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/* h316_defs.h: Honeywell 316/516 simulator definitions
Copyright (c) 1999-2015, Robert M. Supnik
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
ROBERT M SUPNIK 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 Robert M Supnik shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from Robert M Supnik.
31-May-13 RLA DIB - add second channel, interrupt and user parameter
19-Nov-11 RMS Removed XR macro, added XR_LOC macro (from Adrian Wise)
22-May-10 RMS Added check for 64b definitions
15-Feb-05 RMS Added start button interrupt
01-Dec-04 RMS Added double precision constants
24-Oct-03 RMS Added DMA/DMC support
25-Apr-03 RMS Revised for extended file support
*/
#ifndef H316_DEFS_H_
#define H316_DEFS_H_ 0
#include "sim_defs.h" /* simulator defns */
#if defined(USE_INT64) || defined(USE_ADDR64)
#error "H316 does not support 64b values!"
#endif
/* Simulator stop codes */
#define STOP_RSRV 1 /* must be 1 */
#define STOP_IODV 2 /* must be 2 */
#define STOP_HALT 3 /* HALT */
#define STOP_IBKPT 4 /* breakpoint */
#define STOP_IND 5 /* indirect loop */
#define STOP_DMAER 6 /* DMA error */
#define STOP_MTWRP 7 /* MT write protected */
#define STOP_DPOVR 8 /* DP write overrun */
#define STOP_DPFMT 9 /* DP invalid format */
/* Memory */
#define MAXMEMSIZE 32768 /* max memory size */
#define MEMSIZE (cpu_unit.capac) /* actual memory size */
#define X_AMASK (MAXMEMSIZE - 1) /* ext address mask */
#define NX_AMASK ((MAXMEMSIZE / 2) - 1) /* nx address mask */
#define MEM_ADDR_OK(x) (((uint32) (x)) < MEMSIZE)
/* Architectural constants */
#define SIGN 0100000 /* sign */
#define DP_SIGN 010000000000
#define DMASK 0177777 /* data mask */
#define MMASK (DMASK & ~SIGN) /* magnitude mask */
#define M_CLK 061 /* clock location */
#define M_RSTINT 062 /* restrict int */
#define M_INT 063 /* int location */
#define M_XR (ext? 0: (PC & 040000)) /* XR location */
/* CPU options */
#define UNIT_V_MSIZE (UNIT_V_UF + 0) /* dummy mask */
#define UNIT_V_EXT (UNIT_V_UF + 1) /* extended mem */
#define UNIT_V_HSA (UNIT_V_UF + 2) /* high speed arith */
#define UNIT_V_DMC (UNIT_V_UF + 3) /* DMC */
#define UNIT_MSIZE (1u << UNIT_V_MSIZE)
#define UNIT_EXT (1u << UNIT_V_EXT)
#define UNIT_HSA (1u << UNIT_V_HSA)
#define UNIT_DMC (1u << UNIT_V_DMC)
/* Instruction format */
#define I_M_OP 077 /* opcode */
#define I_V_OP 10
#define I_GETOP(x) (((x) >> I_V_OP) & I_M_OP)
#define I_M_FNC 017 /* function */
#define I_V_FNC 6
#define I_GETFNC(x) (((x) >> I_V_FNC) & I_M_FNC)
#define IA 0100000 /* indirect address */
#define IDX 0040000 /* indexed */
#define SC 0001000 /* sector */
#define DISP 0000777 /* page displacement */
#define PAGENO 0077000 /* page number */
#define INCLRA (010 << I_V_FNC) /* INA clear A */
#define DEVMASK 0000077 /* device mask */
#define SHFMASK 0000077 /* shift mask */
/* I/O opcodes */
#define ioOCP 0 /* output control */
#define ioSKS 1 /* skip if set */
#define ioINA 2 /* input to A */
#define ioOTA 3 /* output from A */
#define ioEND 4 /* channel end */
/* Device information block */
struct h316_dib {
uint32 dev; /* device number */
uint32 num; /* number of slots */
uint32 chan; /* dma/dmc channel */
uint32 chan2; /* alternate DMA/DMD channel */
uint32 inum; /* interrupt number */
uint32 inum2; /* alternate interrupt */
int32 (*io) (int32 inst, int32 fnc, int32 dat, int32 dev);
uint32 u3; /* "user" parameter #1 */
};
typedef struct h316_dib DIB;
/* DMA/DMC channel numbers */
#define IOBUS 0 /* IO bus */
#define DMA_MIN 1 /* 4 DMA channels */
#define DMA_MAX 4
#define DMC_MIN 1 /* 16 DMC channels */
#define DMC_MAX 16
#define DMA1 (DMA_MIN)
#define DMC1 (DMA_MAX+DMC_MIN)
/* DMA/DMC bit assignments in channel request word */
#define DMA_V_DMA1 0 /* DMA channels */
#define DMC_V_DMC1 4 /* DMC channels */
#define SET_CH_REQ(x) chan_req = chan_req | (1 << (x))
#define Q_DMA(x) (((x) >= 0) && ((x) < DMC_V_DMC1))
/* DMA/DMC definitions */
#define DMA_IN 0100000 /* input flag */
#define DMC_BASE 020 /* DMC memory base */
/* I/O device codes */
#define PTR 001 /* paper tape reader */
#define PTP 002 /* paper tape punch */
#define LPT 003 /* line printer */
#define TTY 004 /* console */
#define CDR 005 /* card reader */
#define MT 010 /* mag tape data */
#define CLK_KEYS 020 /* clock/keys (CPU) */
#define FHD 022 /* fixed head disk */
#define DMA 024 /* DMA control */
#define DP 025 /* moving head disk */
#define DEV_MAX 64
/* Interrupt flags, definitions correspond to SMK bits */
#define INT_V_CLK 0 /* clock */
#define INT_V_MPE 1 /* parity error */
#define INT_V_LPT 2 /* line printer */
#define INT_V_CDR 4 /* card reader */
#define INT_V_TTY 5 /* teletype */
#define INT_V_PTP 6 /* paper tape punch */
#define INT_V_PTR 7 /* paper tape reader */
#define INT_V_FHD 8 /* fixed head disk */
#define INT_V_DP 12 /* moving head disk */
#define INT_V_MT 15 /* mag tape */
#define INT_V_START 16 /* start button */
#define INT_V_NODEF 17 /* int not deferred */
#define INT_V_ON 18 /* int on */
#define INT_V_EXTD 16 /* first extended interrupt */
#define INT_V_NONE 0xffffffff /* no interrupt used */
/* I/O macros */
#define IOT_V_REASON 17
#define IOT_V_SKIP 16
#define IOT_SKIP (1u << IOT_V_SKIP)
#define IORETURN(f,v) (((f)? (v): SCPE_OK) << IOT_V_REASON)
#define IOBADFNC(x) (((stop_inst) << IOT_V_REASON) | (x))
#define IOSKIP(x) (IOT_SKIP | (x))
#define INT_CLK (1u << INT_V_CLK)
#define INT_MPE (1u << INT_V_MPE)
#define INT_LPT (1u << INT_V_LPT)
#define INT_CDR (1u << INT_V_CDR)
#define INT_TTY (1u << INT_V_TTY)
#define INT_PTP (1u << INT_V_PTP)
#define INT_PTR (1u << INT_V_PTR)
#define INT_FHD (1u << INT_V_FHD)
#define INT_DP (1u << INT_V_DP)
#define INT_MT (1u << INT_V_MT)
#define INT_START (1u << INT_V_START)
#define INT_NODEF (1u << INT_V_NODEF)
#define INT_ON (1u << INT_V_ON)
#define INT_NMI (INT_START)
#define INT_PEND (INT_ON | INT_NODEF)
// [RLA] These macros now all affect the standard interrupts. We'll leave
// [RLA] them alone for backward compatibility with the existing code.
#define SET_INT(x) dev_int = dev_int | (x)
#define CLR_INT(x) dev_int = dev_int & ~(x)
#define TST_INT(x) ((dev_int & (x)) != 0)
#define CLR_ENB(x) dev_enb = dev_enb & ~(x)
#define TST_INTREQ(x) ((dev_int & dev_enb & (x)) != 0)
// [RLA] These macros are functionally identical, but affect extended interrupts.
#define SET_EXT_INT(x) dev_ext_int = dev_ext_int | (x)
#define CLR_EXT_INT(x) dev_ext_int = dev_ext_int & ~(x)
#define TST_EXT_INT(x) ((dev_ext_int & (x)) != 0)
#define CLR_EXT_ENB(x) dev_ext_enb = dev_ext_enb & ~(x)
#define TST_EXT_INTREQ(x) ((dev_ext_int & dev_ext_enb & (x)) != 0)
/* Prototypes */
t_stat io_set_iobus (UNIT *uptr, int32 val, char *cptr, void *desc);
t_stat io_set_dma (UNIT *uptr, int32 val, char *cptr, void *desc);
t_stat io_set_dmc (UNIT *uptr, int32 val, char *cptr, void *desc);
t_stat io_show_chan (FILE *st, UNIT *uptr, int32 val, void *desc);
#endif