E,IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(DE, HIGH_REGISTER(IY));
break;
case 0x5d: /* LD E,IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(DE, LOW_REGISTER(IY));
break;
case 0x5e: /* LD E,(IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
SET_LOW_REGISTER(DE, GetBYTE(adr));
break;
case 0x60: /* LD IYH,B */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(IY, HIGH_REGISTER(BC));
break;
case 0x61: /* LD IYH,C */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(IY, LOW_REGISTER(BC));
break;
case 0x62: /* LD IYH,D */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(IY, HIGH_REGISTER(DE));
break;
case 0x63: /* LD IYH,E */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(IY, LOW_REGISTER(DE));
break;
case 0x64: /* LD IYH,IYH */
tStates += 9;
sim_brk_pend[0] = FALSE; /* nop */
break;
case 0x65: /* LD IYH,IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(IY, LOW_REGISTER(IY));
break;
case 0x66: /* LD H,(IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
SET_HIGH_REGISTER(HL, GetBYTE(adr));
break;
case 0x67: /* LD IYH,A */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(IY, HIGH_REGISTER(AF));
break;
case 0x68: /* LD IYL,B */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(IY, HIGH_REGISTER(BC));
break;
case 0x69: /* LD IYL,C */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(IY, LOW_REGISTER(BC));
break;
case 0x6a: /* LD IYL,D */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(IY, HIGH_REGISTER(DE));
break;
case 0x6b: /* LD IYL,E */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(IY, LOW_REGISTER(DE));
break;
case 0x6c: /* LD IYL,IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(IY, HIGH_REGISTER(IY));
break;
case 0x6d: /* LD IYL,IYL */
tStates += 9;
sim_brk_pend[0] = FALSE; /* nop */
break;
case 0x6e: /* LD L,(IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
SET_LOW_REGISTER(HL, GetBYTE(adr));
break;
case 0x6f: /* LD IYL,A */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_LOW_REGISTER(IY, HIGH_REGISTER(AF));
break;
case 0x70: /* LD (IY+dd),B */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, HIGH_REGISTER(BC));
break;
case 0x71: /* LD (IY+dd),C */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, LOW_REGISTER(BC));
break;
case 0x72: /* LD (IY+dd),D */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, HIGH_REGISTER(DE));
break;
case 0x73: /* LD (IY+dd),E */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, LOW_REGISTER(DE));
break;
case 0x74: /* LD (IY+dd),H */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, HIGH_REGISTER(HL));
break;
case 0x75: /* LD (IY+dd),L */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, LOW_REGISTER(HL));
break;
case 0x77: /* LD (IY+dd),A */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
PutBYTE(adr, HIGH_REGISTER(AF));
break;
case 0x7c: /* LD A,IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(AF, HIGH_REGISTER(IY));
break;
case 0x7d: /* LD A,IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
SET_HIGH_REGISTER(AF, LOW_REGISTER(IY));
break;
case 0x7e: /* LD A,(IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
SET_HIGH_REGISTER(AF, GetBYTE(adr));
break;
case 0x84: /* ADD A,IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(IY);
acu = HIGH_REGISTER(AF);
sum = acu + temp;
AF = addTable[sum] | cbitsZ80Table[acu ^ temp ^ sum];
break;
case 0x85: /* ADD A,IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(IY);
acu = HIGH_REGISTER(AF);
sum = acu + temp;
AF = addTable[sum] | cbitsZ80Table[acu ^ temp ^ sum];
break;
case 0x86: /* ADD A,(IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
temp = GetBYTE(adr);
acu = HIGH_REGISTER(AF);
sum = acu + temp;
AF = addTable[sum] | cbitsZ80Table[acu ^ temp ^ sum];
break;
case 0x8c: /* ADC A,IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(IY);
acu = HIGH_REGISTER(AF);
sum = acu + temp + TSTFLAG(C);
AF = addTable[sum] | cbitsZ80Table[acu ^ temp ^ sum];
break;
case 0x8d: /* ADC A,IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(IY);
acu = HIGH_REGISTER(AF);
sum = acu + temp + TSTFLAG(C);
AF = addTable[sum] | cbitsZ80Table[acu ^ temp ^ sum];
break;
case 0x8e: /* ADC A,(IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
temp = GetBYTE(adr);
acu = HIGH_REGISTER(AF);
sum = acu + temp + TSTFLAG(C);
AF = addTable[sum] | cbitsZ80Table[acu ^ temp ^ sum];
break;
case 0x96: /* SUB (IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
temp = GetBYTE(adr);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
AF = addTable[sum & 0xff] | cbits2Z80Table[(acu ^ temp ^ sum) & 0x1ff];
break;
case 0x94: /* SUB IYH */
SETFLAG(C, 0);/* fall through, a bit less efficient but smaller code */
case 0x9c: /* SBC A,IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(IY);
acu = HIGH_REGISTER(AF);
sum = acu - temp - TSTFLAG(C);
AF = addTable[sum & 0xff] | cbits2Z80Table[(acu ^ temp ^ sum) & 0x1ff];
break;
case 0x95: /* SUB IYL */
SETFLAG(C, 0);/* fall through, a bit less efficient but smaller code */
case 0x9d: /* SBC A,IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(IY);
acu = HIGH_REGISTER(AF);
sum = acu - temp - TSTFLAG(C);
AF = addTable[sum & 0xff] | cbits2Z80Table[(acu ^ temp ^ sum) & 0x1ff];
break;
case 0x9e: /* SBC A,(IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
temp = GetBYTE(adr);
acu = HIGH_REGISTER(AF);
sum = acu - temp - TSTFLAG(C);
AF = addTable[sum & 0xff] | cbits2Z80Table[(acu ^ temp ^ sum) & 0x1ff];
break;
case 0xa4: /* AND IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
AF = andTable[((AF & IY) >> 8) & 0xff];
break;
case 0xa5: /* AND IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
AF = andTable[((AF >> 8) & IY) & 0xff];
break;
case 0xa6: /* AND (IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
AF = andTable[((AF >> 8) & GetBYTE(adr)) & 0xff];
break;
case 0xac: /* XOR IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF ^ IY) >> 8) & 0xff];
break;
case 0xad: /* XOR IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF >> 8) ^ IY) & 0xff];
break;
case 0xae: /* XOR (IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
AF = xororTable[((AF >> 8) ^ GetBYTE(adr)) & 0xff];
break;
case 0xb4: /* OR IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF | IY) >> 8) & 0xff];
break;
case 0xb5: /* OR IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
AF = xororTable[((AF >> 8) | IY) & 0xff];
break;
case 0xb6: /* OR (IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
AF = xororTable[((AF >> 8) | GetBYTE(adr)) & 0xff];
break;
case 0xbc: /* CP IYH */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = HIGH_REGISTER(IY);
AF = (AF & ~0x28) | (temp & 0x28);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
AF = (AF & ~0xff) | cpTable[sum & 0xff] | (temp & 0x28) |
cbits2Z80Table[(acu ^ temp ^ sum) & 0x1ff];
break;
case 0xbd: /* CP IYL */
tStates += 9;
sim_brk_pend[0] = FALSE;
temp = LOW_REGISTER(IY);
AF = (AF & ~0x28) | (temp & 0x28);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
AF = (AF & ~0xff) | cpTable[sum & 0xff] | (temp & 0x28) |
cbits2Z80Table[(acu ^ temp ^ sum) & 0x1ff];
break;
case 0xbe: /* CP (IY+dd) */
tStates += 19;
adr = IY + (int8) RAM_PP(PC);
CHECK_BREAK_BYTE(adr);
temp = GetBYTE(adr);
AF = (AF & ~0x28) | (temp & 0x28);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
AF = (AF & ~0xff) | cpTable[sum & 0xff] | (temp & 0x28) |
cbits2Z80Table[(acu ^ temp ^ sum) & 0x1ff];
break;
case 0xcb: /* CB prefix */
adr = IY + (int8) RAM_PP(PC);
switch ((op = GetBYTE(PC)) & 7) {
case 0:
sim_brk_pend[0] = FALSE;
++PC;
acu = HIGH_REGISTER(BC);
break;
case 1:
sim_brk_pend[0] = FALSE;
++PC;
acu = LOW_REGISTER(BC);
break;
case 2:
sim_brk_pend[0] = FALSE;
++PC;
acu = HIGH_REGISTER(DE);
break;
case 3:
sim_brk_pend[0] = FALSE;
++PC;
acu = LOW_REGISTER(DE);
break;
case 4:
sim_brk_pend[0] = FALSE;
++PC;
acu = HIGH_REGISTER(HL);
break;
case 5:
sim_brk_pend[0] = FALSE;
++PC;
acu = LOW_REGISTER(HL);
break;
case 6:
CHECK_BREAK_BYTE(adr);
++PC;
acu = GetBYTE(adr);
break;
case 7:
sim_brk_pend[0] = FALSE;
++PC;
acu = HIGH_REGISTER(AF);
break;
}
switch (op & 0xc0) {
case 0x00: /* shift/rotate */
tStates += 23;
switch (op & 0x38) {
case 0x00: /* RLC */
temp = (acu << 1) | (acu >> 7);
cbits = temp & 1;
goto cbshflg3;
case 0x08: /* RRC */
temp = (acu >> 1) | (acu << 7);
cbits = temp & 0x80;
goto cbshflg3;
case 0x10: /* RL */
temp = (acu << 1) | TSTFLAG(C);
cbits = acu & 0x80;
goto cbshflg3;
case 0x18: /* RR */
temp = (acu >> 1) | (TSTFLAG(C) << 7);
cbits = acu & 1;
goto cbshflg3;
case 0x20: /* SLA */
temp = acu << 1;
cbits = acu & 0x80;
goto cbshflg3;
case 0x28: /* SRA */
temp = (acu >> 1) | (acu & 0x80);
cbits = acu & 1;
goto cbshflg3;
case 0x30: /* SLIA */
temp = (acu << 1) | 1;
cbits = acu & 0x80;
goto cbshflg3;
case 0x38: /* SRL */
temp = acu >> 1;
cbits = acu & 1;
cbshflg3:
AF = (AF & ~0xff) | rotateShiftTable[temp & 0xff] | !!cbits;
/* !!cbits == 0 if cbits == 0 !!cbits == 1 if cbits > 0 */
}
break;
case 0x40: /* BIT */
tStates += 20;
if (acu & (1 << ((op >> 3) & 7)))
AF = (AF & ~0xfe) | 0x10 | (((op & 0x38) == 0x38) << 7);
else
AF = (AF & ~0xfe) | 0x54;
if ((op & 7) != 6)
AF |= (acu & 0x28);
temp = acu;
break;
case 0x80: /* RES */
tStates += 23;
temp = acu & ~(1 << ((op >> 3) & 7));
break;
case 0xc0: /* SET */
tStates += 23;
temp = acu | (1 << ((op >> 3) & 7));
break;
}
switch (op & 7) {
case 0:
SET_HIGH_REGISTER(BC, temp);
break;
case 1:
SET_LOW_REGISTER(BC, temp);
break;
case 2:
SET_HIGH_REGISTER(DE, temp);
break;
case 3:
SET_LOW_REGISTER(DE, temp);
break;
case 4:
SET_HIGH_REGISTER(HL, temp);
break;
case 5:
SET_LOW_REGISTER(HL, temp);
break;
case 6:
PutBYTE(adr, temp);
break;
case 7:
SET_HIGH_REGISTER(AF, temp);
break;
}
break;
case 0xe1: /* POP IY */
tStates += 14;
CHECK_BREAK_WORD(SP);
POP(IY);
break;
case 0xe3: /* EX (SP),IY */
tStates += 23;
CHECK_BREAK_WORD(SP);
temp = IY;
POP(IY);
PUSH(temp);
break;
case 0xe5: /* PUSH IY */
tStates += 15;
CHECK_BREAK_WORD(SP - 2);
PUSH(IY);
break;
case 0xe9: /* JP (IY) */
tStates += 8;
sim_brk_pend[0] = FALSE;
PCQ_ENTRY(PCX);
PC = IY;
break;
case 0xf9: /* LD SP,IY */
tStates += 10;
sim_brk_pend[0] = FALSE;
SP = IY;
break;
default: /* ignore FD */
sim_brk_pend[0] = FALSE;
CHECK_CPU_Z80;
PC--;
}
break;
case 0xfe: /* CP nn */
tStates += 7;
sim_brk_pend[0] = FALSE;
temp = RAM_PP(PC);
AF = (AF & ~0x28) | (temp & 0x28);
acu = HIGH_REGISTER(AF);
sum = acu - temp;
cbits = acu ^ temp ^ sum;
AF = (AF & ~0xff) | cpTable[sum & 0xff] | (temp & 0x28) |
(SET_PV) | cbits2Table[cbits & 0x1ff];
break;
case 0xff: /* RST 38H */
tStates += 11;
CHECK_BREAK_WORD(SP - 2);
PUSH(PC);
PCQ_ENTRY(PCX);
PC = 0x38;
}
}
/* It we stopped processing instructions because of a switch to the other
* CPU, then fixup the reason code.
*/
if (switch_cpu_now == FALSE) {
reason = SCPE_OK;
}
end_decode:
/* simulation halted */
PC_S = ((reason == STOP_OPCODE) || (reason == STOP_MEM)) ? PCX : (PC & ADDRMASK);
pcq_r -> qptr = pcq_p; /* update pc q ptr */
AF_S = AF;
BC_S = BC;
DE_S = DE;
HL_S = HL;
IX_S = IX;
IY_S = IY;
SP_S = SP;
executedTStates = tStates;
return reason;
}
/* reset routine */
static t_stat cpu_reset(DEVICE *dptr) {
extern uint32 sim_brk_types, sim_brk_dflt; /* breakpoint info */
int32 i;
AF_S = AF1_S = 0;
BC_S = DE_S = HL_S = 0;
BC1_S = DE1_S = HL1_S = 0;
IR_S = IX_S = IY_S = SP_S = 0;
IFF_S = 3;
setBankSelect(0);
cpu8086reset();
sim_brk_types = (SWMASK('E') | SWMASK('I') | SWMASK('M'));
sim_brk_dflt = SWMASK('E');
for (i = 0; i < PCQ_SIZE; i++)
pcq[i] = 0;
pcq_p = 0;
pcq_r = find_reg("PCQ", NULL, dptr);
if (pcq_r)
pcq_r -> qptr = 0;
else
return SCPE_IERR;
return SCPE_OK;
}
t_stat install_bootrom(int32 bootrom[], int32 size, int32 addr, int32 makeROM) {
int32 i;
if (addr & (PAGESIZE - 1))
return SCPE_IERR;
for (i = 0; i < size; i++) {
if (makeROM && ((i & (PAGESIZE - 1)) == 0))
mmu_table[(i + addr) >> LOG2PAGESIZE] = ROM_PAGE;
M[i + addr] = bootrom[i] & 0xff;
}
return SCPE_OK;
}
/* memory examine */
static t_stat cpu_ex(t_value *vptr, t_addr addr, UNIT *uptr, int32 sw) {
int32 oldBankSelect;
if (chiptype == CHIP_TYPE_8086)
*vptr = GetBYTEExtended(addr);
else {
oldBankSelect = getBankSelect();
setBankSelect((addr >> MAXBANKSIZELOG2) & BANKMASK);
*vptr = GetBYTE(addr & ADDRMASK);
setBankSelect(oldBankSelect);
}
return SCPE_OK;
}
/* memory deposit */
static t_stat cpu_dep(t_value val, t_addr addr, UNIT *uptr, int32 sw) {
int32 oldBankSelect;
if (chiptype == CHIP_TYPE_8086)
PutBYTEExtended(addr, val);
else {
oldBankSelect = getBankSelect();
setBankSelect((addr >> MAXBANKSIZELOG2) & BANKMASK);
PutBYTE(addr & ADDRMASK, val);
setBankSelect(oldBankSelect);
}
return SCPE_OK;
}
struct cpuflag {
int32 mask; /* bit mask within CPU status register */
char name; /* character to print if flag is set */
};
typedef struct cpuflag CPUFLAG;
static CPUFLAG cpuflags8086[] = {
{1 << 11, 'O'},
{1 << 10, 'D'},
{1 << 9, 'I'},
{1 << 8, 'T'},
{1 << 7, 'S'},
{1 << 6, 'Z'},
{1 << 4, 'A'},
{1 << 2, 'P'},
{1 << 0, 'C'},
{0, 0} /* last mask must be 0 */
};
static CPUFLAG cpuflags8080[] = {
{1 << 7, 'S'},
{1 << 6, 'Z'},
{1 << 4, 'A'},
{1 << 3, 'P'},
{1 << 1, 'N'},
{1 << 0, 'C'},
{0, 0} /* last mask must be 0 */
};
static CPUFLAG cpuflagsZ80[] = {
{1 << 7, 'S'},
{1 << 6, 'Z'},
{1 << 4, 'A'},
{1 << 3, 'V'},
{1 << 1, 'N'},
{1 << 0, 'C'},
{0, 0} /* last mask must be 0 */
};
/* needs to be set for each chiptype <= MAX_CHIP_TYPE */
static char *chipTypeToString[] = { "8080", "Z80", "8086" };
static int32 *flagregister[] = { &AF_S, &AF_S, &FLAGS_S };
static CPUFLAG *cpuflags[] = { cpuflags8080, cpuflagsZ80, cpuflags8086 };
/* needs to be set for each ramtype <= MAX_RAM_TYPE */
static char *ramTypeToString[] = { "AZ80", "HRAM", "VRAM", "CRAM" };
static t_stat chip_show(FILE *st, UNIT *uptr, int32 val, void *desc) {
fprintf(st, cpu_unit.flags & UNIT_CPU_OPSTOP ? "ITRAP, " : "NOITRAP, ");
if (chiptype <= MAX_CHIP_TYPE)
fprintf(st, "%s", chipTypeToString[chiptype]);
fprintf(st, ", ");
if (ramtype <= MAX_RAM_TYPE)
fprintf(st, "%s", ramTypeToString[ramtype]);
return SCPE_OK;
}
static t_stat cpu_show(FILE *st, UNIT *uptr, int32 val, void *desc) {
uint32 i, maxBanks, first = TRUE;
MDEV m;
maxBanks = ((cpu_unit.flags & UNIT_CPU_BANKED) ||
(chiptype == CHIP_TYPE_8086)) ? MAXBANKS : 1;
fprintf(st, "VERBOSE,\n ");
for (i = 0; i < 4; i++)
fprintf(st, "0123456789ABCDEF");
fprintf(st, " [16k]");
for (i = 0; i < (maxBanks * (MAXBANKSIZE >> LOG2PAGESIZE)); i++) {
if ((i & 0x3f) == 0)
fprintf(st, "\n%05X: ", (i << LOG2PAGESIZE));
m = mmu_table[i];
if (m.isRAM)
fprintf(st, "W");
else if (m.isEmpty)
fprintf(st, "U");
else if (m.routine)
fprintf(st, "M");
else
fprintf(st, "R");
}
fprintf(st, ",\n0x[");
/* show which ports are assigned */
for (i = 0; i < 256; i++)
if (dev_table[i].routine != &nulldev) {
if (first)
first = FALSE;
else
fprintf(st, " ");
fprintf(st, "%02X", i);
}
fprintf(st, "]");
if (chiptype <= MAX_CHIP_TYPE) {
first = TRUE;
/* show verbose CPU flags */
for (i = 0; cpuflags[chiptype][i].mask; i++)
if (*flagregister[chiptype] & cpuflags[chiptype][i].mask) {
if (first) {
first = FALSE;
fprintf(st, " ");
}
fprintf(st, "%c", cpuflags[chiptype][i].name);
}
}
return SCPE_OK;
}
static void cpu_clear(void) {
uint32 i;
for (i = 0; i < MAXMEMORY; i++) M[i] = 0;
for (i = 0; i < (MAXMEMORY >> LOG2PAGESIZE); i++)
mmu_table[i] = RAM_PAGE;
for (i = (MEMORYSIZE >> LOG2PAGESIZE); i < (MAXMEMORY >> LOG2PAGESIZE); i++)
mmu_table[i] = EMPTY_PAGE;
if (cpu_unit.flags & UNIT_CPU_ALTAIRROM)
install_ALTAIRbootROM();
}
static t_stat cpu_clear_command(UNIT *uptr, int32 value, char *cptr, void *desc) {
cpu_clear();
return SCPE_OK;
}
static t_stat cpu_set_altairrom(UNIT *uptr, int32 value, char *cptr, void *desc) {
install_ALTAIRbootROM();
return SCPE_OK;
}
static t_stat cpu_set_noaltairrom(UNIT *uptr, int32 value, char *cptr, void *desc) {
mmu_table[ALTAIR_ROM_LOW >> LOG2PAGESIZE] = MEMORYSIZE < MAXBANKSIZE ?
EMPTY_PAGE : RAM_PAGE;
return SCPE_OK;
}
static t_stat cpu_set_nommu(UNIT *uptr, int32 value, char *cptr, void *desc) {
if (chiptype == CHIP_TYPE_8086) {
printf("Cannot switch off MMU for 8086 CPU.\n");
return SCPE_ARG;
}
if (cpu_unit.flags & UNIT_CPU_BANKED) {
printf("Cannot switch off MMU for banked memory.\n");
return SCPE_ARG;
}
if (((chiptype == CHIP_TYPE_8080) || (chiptype == CHIP_TYPE_Z80)) &&
(MEMORYSIZE < MAXBANKSIZE)) {
printf("Cannot switch off MMU when memory is %iKB < %iKB.\n",
MEMORYSIZE >> KBLOG2, MAXBANKSIZE >> KBLOG2);
return SCPE_ARG;
}
return SCPE_OK;
}
static t_stat cpu_set_banked(UNIT *uptr, int32 value, char *cptr, void *desc) {
if ((chiptype == CHIP_TYPE_8080) || (chiptype == CHIP_TYPE_Z80)) {
if (MEMORYSIZE <= MAXBANKSIZE)
previousCapacity = MEMORYSIZE;
MEMORYSIZE = MAXMEMORY;
cpu_dev.awidth = MAXBANKSIZELOG2 + MAXBANKSLOG2;
cpu_clear();
}
else if (chiptype == CHIP_TYPE_8086) {
printf("Cannot use banked memory for 8086 CPU.\n");
return SCPE_ARG;
}
return SCPE_OK;
}
static t_stat cpu_set_nonbanked(UNIT *uptr, int32 value, char *cptr, void *desc) {
if ((chiptype == CHIP_TYPE_8080) || (chiptype == CHIP_TYPE_Z80)) {
MEMORYSIZE = previousCapacity;
cpu_dev.awidth = MAXBANKSIZELOG2;
cpu_clear();
}
return SCPE_OK;
}
static int32 bankseldev(const int32 port, const int32 io, const int32 data) {
if (io) {
switch(ramtype) {
case 1:
if (data & 0x40) {
printf("HRAM: Parity %s" NLP, data & 1 ? "ON" : "OFF");
} else {
printf("HRAM BANKSEL=%02x" NLP, data);
}
break;
case 2:
/* printf("VRAM BANKSEL=%02x" NLP, data);*/
switch(data & 0xFF) {
case 0x01:
/* case 0x41: // OASIS uses this for some reason? */
setBankSelect(0);
break;
case 0x02:
/* case 0x42: // OASIS uses this for some reason? */
setBankSelect(1);
break;
case 0x04:
setBankSelect(2);
break;
case 0x08:
setBankSelect(3);
break;
case 0x10:
setBankSelect(4);
break;
case 0x20:
setBankSelect(5);
break;
case 0x40:
setBankSelect(6);
break;
case 0x80:
setBankSelect(7);
break;
default:
/* printf("Invalid bank select 0x%02x for VRAM" NLP, data);*/
break;
}
break;
case 3:
/* printf(ADDRESS_FORMAT " CRAM BANKSEL=%02x" NLP, PCX, data); */
switch(data & 0x7F) {
case 0x01:
setBankSelect(0);
break;
case 0x02:
setBankSelect(1);
break;
case 0x04:
setBankSelect(2);
break;
case 0x08:
setBankSelect(3);
break;
case 0x10:
setBankSelect(4);
break;
case 0x20:
setBankSelect(5);
break;
case 0x40:
setBankSelect(6);
break;
/* case 0x80: */
/* setBankSelect(7); */
/* break; */
default:
printf("Invalid bank select 0x%02x for CRAM" NLP, data);
break;
}
break;
case 0:
default:
break;
}
return 0;
} else {
return(0xFF);
}
}
static void cpu_set_chiptype_short(int32 value, uint32 need_cpu_clear) {
extern REG *sim_PC;
if ((chiptype == value) || (chiptype > MAX_CHIP_TYPE))
return; /* nothing to do */
if (((chiptype == CHIP_TYPE_8080) && (value == CHIP_TYPE_Z80)) ||
((chiptype == CHIP_TYPE_Z80) && (value == CHIP_TYPE_8080))) {
chiptype = value;
return;
}
chiptype = value;
if (chiptype == CHIP_TYPE_8086) {
if (MEMORYSIZE <= MAXBANKSIZE)
previousCapacity = MEMORYSIZE;
MEMORYSIZE = MAXMEMORY;
cpu_unit.flags &= ~(UNIT_CPU_BANKED | UNIT_CPU_ALTAIRROM);
cpu_unit.flags |= UNIT_CPU_MMU;
cpu_dev.awidth = MAXBANKSIZELOG2 + MAXBANKSLOG2;
if (need_cpu_clear)
cpu_clear();
sim_PC = &cpu_reg[7];
}
else if ((chiptype == CHIP_TYPE_8080) || (chiptype == CHIP_TYPE_Z80)) {
MEMORYSIZE = previousCapacity;
cpu_dev.awidth = MAXBANKSIZELOG2;
if (need_cpu_clear)
cpu_clear();
sim_PC = &cpu_reg[6];
}
}
static t_stat cpu_set_chiptype(UNIT *uptr, int32 value, char *cptr, void *desc) {
cpu_set_chiptype_short(value, TRUE);
return SCPE_OK;
}
static int32 switchcpu_io(const int32 port, const int32 io, const int32 data) {
int32 new_chiptype = 0;
if (io == 0) { /* Read, switch CPU */
switch(chiptype) {
case CHIP_TYPE_8080:
case CHIP_TYPE_Z80:
if (cpu_unit.flags & UNIT_CPU_VERBOSE) {
printf("CPU: " ADDRESS_FORMAT " SWITCH(port=%02x) to 8086" NLP, PCX, port);
}
new_chiptype = CHIP_TYPE_8086;
switch_cpu_now = FALSE; /* hharte */
break;
case CHIP_TYPE_8086:
if (cpu_unit.flags & UNIT_CPU_VERBOSE) {
printf("CPU: " ADDRESS_FORMAT " SWITCH(port=%02x) to 8085/Z80" NLP, PCX, port);
}
new_chiptype = CHIP_TYPE_Z80;
switch_cpu_now = FALSE; /* hharte */
break;
default:
printf("%s: invalid chiptype: %d\n", __FUNCTION__, chiptype);
break;
}
cpu_set_chiptype_short(new_chiptype, FALSE);
return(0xFF); /* Return High-Z Data */
} else {
printf("%s: Set EXT_ADDR=%02x\n", __FUNCTION__, data);
}
return 0;
}
static t_stat cpu_show_switcher(FILE *st, UNIT *uptr, int32 val, void *desc) {
if ((cpu_unit.flags & UNIT_CPU_SWITCHER) && (switcherPort >= 0))
fprintf(st, "SWITCHER=0x%02x", switcherPort);
else
fprintf(st, "NOSWITCHER");
return SCPE_OK;
}
static t_stat cpu_set_switcher(UNIT *uptr, int32 value, char *cptr, void *desc) {
struct idev safe;
switcherPort &= 0xff;
safe = dev_table[switcherPort];
if (sim_map_resource(switcherPort, 1, RESOURCE_TYPE_IO, &switchcpu_io, FALSE)) {
printf("%s: error mapping I/O resource at 0x%04x\n", __FUNCTION__, switcherPort);
return SCPE_ARG;
}
oldSwitcherDevice = safe;
return SCPE_OK;
}
static t_stat cpu_reset_switcher(UNIT *uptr, int32 value, char *cptr, void *desc) {
if (sim_map_resource(switcherPort, 1, RESOURCE_TYPE_IO, oldSwitcherDevice.routine, FALSE)) {
printf("%s: error mapping I/O resource at 0x%04x\n", __FUNCTION__, switcherPort);
return SCPE_ARG;
}
return SCPE_OK;
}
static t_stat cpu_set_ramtype(UNIT *uptr, int32 value, char *cptr, void *desc) {
if (value == ramtype) {
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
printf("RAM Selection unchanged\n");
return SCPE_OK;
}
switch(ramtype) {
case 1:
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
printf("Unmapping NorthStar HRAM\n");
sim_map_resource(0xC0, 1, RESOURCE_TYPE_IO, &bankseldev, TRUE);
break;
case 2:
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
printf("Unmapping Vector RAM\n");
sim_map_resource(0x40, 1, RESOURCE_TYPE_IO, &bankseldev, TRUE);
break;
case 3:
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
printf("Unmapping Cromemco RAM\n");
sim_map_resource(0x40, 1, RESOURCE_TYPE_IO, &bankseldev, TRUE);
break;
case 0:
default:
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
printf("Unmapping AltairZ80 RAM\n");
break;
}
switch(value) {
case 1:
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
printf("NorthStar HRAM Selected\n");
sim_map_resource(0xC0, 1, RESOURCE_TYPE_IO, &bankseldev, FALSE);
break;
case 2:
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
printf("Vector RAM Selected\n");
sim_map_resource(0x40, 1, RESOURCE_TYPE_IO, &bankseldev, FALSE);
break;
case 3:
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
printf("Cromemco RAM Selected\n");
sim_map_resource(0x40, 1, RESOURCE_TYPE_IO, &bankseldev, FALSE);
break;
case 0:
default:
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
printf("AltairZ80 RAM Selected\n");
break;
}
ramtype = value;
return SCPE_OK;
}
/* set memory to 'size' kilo byte */
static t_stat set_size(uint32 size) {
uint32 maxsize = (((chiptype == CHIP_TYPE_8080) || (chiptype == CHIP_TYPE_Z80)) &&
((cpu_unit.flags & UNIT_CPU_BANKED) == 0)) ? MAXBANKSIZE : MAXMEMORY;
size <<= KBLOG2;
if (cpu_unit.flags & UNIT_CPU_BANKED)
size &= ~ADDRMASK;
cpu_unit.flags |= UNIT_CPU_MMU;
if (size < KB)
MEMORYSIZE = KB;
else if (size > maxsize)
MEMORYSIZE = maxsize;
else
MEMORYSIZE = size;
cpu_dev.awidth = MAXBANKSIZELOG2;
if (size > MAXBANKSIZE)
cpu_dev.awidth += MAXBANKSLOG2;
cpu_clear();
return SCPE_OK;
}
static t_stat cpu_set_size(UNIT *uptr, int32 value, char *cptr, void *desc) {
return set_size(value);
}
static t_stat cpu_set_memory(UNIT *uptr, int32 value, char *cptr, void *desc) {
uint32 size, result, i;
if (cptr == NULL)
return SCPE_ARG;
result = sscanf(cptr, "%i%n", &size, &i);
if ((result == 1) && (cptr[i] == 'K') && ((cptr[i + 1] == 0) ||
((cptr[i + 1] == 'B') && (cptr[i + 2] == 0))))
return set_size(size);
return SCPE_ARG;
}
/* AltairZ80 Simulator initialization */
void altairz80_init(void) {
cpu_clear();
/* altairz80_print_tables(); */
}
void (*sim_vm_init) (void) = &altairz80_init;
/* This is the binary loader. The input file is considered to be a string of
literal bytes with no special format. The load starts at the current value
of the PC if no start address is given. If the input string ends with ROM
(not case sensitive) the memory area is made read only.
ALTAIRROM/NOALTAIRROM settings are ignored.
*/
#define PLURAL(x) (x), (x) == 1 ? "" : "s"
t_stat sim_load(FILE *fileref, char *cptr, char *fnam, int32 flag) {
int32 i;
uint32 addr, cnt = 0, org, pagesModified = 0, makeROM = FALSE;
t_addr j, lo, hi;
char *result;
MDEV m;
char gbuf[CBUFSIZE];
if (flag) {
result = get_range(NULL, cptr, &lo, &hi, 16, ADDRMASKEXTENDED, 0);
if (result == NULL)
return SCPE_ARG;
for (j = lo; j <= hi; j++) {
if (putc(GetBYTEExtended(j), fileref) == EOF)
return SCPE_IOERR;
}
printf("%d byte%s dumped [%x - %x].\n", PLURAL(hi + 1 - lo), lo, hi);
}
else {
if (*cptr == 0)
addr = (chiptype == CHIP_TYPE_8086) ? PCX_S : PC_S;
else {
get_glyph(cptr, gbuf, 0);
if (strcmp(gbuf, "ROM") == 0) {
addr = (chiptype == CHIP_TYPE_8086) ? PCX_S : PC_S;
makeROM = TRUE;
}
else {
addr = strtotv(cptr, &result, 16) & ADDRMASKEXTENDED;
if (cptr == result)
return SCPE_ARG;
while (isspace(*result)) result++;
get_glyph(result, gbuf, 0);
if (strcmp(gbuf, "ROM") == 0)
makeROM = TRUE;
}
}
/* addr is start address to load to, makeROM == TRUE iff memory should become ROM */
org = addr;
while ((addr < MAXMEMORY) && ((i = getc(fileref)) != EOF)) {
m = mmu_table[addr >> LOG2PAGESIZE];
if (!m.isRAM && m.isEmpty) {
mmu_table[addr >> LOG2PAGESIZE] = RAM_PAGE;
pagesModified++;
m = RAM_PAGE;
}
if (makeROM) {
mmu_table[addr >> LOG2PAGESIZE] = ROM_PAGE;
m = ROM_PAGE;
}
if (!m.isRAM && m.routine)
m.routine(addr, 1, i);
else
M[addr] = i;
addr++;
cnt++;
} /* end while */
printf("%d byte%s [%d page%s] loaded at %x%s.\n", PLURAL(cnt),
PLURAL((cnt + 0xff) >> 8), org, makeROM ? " [ROM]" : "");
if (pagesModified)
printf("Warning: %d page%s modified.\n", PLURAL(pagesModified));
}
return SCPE_OK;
}
void cpu_raise_interrupt(uint32 irq) {
extern void cpu8086_intr(uint8 intrnum);
if (chiptype == CHIP_TYPE_8086) {
cpu8086_intr(irq);
} else if (cpu_unit.flags & UNIT_CPU_VERBOSE) {
printf("Interrupts not fully supported for chiptype: %s\n",
(chiptype <= MAX_CHIP_TYPE) ? chipTypeToString[chiptype] : "????");
}
}