| /* hp2100_di.h: HP 12821A HP-IB Disc Interface simulator definitions | |
| Copyright (c) 2010-2012, J. David Bryan | |
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| DI 12821A Disc Interface | |
| 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) | |
| /* Debug flags */ | |
| #define DEB_CPU (1 << 0) /* words received from and sent to the CPU */ | |
| #define DEB_CMDS (1 << 1) /* interface commands received from the CPU */ | |
| #define DEB_BUF (1 << 2) /* data read from and written to the card FIFO */ | |
| #define DEB_XFER (1 << 3) /* data received and transmitted via HP-IB */ | |
| #define DEB_RWSC (1 << 4) /* device read/write/status/control commands */ | |
| #define DEB_SERV (1 << 5) /* unit service scheduling calls */ | |
| /* 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 */ | |
| /* Byte accessors */ | |
| #define BYTE_SHIFT 8 /* byte shift count */ | |
| #define UPPER_BYTE 0177400 /* high-order byte mask */ | |
| #define LOWER_BYTE 0000377 /* low-order byte mask */ | |
| #define GET_UPPER(w) (uint8) (((w) & UPPER_BYTE) >> BYTE_SHIFT) | |
| #define GET_LOWER(w) (uint8) ((w) & LOWER_BYTE) | |
| #define SET_UPPER(b) ((b) << BYTE_SHIFT) | |
| #define SET_LOWER(b) (b) | |
| #define SET_BOTH(b) (SET_UPPER (b) | SET_LOWER (b)) | |
| typedef enum { | |
| upper, /* upper byte selected */ | |
| lower /* lower byte selected */ | |
| } SELECTOR; | |
| /* 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 */ | |
| SELECTOR ibp; /* input byte pointer selector */ | |
| 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) \ | |
| { MTAB_XTD | MTAB_VDV, 1, "ADDRESS", "ADDRESS", &di_set_address, &di_show_address, &dev }, \ | |
| \ | |
| { MTAB_XTD | MTAB_VDV, 1, NULL, "DIAG", &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, 0, "SC", "SC", &hp_setsc, &hp_showsc, &dev }, \ | |
| { MTAB_XTD | MTAB_VDV | MTAB_NMO, 0, "DEVNO", "DEVNO", &hp_setdev, &hp_showdev, &dev }, \ | |
| \ | |
| { 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, char *cptr, void *desc); | |
| extern t_stat di_show_address (FILE *st, UNIT *uptr, int32 value, void *desc); | |
| extern t_stat di_set_cable (UNIT *uptr, int32 value, char *cptr, void *desc); | |
| extern t_stat di_show_cable (FILE *st, UNIT *uptr, int32 value, 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, char *cptr, void *desc); | |
| extern t_stat ma_show_timing (FILE *st, UNIT *uptr, int32 val, void *desc); | |
| /* Amigo mag tape global bus routines */ | |
| extern ACCEPTOR ma_bus_accept; | |
| extern RESPONDER ma_bus_respond; |