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/* hp2100_di.h: HP 12821A HP-IB Disc Interface simulator declarations
Copyright (c) 2010-2017, J. David Bryan
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DI 12821A Disc Interface
15-Mar-17 JDB Trace flags are now global
09-Mar-17 JDB Changed the DIAG option to DIAGNOSTIC
10-Jan-17 JDB Moved byte accessors to hp2100_defs.h
13-May-16 JDB Modified for revised SCP API function parameter types
14-Feb-12 JDB First release
16-Nov-10 JDB Created DI common definitions file
This file defines the interface between HP-IB device simulators and the
12821A Disc Interface simulator. It must be included by the device-specific
modules (hp2100_di_da.c, etc.).
Implementation notes:
1. Three CARD_ID values are defined, corresponding to the Amigo disc (DA),
CS/80 disc (DC), and Amigo mag tape (MA) simulators. At first release,
only the DA device is implemented. However, as the 12821A diagnostic
requires two cards to test I/O fully, a dummy DC device is provided by
the DA simulator. It is enabled only when the DA card is configured for
diagnostic mode. This dummy device should be removed when either the DC
or MA device is implemented.
*/
/* Program constants */
#define FIFO_SIZE 16 /* FIFO depth */
typedef enum {
da, dc, ma, /* card IDs */
first_card = da, /* first card ID */
last_card = ma, /* last card ID */
card_count /* count of card IDs */
} CARD_ID;
/* Device flags and accessors (bits 7-0 are reserved for disc/tape flags) */
#define DEV_V_BUSADR (DEV_V_UF + 8) /* bits 10-8: interface HP-IB address */
#define DEV_V_DIAG (DEV_V_UF + 11) /* bit 11: diagnostic mode */
#define DEV_V_W1 (DEV_V_UF + 12) /* bit 12: DCPC pacing jumper */
#define DEV_M_BUSADR 07 /* bus address mask */
#define DEV_BUSADR (DEV_M_BUSADR << DEV_V_BUSADR)
#define DEV_DIAG (1 << DEV_V_DIAG)
#define DEV_W1 (1 << DEV_V_W1)
#define GET_DIADR(f) (((f) >> DEV_V_BUSADR) & DEV_M_BUSADR)
#define SET_DIADR(f) (((f) & DEV_M_BUSADR) << DEV_V_BUSADR)
/* Unit flags and accessors (bits 7-0 are reserved for disc/tape flags) */
#define UNIT_V_BUSADR (UNIT_V_UF + 8) /* bits 10-8: unit HP-IB address */
#define UNIT_M_BUSADR 07 /* bus address mask */
#define UNIT_BUSADR (UNIT_M_BUSADR << UNIT_V_BUSADR)
#define GET_BUSADR(f) (((f) >> UNIT_V_BUSADR) & UNIT_M_BUSADR)
#define SET_BUSADR(f) (((f) & UNIT_M_BUSADR) << UNIT_V_BUSADR)
/* HP-IB control line state bit flags.
NOTE that these flags align with the corresponding flags in the DI status
register, so don't change the numerical values!
*/
#define BUS_ATN 0001 /* attention */
#define BUS_EOI 0002 /* end or identify */
#define BUS_DAV 0004 /* data available */
#define BUS_NRFD 0010 /* not ready for data */
#define BUS_NDAC 0020 /* not data accepted */
#define BUS_REN 0040 /* remote enable */
#define BUS_IFC 0100 /* interface clear */
#define BUS_SRQ 0200 /* service request */
#define BUS_PPOLL (BUS_ATN | BUS_EOI) /* parallel poll */
/* HP-IB data */
#define BUS_ADDRESS 0037 /* bus address mask */
#define BUS_GROUP 0140 /* bus group mask */
#define BUS_COMMAND 0160 /* bus command type mask */
#define BUS_DATA 0177 /* bus data mask */
#define BUS_PARITY 0200 /* bus parity mask */
#define BUS_PCG 0000 /* primary command group */
#define BUS_LAG 0040 /* listen address group */
#define BUS_TAG 0100 /* talk address group */
#define BUS_SCG 0140 /* secondary command group */
#define BUS_UCG 0020 /* universal command group */
#define BUS_ACG 0000 /* addressed command group */
#define BUS_UNADDRESS 0037 /* unlisten and untalk addresses */
#define PPR(a) (uint8) (1 << (7 - (a))) /* parallel poll response */
/* Per-card state variables */
typedef struct {
FLIP_FLOP control; /* control flip-flop */
FLIP_FLOP flag; /* flag flip-flop */
FLIP_FLOP flagbuf; /* flag buffer flip-flop */
FLIP_FLOP srq; /* SRQ flip-flop */
FLIP_FLOP edt; /* EDT flip-flop */
FLIP_FLOP eor; /* EOR flip-flop */
BYTE_SELECTOR ibp; /* input byte pointer selector */
BYTE_SELECTOR obp; /* output byte pointer selector */
uint16 cntl_register; /* control word register */
uint16 status_register; /* status word register */
uint16 input_data_register; /* input data register */
uint32 fifo [FIFO_SIZE]; /* FIFO buffer */
uint32 fifo_count; /* FIFO occupancy counter */
REG *fifo_reg; /* FIFO register pointer */
uint32 acceptors; /* unit bitmap of the bus acceptors */
uint32 listeners; /* unit bitmap of the bus listeners */
uint32 talker; /* unit bitmap of the bus talker */
uint8 bus_cntl; /* HP-IB bus control state (ATN, EOI, etc.) */
uint8 poll_response; /* address bitmap of parallel poll responses */
double ifc_timer; /* 100 microsecond IFC timer */
} DI_STATE;
/* Disc interface VM global register definitions.
These definitions should be included before any device-specific registers.
Implementation notes:
1. The TMR register is included to ensure that the IFC timer is saved by a
SAVE command. It is declared as a hidden, read-only byte array of a size
compatible with a double-precision floating-point value, as there is no
appropriate macro for the double type.
*/
#define DI_REGS(dev) \
{ ORDATA (CWR, di [dev].cntl_register, 16), REG_FIT }, \
{ ORDATA (SWR, di [dev].status_register, 16), REG_FIT }, \
{ ORDATA (IDR, di [dev].input_data_register, 16), REG_FIT }, \
\
{ DRDATA (FCNT, di [dev].fifo_count, 5) }, \
{ BRDATA (FIFO, di [dev].fifo, 8, 20, FIFO_SIZE), REG_CIRC }, \
\
{ GRDATA (ACPT, di [dev].acceptors, 2, 4, 0) }, \
{ GRDATA (LSTN, di [dev].listeners, 2, 4, 0) }, \
{ GRDATA (TALK, di [dev].talker, 2, 4, 0) }, \
{ GRDATA (PPR, di [dev].poll_response, 2, 8, 0), REG_FIT }, \
{ GRDATA (BUSCTL, di [dev].bus_cntl, 2, 8, 0), REG_FIT }, \
\
{ FLDATA (CTL, di [dev].control, 0) }, \
{ FLDATA (FLG, di [dev].flag, 0) }, \
{ FLDATA (FBF, di [dev].flagbuf, 0) }, \
{ FLDATA (SRQ, di [dev].srq, 0) }, \
{ FLDATA (EDT, di [dev].edt, 0) }, \
{ FLDATA (EOR, di [dev].eor, 0) }, \
\
{ BRDATA (TMR, &di [dev].ifc_timer, 10, CHAR_BIT, sizeof (double)), REG_HRO }, \
\
{ ORDATA (SC, dev##_dib.select_code, 6), REG_HRO }
/* Disc interface VM global modifier definitions.
These definitions should be included before any device-specific modifiers.
*/
#define DI_MODS(dev,dib) \
{ MTAB_XTD | MTAB_VDV, 1, "ADDRESS", "ADDRESS", &di_set_address, &di_show_address, &dev }, \
\
{ MTAB_XTD | MTAB_VDV, 1, NULL, "DIAGNOSTIC", &di_set_cable, NULL, &dev }, \
{ MTAB_XTD | MTAB_VDV, 0, NULL, "HPIB", &di_set_cable, NULL, &dev }, \
{ MTAB_XTD | MTAB_VDV, 0, "CABLE", NULL, NULL, &di_show_cable, &dev }, \
\
{ MTAB_XTD | MTAB_VDV, 1, "SC", "SC", &hp_set_dib, &hp_show_dib, (void *) &dib }, \
{ MTAB_XTD | MTAB_VDV | MTAB_NMO, ~1u, "DEVNO", "DEVNO", &hp_set_dib, &hp_show_dib, (void *) &dib }, \
\
{ MTAB_XTD | MTAB_VUN, 0, "BUS", "BUS", &di_set_address, &di_show_address, &dev }
/* Disc interface global bus routine definitions */
typedef t_bool ACCEPTOR (uint32 unit, uint8 data);
typedef void RESPONDER (CARD_ID card, uint32 unit, uint8 new_cntl);
/* Disc interface global variables */
extern DI_STATE di [];
extern DEBTAB di_deb [];
/* Disc interface global VM routines */
extern IOHANDLER di_io;
extern t_stat di_reset (DEVICE *dptr);
/* Disc interface global SCP routines */
extern t_stat di_set_address (UNIT *uptr, int32 value, CONST char *cptr, void *desc);
extern t_stat di_set_cable (UNIT *uptr, int32 value, CONST char *cptr, void *desc);
extern t_stat di_show_address (FILE *st, UNIT *uptr, int32 value, CONST void *desc);
extern t_stat di_show_cable (FILE *st, UNIT *uptr, int32 value, CONST void *desc);
/* Disc interface global bus routines */
extern t_bool di_bus_source (CARD_ID card, uint8 data);
extern void di_bus_control (CARD_ID card, uint32 unit, uint8 assert, uint8 deny);
extern void di_poll_response (CARD_ID card, uint32 unit, FLIP_FLOP response);
/* Amigo disc global VM routines */
extern t_stat da_service (UNIT *uptr);
extern t_stat da_boot (int32 unitno, DEVICE *dptr);
/* Amigo disc global bus routines */
extern ACCEPTOR da_bus_accept;
extern RESPONDER da_bus_respond;
/* Amigo mag tape global VM routines */
extern t_stat ma_service (UNIT *uptr);
extern t_stat ma_boot (int32 unitno, DEVICE *dptr);
/* Amigo mag tape global SCP routines */
extern t_stat ma_set_timing (UNIT *uptr, int32 val, CONST char *cptr, void *desc);
extern t_stat ma_show_timing (FILE *st, UNIT *uptr, int32 val, CONST void *desc);
/* Amigo mag tape global bus routines */
extern ACCEPTOR ma_bus_accept;
extern RESPONDER ma_bus_respond;