1. New Features in 3.3-2
1.1 SCP and Libraries
- Added ASSERT command (from Dave Bryan)
1.2 PDP-11, VAX
- Added RA60, RA71, RA81 disks
2. Bugs Fixed in 3.3-2
2.1 H316
- Fixed IORETURN macro
- PT: fixed bug in OCP '0001 (found by Philipp Hachtmann)
- MT: fixed error reporting from OCP (found by Philipp Hachtmann)
2.2 Interdata 32b
- Fixed branches to mask new PC (from Greg Johnson)
2.3 PDP-11
- Fixed bugs in RESET for 11/70 (reported by Tim Chapman)
- Fixed bug in SHOW MODEL (from Sergey Okhapkin)
- Made SYSID variable for 11/70 (from Tim Chapman)
- Fixed MBRK write case for 11/70 (from Tim Chapman)
- RY: fixed bug in boot code (reported by Graham Toal)
2.4 VAX
- Fixed initial state of cpu_extmem
2.5 HP2100 (from Dave Bryan)
- Fixed missing MPCK on JRS target
- Removed EXECUTE instruction (is NOP in actual microcode)
- Fixed missing negative overflow renorm in StoreFP
2.6 I1401
- Fixed bug in line printer write line (reported by Van Snyder)
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
RESTRICTION: The PDP-15 FPP is only partially debugged. Do NOT
enable this feature for normal operations.
1. New Features in 3.2-1
1.1 SCP and libraries
- Added SET CONSOLE subhierarchy.
- Added SHOW CONSOLE subhierarchy.
- Added limited keyboard mapping capability.
1.2 HP2100 (new features from Dave Bryan)
- Added instruction printout to HALT message.
- Added M and T internal registers.
- Added N, S, and U breakpoints.
1.3 PDP-11 and VAX
- Added DHQ11 support (from John Dundas)
2. Bugs Fixed in 3.2-1
2.1 HP2100 (most fixes from Dave Bryan)
- SBT increments B after store.
- DMS console map must check dms_enb.
- SFS x,C and SFC x,C work.
- MP violation clears automatically on interrupt.
- SFS/SFC 5 is not gated by protection enabled.
- DMS enable does not disable mem prot checks.
- DMS status inconsistent at simulator halt.
- Examine/deposit are checking wrong addresses.
- Physical addresses are 20b not 15b.
- Revised DMS to use memory rather than internal format.
- Revised IBL facility to conform to microcode.
- Added DMA EDT I/O pseudo-opcode.
- Separated DMA SRQ (service request) from FLG.
- Revised peripherals to make SFS x,C and SFC x,C work.
- Revised boot ROMs to use IBL facility.
- Revised IBL treatment of SR to preserve SR<5:3>.
- Fixed LPS, LPT timing.
- Fixed DP boot interpretation of SR<0>.
- Revised DR boot code to use IBL algorithm.
- Fixed TTY input behavior during typeout for RTE-IV.
- Suppressed nulls on TTY output for RTE-IV.
- Added SFS x,C and SFC x,C to print/parse routines.
- Fixed spurious timing error in magtape reads.
2.2 All DEC console devices
- Removed SET TTI CTRL-C option.
2.3 PDP-11/VAX peripherals
- Fixed bug in TQ reporting write protect status (reported by Lyle Bickley).
- Fixed TK70 model number and media ID (found by Robert Schaffrath).
- Fixed bug in autoconfigure (found by John Dundas).
2.4 VAX
- Fixed bug in DIVBx and DIVWx (reported by Peter Trimmel).
RESTRICTION: The PDP-15 FPP is only partially debugged. Do NOT
enable this feature for normal operations.
WARNING: The core simulator files (scp.c, sim_*.c) have been
reorganized. Unzip V3.2-0 to an empty directory before attempting
to compile the source.
IMPORTANT: If you are compiling for UNIX, please read the notes
for Ethernet very carefully. You may need to download a new
version of the pcap library, or make changes to the makefile,
to get Ethernet support to work.
1. New Features in 3.2-0
1.1 SCP and libraries
- Added SHOW <device> RADIX command.
- Added SHOW <device> MODIFIERS command.
- Added SHOW <device> NAMES command.
- Added SET/SHOW <device> DEBUG command.
- Added sim_vm_parse_addr and sim_vm_fprint_addr optional interfaces.
- Added REG_VMAD flag.
- Split SCP into separate libraries for easier modification.
- Added more room to the device and unit flag fields.
- Changed terminal multiplexor library to support unlimited.
number of async lines.
1.2 All DECtapes
- Added STOP_EOR flag to enable end-of-reel error stop
- Added device debug support.
1.3 Nova and Eclipse
- Added QTY and ALM multiplexors (Bruce Ray).
1.4 LGP-30
- Added LGP-30/LGP-21 simulator.
1.5 PDP-11
- Added format, address increment inhibit, transfer overrun
detection to RK.
- Added device debug support to HK, RP, TM, TQ, TS.
- Added DEUNA/DELUA (XU) support (Dave Hittner).
- Add DZ per-line logging.
1.6 18b PDP's
- Added support for 1-4 (PDP-9)/1-16 (PDP-15) additional
terminals.
1.7 PDP-10
- Added DEUNA/DELUA (XU) support (Dave Hittner).
1.8 VAX
- Added extended memory to 512MB (Mark Pizzolato).
- Added RXV21 support.
2. Bugs Fixed in 3.2-0
2.1 SCP
- Fixed double logging of SHOW BREAK (found by Mark Pizzolato).
- Fixed implementation of REG_VMIO.
2.2 Nova and Eclipse
- Fixed device enable/disable support (found by Bruce Ray).
2.3 PDP-1
- Fixed bug in LOAD (found by Mark Crispin).
2.4 PDP-10
- Fixed bug in floating point unpack.
- Fixed bug in FIXR (found by Phil Stone, fixed by Chris Smith).
2.6 PDP-11
- Fixed bug in RQ interrupt control (found by Tom Evans).
2.6 PDP-18B
- Fixed bug in PDP-15 XVM g_mode implementation.
- Fixed bug in PDP-15 indexed address calculation.
- Fixed bug in PDP-15 autoindexed address calculation.
- Fixed bugs in FPP-15 instruction decode.
- Fixed clock response to CAF.
- Fixed bug in hardware read-in mode bootstrap.
- Fixed PDP-15 XVM instruction decoding errors.
2.7 VAX
- Fixed PC read fault in EXTxV.
- Fixed PC write fault in INSV.
Bob Supnik