701f0fe028
1. New Features
1.1 Directory and documentation
- Only common files (SCP and libraries) are in the top level
directory. Individual simulator files are in their individual
directories.
- simh_doc.txt has been split up. simh_doc.txt now documents
only SCP. The individual simulators are documented in separate
text files in their own directories.
- mingw_build.bat is a batch file for the MINGW/gcc environment
that will build all the simulators, assuming the root directory
structure is at c:\sim.
- Makefile is a UNIX make file for the gcc environment that will
build all the simulators, assuming the root directory is at
c:\sim.
1.2 SCP
- DO <file name> executes the SCP commands in the specified file.
- Replicated registers in unit structures can now be declared as
arrays for examine, modify, save, and restore. Most replicated
unit registers (for example, mag tape position registers) have
been changed to arrays.
- The ADD/REMOVE commands have been replaced by SET unit ONLINE
and SET unit OFFLINE, respectively.
- Register names that are unique within an entire simulator do
not have to be prefaced with the device name.
- The ATTACH command can attach files read only, either under
user option (-r), or because the attached file is ready only.
- The SET/SHOW capabilities have been extended. New forms include:
SET <dev> param{=value}{ param ...}
SET <unit> param{=value}{ param ...}
SHOW <dev> {param param ...}
SHOW <unit> {param param ...}
- Multiple breakpoints have been implemented. Breakpoints are
set/cleared/displayed by:
BREAK addr_list{[count]}
NOBREAK addr_list
SHOW BREAK addr_list
1.3 PDP-11 simulator
- Unibus map implemented, with 22b RP controller (URH70) or 18b
RP controller (URH11) (in debug).
- All DMA peripherals rewritten to use map.
- Many peripherals modified for source sharing with VAX.
- RQDX3 implemented.
- Bugs fixed in RK11 and RL11 write check.
1.4 PDP-10 simulator
- ITS 1-proceed implemented.
- Bugs fixed in ITS PC sampling and LPMR
1.5 18b PDP simulator
- Interrupts split out to multiple levels to allow easier
expansion.
1.5 IBM System 3 Simulator
- Written by Charles (Dutch) Owen.
1.6 VAX Simulator (in debug)
- Simulates MicroVAX 3800 (KA655) with 16MB-64MB memory, RQDX3,
RLV12, TSV11, DZV11, LPV11, PCV11.
- CDROM capability has been added to the RQDX3, to allow testing
with VMS hobbyist images.
1.7 SDS 940 Simulator (not tested)
- Simulates SDS 940, 16K-64K memory, fixed and moving head
disk, magtape, line printer, console.
1.8 Altair Z80
- Revised from Charles (Dutch) Owen's original by Peter Schorn.
- MITS 8080 with full Z80 simulation.
- 4K and 8K BASIC packages, Prolog package.
1.9 Interdata
The I4 simulator has been withdrawn for major rework. Look for
a complete 16b/32b Interdata simulator sometime next year.
2. Release Notes
2.1 SCP
SCP now allows replicated registers in unit structures to be
modelled as arrays. All replicated register declarations have
been replaced by register array declarations. As a result,
save files from prior revisions will generate errors after
restoring main memory.
2.2 PDP-11
The Unibus map code is in debug. The map was implemented primarily
to allow source sharing with the VAX, which requires a DMA map.
DMA devices work correctly with the Unibus map disabled.
The RQDX3 simulator has run a complete RSTS/E SYSGEN, with multiple
drives, and booted the completed system from scratch.
2.3 VAX
The VAX simulator will run the boot code up to the >>> prompt. It
can successfully process a SHOW DEVICE command. It runs the HCORE
instruction diagnostic. It can boot the hobbyist CD through SYSBOOT
and through the date/time dialog and restore the hobbyist CD, using
standalone backup. On the boot of the restored disk, it gets to the
date/time dialog, and then crashes.
2.4 SDS 940
The SDS 940 is untested, awaiting real code.
2.5 GCC Optimization
At -O2 and above, GCC does not correctly compile the simulators which
use setjmp-longjmp (PDP-11, PDP-10, VAX). A working hypothesis is
that optimized state maintained in registers is being used in the
setjmp processing routine. On the PDP-11 and PDP-10, all of this
state has been either made global, or volatile, to encourage GCC to
keep the state up to date in memory. The VAX is still vulnerable.
3. Work list
3.1 SCP
- Better ENABLE/DISABLE.
3.2 PDP-11 RQDX3
Software mapped mode, RCT read simulation, VMS debug.
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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