142 lines
5.3 KiB
C
142 lines
5.3 KiB
C
/* h316_defs.h: Honeywell 316/516 simulator definitions
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Copyright (c) 1993-2001, Robert M. Supnik
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of Robert M Supnik shall not
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be used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from Robert M Supnik.
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*/
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#include "sim_defs.h" /* simulator defns */
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/* Simulator stop codes */
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#define STOP_RSRV 1 /* must be 1 */
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#define STOP_IODV 2 /* must be 2 */
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#define STOP_HALT 3 /* HALT */
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#define STOP_IBKPT 4 /* breakpoint */
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#define STOP_IND 5 /* indirect loop */
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/* Memory */
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#define MAXMEMSIZE 32768 /* max memory size */
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#define MEMSIZE (cpu_unit.capac) /* actual memory size */
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#define X_AMASK (MAXMEMSIZE - 1) /* ext address mask */
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#define NX_AMASK ((MAXMEMSIZE / 2) - 1) /* nx address mask */
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#define MEM_ADDR_OK(x) (((t_addr) (x)) < MEMSIZE)
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/* Architectural constants */
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#define SIGN 0100000 /* sign */
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#define DMASK 0177777 /* data mask */
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#define MMASK (DMASK & ~SIGN) /* magnitude mask */
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#define XR M[0]
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#define M_CLK 061 /* clock location */
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#define M_RSTINT 062 /* restrict int */
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#define M_INT 063 /* int location */
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/* CPU options */
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#define UNIT_V_EXT (UNIT_V_UF + 1) /* extended mem */
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#define UNIT_EXT (1 << UNIT_V_EXT)
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#define UNIT_V_HSA (UNIT_V_UF + 2) /* high speed arith */
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#define UNIT_HSA (1 << UNIT_V_HSA)
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/* Instruction format */
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#define I_M_OP 077 /* opcode */
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#define I_V_OP 10
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#define I_GETOP(x) (((x) >> I_V_OP) & I_M_OP)
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#define I_M_FNC 017 /* function */
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#define I_V_FNC 6
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#define I_GETFNC(x) (((x) >> I_V_FNC) & I_M_FNC)
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#define IA 0100000 /* indirect address */
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#define IDX 0040000 /* indexed */
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#define SC 0001000 /* sector */
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#define DISP 0000777 /* page displacement */
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#define PAGENO 0077000 /* page number */
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#define INCLRA (010 << I_V_FNC) /* INA clear A */
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#define DEVMASK 0000077 /* device mask */
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#define SHFMASK 0000077 /* shift mask */
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/* I/O opcodes */
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#define ioOCP 0 /* output control */
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#define ioSKS 1 /* skip if set */
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#define ioINA 2 /* input to A */
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#define ioOTA 3 /* output from A */
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/* I/O devices */
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#define PTR 001 /* paper tape reader */
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#define PTP 002 /* paper tape punch */
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#define LPT 003 /* line printer */
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#define TTY 004 /* console */
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#define CDR 005 /* card reader */
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#define MT 010 /* mag tape data */
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#define KEYS 020 /* keys (CPU) */
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#define FHD 022 /* fixed head disk */
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#define DMA 024 /* DMA control */
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#define DP 025 /* moving head disk */
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#define OPT 034 /* SKS/OCP option */
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/* Interrupt flags, definitions correspond to SMK bits */
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#define INT_V_CLK 0 /* clock */
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#define INT_V_MPE 1 /* parity error */
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#define INT_V_LPT 2 /* line printer */
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#define INT_V_CDR 4 /* card reader */
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#define INT_V_TTY 5 /* teletype */
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#define INT_V_PTP 6 /* paper tape punch */
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#define INT_V_PTR 7 /* paper tape reader */
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#define INT_V_FHD 8 /* fixed head disk */
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#define INT_V_DP 12 /* moving head disk */
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#define INT_V_MT 15 /* mag tape */
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#define INT_V_NODEF 16 /* int not deferred */
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#define INT_V_ON 17 /* int on */
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/* I/O macros */
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#define IOT_V_REASON 17
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#define IOT_V_SKIP 16
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#define IOT_SKIP (1u << IOT_V_SKIP)
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#define IORETURN(f,v) ((f)? (v): SCPE_OK) /* stop on error */
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#define IOBADFNC(x) (((stop_inst) << IOT_V_REASON) | (x))
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#define IOSKIP(x) (IOT_SKIP | (x))
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#define INT_CLK (1u << INT_V_CLK)
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#define INT_MPE (1u << INT_V_MPE)
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#define INT_LPT (1u << INT_V_LPT)
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#define INT_CDR (1u << INT_V_CDR)
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#define INT_TTY (1u << INT_V_TTY)
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#define INT_PTP (1u << INT_V_PTP)
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#define INT_PTR (1u << INT_V_PTR)
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#define INT_FHD (1u << INT_V_FHD)
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#define INT_DP (1u << INT_V_DP)
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#define INT_MT (1u << INT_V_MT)
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#define INT_NODEF (1u << INT_V_NODEF)
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#define INT_ON (1u << INT_V_ON)
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#define INT_PENDING (INT_ON | INT_NODEF)
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#define SET_READY(x) dev_ready = dev_ready | (x)
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#define CLR_READY(x) dev_ready = dev_ready & ~(x)
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#define TST_READY(x) ((dev_ready & (x)) != 0)
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#define CLR_ENABLE(x) dev_enable = dev_enable & ~(x)
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#define TST_INTREQ(x) ((dev_ready & dev_enable & (x)) != 0)
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