df6475181c
1. New Features 1.1 GRI-909 - This is a new simulator for the GRI-909. - It has been hand-tested; so far, no software has been discovered. 1.2 VAX - SET CPU CONHALT will cause a HALT instruction to return to the boot ROM console rather than to SIMH. SET CPU SIMHALT restores the default behavior. - BRB/W self at IPL 1F stops the simulator. This is the default behavior of VMS at exit. 1.3 PDP-18b - ATTACH -A PTR/PTP attaches the reader and punch in ASCII mode. In ASCII mode, the reader automatically sets the high order bit of incoming alphabetic data, and the punch clears the high order bit of outgoing data. 1.4 SCP - DO -V echoes commands from the file as they are executed. - Under Windows, execution priority is set BELOW_NORMAL when the simulator is running. 2. Release Notes 2.1 Bugs Fixed - PDP-11 CPU: fixed updating of MMR0 on a memory management error. - VAX FPA: changed function names to avoid conflict with C math library. - 1401 MT: read end of record generates group mark without word mark. - 1401 DP: fixed address generation and checking. - SCP: an EXIT within a DO command will cause the simulator to exit. 3. In Progress - Interdata 16b/32b: coded, not tested. - SDS 940: coded, not tested. - IBM 1620: coded, not tested. If you would like to help with the debugging of the untested simulators, they can be made available by special request.
103 lines
3.8 KiB
C
103 lines
3.8 KiB
C
/* pdp1_defs.h: 18b PDP simulator definitions
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Copyright (c) 1993-2002, 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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14-Apr-99 RMS Changed t_addr to unsigned
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The PDP-1 was Digital's first computer. The system design evolved during
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its life, and as a result, specifications are sketchy or contradictory.
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This simulator is based on the 1962 maintenance manual.
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This simulator implements the following options:
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Automatic multiply/divide Type 10
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Memory extension control Type 15
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Line printer control Type 62
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*/
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#include "sim_defs.h"
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/* Simulator stop codes */
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#define STOP_RSRV 1 /* must be 1 */
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#define STOP_HALT 2 /* HALT */
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#define STOP_IBKPT 3 /* breakpoint */
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#define STOP_XCT 4 /* nested XCT's */
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#define STOP_IND 5 /* nested indirects */
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#define STOP_WAIT 6 /* wait state */
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/* Memory */
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#define ASIZE 16 /* address bits */
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#define MAXMEMSIZE (1u << ASIZE) /* max mem size */
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#define AMASK (MAXMEMSIZE - 1) /* address mask */
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#define MEMSIZE (cpu_unit.capac) /* actual memory size */
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#define MEM_ADDR_OK(x) (((t_addr) (x)) < MEMSIZE)
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/* Architectural constants */
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#define DAMASK 007777 /* direct addr */
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#define EPCMASK (AMASK & ~DAMASK) /* extended addr */
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#define IA 010000 /* indirect flag */
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#define IO_WAIT 010000 /* I/O sync wait */
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#define IO_CPLS 004000 /* completion pulse */
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#define GEN_CPLS(x) (((x) ^ ((x) << 1)) & IO_WAIT) /* completion pulse? */
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/* IOT subroutine return codes */
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#define IOT_V_REASON 18 /* reason */
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#define IOT_REASON (1 << IOT_V_REASON)
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#define IORETURN(f,v) ((f)? (v): SCPE_OK) /* stop on error */
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/* I/O status flags */
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#define IOS_V_LPN 17 /* light pen */
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#define IOS_V_PTR 16 /* paper tape reader */
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#define IOS_V_TTO 15 /* typewriter out */
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#define IOS_V_TTI 14 /* typewriter in */
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#define IOS_V_PTP 13 /* paper tape punch */
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#define IOS_V_DRM 12 /* drum */
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#define IOS_V_SQB 11 /* sequence break */
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#define IOS_V_PNT 2 /* print done */
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#define IOS_V_SPC 1 /* space done */
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#define IOS_LPN (1 << IOS_V_LPN)
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#define IOS_PTR (1 << IOS_V_PTR)
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#define IOS_TTO (1 << IOS_V_TTO)
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#define IOS_TTI (1 << IOS_V_TTI)
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#define IOS_PTP (1 << IOS_V_PTP)
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#define IOS_DRM (1 << IOS_V_DRM)
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#define IOS_SQB (1 << IOS_V_SQB)
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#define IOS_PNT (1 << IOS_V_PNT)
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#define IOS_SPC (1 << IOS_V_SPC)
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/* Sequence break flags */
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#define SB_V_IP 0 /* in progress */
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#define SB_V_RQ 1 /* request */
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#define SB_V_ON 2 /* enabled */
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#define SB_IP (1 << SB_V_IP)
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#define SB_RQ (1 << SB_V_RQ)
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#define SB_ON (1 << SB_V_ON)
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