- Different VAX models had different groups of instructions which were
implemented in hardware vs trappng to the OS for emulation. Functionality
has been added to differentiate the various mix of instruction groups for
different models and to display both the groups and the actual instructions.
- Visibility to Instruction groups is provided by SHOW CPU INSTRUCTIONS
and the list of the active instructions implemented and emulated via
SHOW CPU -V INSTRUCTIONS.
- The MicroVAX I CPU handled some execution fault conditions differently
from other VAX systems these differences are now specifically handled.
- Add build time test support to MicroVAX I running EHKAA v1.13
suggested in #683
- Add more CPU debug details relating to exception and interrupt processing
Originally, the VAX allowed immediate operands (8F) to be used without
restrictions in address mode instructions, either standalone or indexed.
Starting with MicroVAX II, immediate indexed became reserved. This
remained true for all subsequent chip implementations. The SRM was
ECOed in March, 1985 to make immediate indexed unpredictable.
In MicroVAX II, immediate g-floating operands didn't work correctly. The
problem was found a couple of months after tape-out. While the index
flows could be fixed, and were fixed according to the microcode revision
history:
; 7-May-84 [RMS] Fixed FD problem in index flows (JLR)
the problem in indexed immediate could only be fixed by a significant
hardware change in an area that was already packed full. The VAX
Architecture Team, which had always been very sympathetic to the
VAX chip efforts, proposed a much simpler solution: make immediate
indexed unpredictable. It was useless, in any case.
I'm rather surprised that this wasn't flagged by the 780 diagnostics.
Maybe it was never tested. It was tested in HCORE (the original MicroVAX I
core diagnostic that is failing), but I removed it subsequently:
; 8-may-85 rms removed indexed immediate tests
Bottom line - the simulator is right for the chip VAXes (including, I think,
V11) and wrong for MicroVAX I and probably the 8600, 780, 750, and 730.
# Conflicts:
# VAX/vax_cpu.c
The makefile now works for Linux and most Unix's. Howevr, for Solaris
and MacOS, you must first export the OSTYPE environment variable:
> export OSTYPE
> make
Otherwise, you will get build errors.
1. New Features
1.1 3.8-0
1.1.1 SCP and Libraries
- BREAK, NOBREAK, and SHOW BREAK with no argument will set, clear, and
show (respectively) a breakpoint at the current PC.
1.1.2 GRI
- Added support for the GRI-99 processor.
1.1.3 HP2100
- Added support for the BACI terminal interface.
- Added support for RTE OS/VMA/EMA, SIGNAL, VIS firmware extensions.
1.1.4 Nova
- Added support for 64KW memory (implemented in third-party CPU's).
1.1.5 PDP-11
- Added support for DC11, RC11, KE11A, KG11A.
- Added modem control support for DL11.
- Added ASCII character support for all 8b devices.
1.2 3.8-1
1.2.1 SCP and libraries
- Added capability to set line connection order for terminal multiplexers.
1.2.2 HP2100
- Added support for 12620A/12936A privileged interrupt fence.
- Added support for 12792C eight-channel asynchronous multiplexer.
2. Bugs Fixed
Please see the revision history on http://simh.trailing-edge.com or
in the source module sim_rev.h.
The makefile now works for Linux and most Unix's. Howevr, for Solaris
and MacOS, you must first export the OSTYPE environment variable:
> export OSTYPE
> make
Otherwise, you will get build errors.
1. New Features
1.1 3.8-0
1.1.1 SCP and Libraries
- BREAK, NOBREAK, and SHOW BREAK with no argument will set, clear, and
show (respectively) a breakpoint at the current PC.
1.2 GRI
- Added support for the GRI-99 processor.
1.3 HP2100
- Added support for the BACI terminal interface.
- Added support for RTE OS/VMA/EMA, SIGNAL, VIS firmware extensions.
1.4 Nova
- Added support for 64KW memory (implemented in third-party CPU's).
1.5 PDP-11
- Added support for DC11, RC11, KE11A, KG11A.
- Added modem control support for DL11.
- Added ASCII character support for all 8b devices.
2. Bugs Fixed
Please see the revision history on http://simh.trailing-edge.com or
in the source module sim_rev.h.
The save/restore format has been updated to improve its reliability.
As a result, save files prior to release 3.0 are no longer supported.
The text documentation files are obsolete and are no longer included
with the distribution. Up-to-date PDF documentation files are
available on the SimH web site.
1. New Features
1.1 3.6-0
1.1.1 Most magnetic tapes
- Added support for limiting tape capacity to a particular size in MB
1.1.2 IBM 7090/7094
- First release
1.1.3 VAX-11/780
- Added FLOAD command, loads system file from console floppy disk
1.1.4 VAX, VAX-11/780, and PDP-11
- Added card reader support (from John Dundas)
1.1.5 PDP-11
- Added instruction history
2. Bugs Fixed
Please see the revision history on http://simh.trailing-edge.com or
in the source module sim_rev.h.
The source set has been extensively overhauled. For correct
viewing, set Visual C++ or Emacs to have tab stops every 4
characters.
1. New Features in 3.4-1
1.1 All Ethernet devices
- Added Windows user-defined adapter names (from Timothe Litt)
1.2 Interdata, SDS, HP, PDP-8, PDP-18b terminal multiplexors
- Added support for SET <unit>n DISCONNECT
1.3 VAX
- Added latent QDSS support
- Revised autoconfigure to handle QDSS
1.4 PDP-11
- Revised autoconfigure to handle more casees
2. Bugs Fixed in 3.4-1
2.1 SCP and libraries
- Trim trailing spaces on all input (for example, attach file names)
- Fixed sim_sock spurious SIGPIPE error in Unix/Linux
- Fixed sim_tape misallocation of TPC map array for 64b simulators
2.2 1401
- Fixed bug, CPU reset was clearing SSB through SSG
2.3 PDP-11
- Fixed bug in VH vector display routine
- Fixed XU runt packet processing (found by Tim Chapman)
2.4 Interdata
- Fixed bug in SHOW PAS CONN/STATS
- Fixed potential integer overflow exception in divide
2.5 SDS
- Fixed bug in SHOW MUX CONN/STATS
2.6 HP
- Fixed bug in SHOW MUX CONN/STATS
2.7 PDP-8
- Fixed bug in SHOW TTIX CONN/STATS
- Fixed bug in SET/SHOW TTOXn LOG
2.8 PDP-18b
- Fixed bug in SHOW TTIX CONN/STATS
- Fixed bug in SET/SHOW TTOXn LOG
2.9 Nova, Eclipse
- Fixed potential integer overflow exception in divide
1. New Features in 3.3-1
1.1 H316
TTY - implemented paper-tape reader and punch
- added ASCII file support
PTR,PTP - added ASCII file support
1.2 HP2100
CPU - added SET CPU 21MX-M, 21MX-E (from Dave Brian)
- disabled TIMER/EXECUTE/DIAG instructions for 21MX-M (from Dave Bryan)
- added post-processor to maintain T/M consistency (from Dave Bryan)
DS - released 13037 disk controller
1.3 Interdata
MT - added read-only file support
1.4 SDS
MT - added read-only file support
1.5 PDP-11
TM,TS - added read-only file support
2. Bugs Fixed in 3.3
2.1 H316
CPU - fixed bug in divide
LPT - fixed bug in DMA/DMC support
MT - fixed bug in DMA/DMC support
DP - fixed bug in skip on not seeking
TTY - fixed bugs in SKS '104, '504
2.2 HP2100
CPU - fixed DMA reset to clear alternate CTL flop (from Dave Bryan)
- fixed bug in JPY (from Dave Bryan)
- fixed bugs in CBS, SBS, TBS
- separate A/B from M[0/1] for DMA (found by Dave Bryan)
LPS - added restart when set online, etc. (from Dave Bryan)
- fixed col count for non-printing chars (from Dave Bryan)
LPT - added restart when set online, etc. (from Dave Bryan)
2.3 PDP-11
CPU - fixed WAIT to work in all modes (from John Dundas)
RESTRICTION: The HP DS disk is not debugged. DO NOT enable this
feature for normal operations.
WARNING: Massive changes in the PDP-11 make all previous SAVEd
file obsolete. Do not attempt to use a PDP-11 SAVE file from a
prior release with V3.3!
1. New Features in 3.3
1.1 SCP
- Added -p (powerup) qualifier to RESET
- Changed SET <unit> ONLINE/OFFLINE to SET <unit> ENABLED/DISABLED
- Moved SET DEBUG under SET CONSOLE hierarchy
- Added optional parameter value to SHOW command
- Added output file option to SHOW command
1.2 PDP-11
- Separated RH Massbus adapter from RP controller
- Added TU tape support
- Added model emulation framework
- Added model details
1.3 VAX
- Separated out CVAX-specific features from core instruction simulator
- Implemented capability for CIS, octaword, compatibility mode instructions
- Added instruction display and parse for compatibility mode
- Changed SET CPU VIRTUAL=n to SHOW CPU VIRTUAL=n
- Added =n optional parameter to SHOW CPU HISTORY
1.4 Unibus/Qbus simulators (PDP-11, VAX, PDP-10)
- Simplified DMA API's
- Modified DMA peripherals to use simplified API's
1.5 HP2100 (all changes from Dave Bryan)
CPU - moved MP into its own device; added MP option jumpers
- modified DMA to allow disabling
- modified SET CPU 2100/2116 to truncate memory > 32K
- added -F switch to SET CPU to force memory truncation
- modified WRU to be REG_HRO
- added BRK and DEL to save console settings
DR - provided protected tracks and "Writing Enabled" status bit
- added "parity error" status return on writes for 12606
- added track origin test for 12606
- added SCP test for 12606
- added "Sector Flag" status bit
- added "Read Inhibit" status bit for 12606
- added TRACKPROT modifier
LPS - added SET OFFLINE/ONLINE, POWEROFF/POWERON
- added fast/realistic timing
- added debug printouts
LPT - added SET OFFLINE/ONLINE, POWEROFF/POWERON
PTR - added paper tape loop mode, DIAG/READER modifiers to PTR
- added PV_LEFT to PTR TRLLIM register
CLK - modified CLK to permit disable
1.6 IBM 1401, IBM 1620, Interdata 16b, SDS 940, PDP-10
- Added instruction history
1.7 H316, PDP-15, PDP-8
- Added =n optional value to SHOW CPU HISTORY
2. Bugs Fixed in 3.3
2.1 SCP
- Fixed comma-separated SET options (from Dave Bryan)
- Fixed duplicate HELP displays with user-specified commands
2.2 PDP-10
- Replicated RP register state per drive
- Fixed TU to set FCE on short record
- Fixed TU to return bit<15> in drive type
- Fixed TU format specification, 1:0 are don't cares
- Fixed TU handling of TMK status
- Fixed TU handling of DONE, ATA at end of operation
- Implemented TU write check
2.3 PDP-11
- Replicated RP register state per drive
- Fixed RQ, TQ to report correct controller type and stage 1 configuration
flags on a Unibus system
- Fixed HK CS2<output_ready> flag
2.4 VAX
- Fixed parsing of indirect displacement modes in instruction input
2.5 HP2100 (all fixes from Dave Bryan)
CPU - fixed S-register behavior on 2116
- fixed LIx/MIx behavior for DMA on 2116 and 2100
- fixed LIx/MIx behavior for empty I/O card slots
DP - fixed enable/disable from either device
- fixed ANY ERROR status for 12557A interface
- fixed unattached drive status for 12557A interface
- status cmd without prior STC DC now completes (12557A)
- OTA/OTB CC on 13210A interface also does CLC CC
- fixed RAR model
- fixed seek check on 13210 if sector out of range
DQ - fixed enable/disable from either device
- shortened xtime from 5 to 3 (drive avg 156KW/second)
- fixed not ready/any error status
- fixed RAR model
DR - fixed enable/disable from either device
- fixed sector return in status word
- fixed DMA last word write, incomplete sector fill value
- fixed 12610 SFC operation
- fixed current-sector determination
IPL - fixed enable/disable from either device
LPS - fixed status returns for error conditions
- fixed handling of non-printing characters
- fixed handling of characters after column 80
- improved timing model accuracy for RTE
LPT - fixed status returns for error conditions
- fixed TOF handling so form remains on line 0
SYS - fixed display of CCA/CCB/CCE instructions
2.5 PDP-15
FPP - fixed URFST to mask low 9b of fraction
- fixed exception PC setting
