Coverity flagged one magtape simulator for having fewer case breakouts
than the range of MTSE_x errors, after they were expanded for
MTSE_LEOT (listed as "V4 compatibility") and MTSE_RUNAWAY (for
Dave Bryan's implementation of erase and erase gap).
According to Dave, it turns out that MTSE_RUNAWAY can only be
returned if the magtape simulator supports and implements a density
specification and the ERASE function. The simulators Bob Supnik wrote
don't meet that criteria, so the expanded errors can't be returned.
Simply add a "default" case to the map logic returning SCPE_IERR for
unexpected cases.
Historically this functionality was reimplemented within each
DEVICE simulator often with slightly different implementations
and inconsistencies. Solving this globally within SCP required
changes in many places, but should henceforth be reasonably
managed.
As discussed in #1034
These changes facilitate more robust parameter type checking and helps
to identify unexpected coding errors.
Most simulators can now also be compiled with a C++ compiler without
warnings.
Additionally, these changes have also been configured to facilitate easier
backporting of simulator and device simulation modules to run under the
simh v3.9+ SCP framework.
This summer a group of us worked together to resurrect the original ARPAnet IMP software, and I’m now happy to say that the IMP lives again in simulation. It’s possible to run the original IMP software on a modified version of the H316 simh and to set up a virtual network of simulated IMPs talking to each other. IMP to IMP connections, which would have originally been carried over leased telephone lines, are tunneled over IP. As far as we can tell, everything works pretty much as it did in the early 1970s. IMPs are able to exchange routing information, console to console communications, network statistics, and they would carry host traffic if there were hosts on the network. The hooks are in there to allow simh to support the IMP side of the 1822 host interface, and the next step would be to recover the OS for an ARPAnet era host and then extend the corresponding simulator to talk to the IMP simulation.
The makefile now works for Linux and most Unix's. However, 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.
1.3 3.8-2
1.3.1 SCP and libraries
- Added line history capability for *nix hosts.
- Added "SHOW SHOW" and "SHOW <dev> SHOW" commands.
1.3.2 1401
- Added "no rewind" option to magtape boot.
1.3.3 PDP-11
- Added RD32 support to RQ
- Added debug support to RL
1.3.4 PDP-8
- Added FPP support (many thanks to Rick Murphy for debugging the code)
1.3.5 VAX-11/780
- Added AUTORESTART switch support, and VMS REBOOT command support
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.
1.1.2 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.
1. New Features
1.1 3.7-0
1.1.1 SCP
- Added SET THROTTLE and SET NOTHROTTLE commands to regulate simulator
execution rate and host resource utilization.
- Added idle support (based on work by Mark Pizzolato).
- Added -e to control error processing in nested DO commands (from
Dave Bryan).
1.1.2 HP2100
- Added Double Integer instructions, 1000-F CPU, and Floating Point
Processor (from Dave Bryan).
- Added 2114 and 2115 CPUs, 12607B and 12578A DMA controllers, and
21xx binary loader protection (from Dave Bryan).
1.1.3 Interdata
- Added SET IDLE and SET NOIDLE commands to idle the simulator in wait
state.
1.1.4 PDP-11
- Added SET IDLE and SET NOIDLE commands to idle the simulator in wait
state (WAIT instruction executed).
- Added TA11/TU60 cassette support.
1.1.5 PDP-8
- Added SET IDLE and SET NOIDLE commands to idle the simulator in wait
state (keyboard poll loop or jump-to-self).
- Added TA8E/TU60 cassette support.
1.1.6 PDP-1
- Added support for 16-channel sequence break system.
- Added support for PDP-1D extended features and timesharing clock.
- Added support for Type 630 data communications subsystem.
1.1.6 PDP-4/7/9/15
- Added SET IDLE and SET NOIDLE commands to idle the simulator in wait
state (keyboard poll loop or jump-to-self).
1.1.7 VAX, VAX780
- Added SET IDLE and SET NOIDLE commands to idle the simulator in wait
state (more than 200 cycles at IPL's 0, 1, or 3 in kernel mode).
1.1.8 PDP-10
- Added SET IDLE and SET NOIDLE commands to idle the simulator in wait
state (operating system dependent).
- Added CD20 (CD11) support.
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 3.3-2
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)
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 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.
RESTRICTION: The FP15 and XVM features of the PDP-15 are only partially
debugged. Do NOT enable these features for normal operations.
1. New Features in 3.1-0
1.1 SCP and libraries
- Added simulated Ethernet support for VMS, FreeBSD, Mac OS/X.
- Added status return to tmxr_putc_ln.
- Added sim_putchar_s to handle possible output stalls.
1.2 All DECtapes
- Added "DECtape off reel" error stop.
1.3 All Asynchronous Consoles
- Added support for output congestion stall if using a Telnet connection.
1.4 PDP-1
- Added Type 23 parallel drum support.
1.5 PDP-8
- Added instruction history.
- Added TSC8-75 option support for ETOS.
- Added TD8E DECtape support.
1.6 PDP-18b
- Added instruction history.
- Changed PDP-9, PDP-15 API default to enabled.
1.7 PDP-11
- Added support for 18b only Qbus devices.
- Formalized bus and addressing definitions.
- Added control to enable/disable autoconfiguration.
- Added stub support for second Unibus Ethernet controller.
1.7 Interdata 32b
- Added instruction history.
1.8 Eclipse
- Added floating point support.
- Added programmable interval timer support.
1.9 H316
- Added DMA/DMC support.
- Added fixed head disk support.
- Added moving head disk support.
- Added magtape support.
1.10 IBM 1130 (Brian Knittel)
- Added support for physical card reader, using the Cardread
interface (www.ibm1130.org/sim/downloads).
- Added support for physical printer (flushes output buffer after
each line).
2. Bugs Fixed in 3.1-0
2.1 SCP and libraries
- Fixed numerous bugs in Ethernet library.
2.2 All DECtapes
- Fixed reverse checksum value in 'read all' mode.
- Simplified (and sped up) timing.
2.3 PDP-8
- Fixed bug in RX28 read status (found by Charles Dickman).
- Fixed RX28 double density write.
2.4 PDP-18b
- Fixed autoincrement bug in PDP-4, PDP-7, PDP-9.
2.5 PDP-11/VAX
- Revised RQ MB->LBN conversion for greater accuracy.
- Fixed bug in IO configuration (found by David Hittner).
- Fixed bug with multiple RQ RAUSER drives.
- Fixed bug in second Qbus Ethernet controller interrupts.
2.6 Nova/Eclipse
- Fixed bugs in DKP flag clear, map setup, map usage (Charles Owen).
- Fixed bug in MT, reset completes despite I/O reset (Charles Owen).
- Fixed bug in MT, space operations return word count (Charles Owen).
2.7 IBM 1130 (Brian Knittel)
- Fixed bug in setting carry bit in subtract and subtract double.
- Fixed timing problem in console printer simulation.
2.8 1620
- Fixed bug in branch digit (found by Dave Babcock).
3. New Features in 3.0 vs prior releases
3.1 SCP and Libraries
- Added ASSIGN/DEASSIGN (logical name) commands.
- Changed RESTORE to unconditionally detach files.
- Added E11 and TPC format support to magtape library.
- Fixed bug in SHOW CONNECTIONS.
- Added USE_ADDR64 support.
3.2 All magtapes
- Magtapes support SIMH format, E11 format, and TPC format (read only).
- SET <tape_unit> FORMAT=format sets the specified tape unit's format.
- SHOW <tape_unit> FORMAT displays the specified tape unit's format.
- Tape format can also be set as part of the ATTACH command, using
the -F switch.
3.3 VAX
- VAX can be compiled without USE_INT64.
- If compiled with USE_INT64 and USE_ADDR64, RQ and TQ controllers support
files > 2GB.
- VAX ROM has speed control (SET ROM DELAY/NODELAY).
3.4 PDP-1
- Added block loader format support to LOAD.
- Changed BOOT PTR to allow loading of all of the first bank of memory.
- The LOAD command takes an optional argument specifying the memory field
to be loaded.
- The PTR BOOT command takes its starting memory field from the TA (address
switch) register.
3.5 PDP-18b Family
- Added PDP-4 EAE support.
- Added PDP-15 FP15 support.
- Added PDP-15 XVM support.
- Added PDP-15 "re-entrancy ECO".
- Added PDP-7, PDP-9, PDP-15 hardware RIM loader support in BOOT PTR.
4. Bugs Fixed in 3.0 vs prior releases
4.1 SCP and Libraries
- Fixed end of file problem in dep, idep.
- Fixed handling of trailing spaces in dep, idep.
4.2 VAX
- Fixed CVTfi bug: integer overflow not set if exponent out of range
- Fixed EMODx bugs:
o First and second operands reversed
o Separated fraction received wrong exponent
o Overflow calculation on separated integer incorrect
o Fraction not set to zero if exponent out of range
- Fixed interval timer and ROM access to pass power-up self-test even on very
fast host processors (fixes from Mark Pizzolato).
- Fixed bug in user disk size (found by Chaskiel M Grundman).
4.3 1401
- Fixed mnemonic, instruction lengths, and reverse scan length check bug for MCS.
- Fixed MCE bug, BS off by 1 if zero suppress.
- Fixed chaining bug, D lost if return to SCP.
- Fixed H branch, branch occurs after continue.
- Added check for invalid 8 character MCW, LCA.
- Fixed magtape load-mode end of record response.
- Revised fetch to model hardware more closely.
- Fixed tape read end-of-record handling based on real 1401.
- Added diagnostic read (space forward).
4.4 Nova
- Fixed DSK variable size interaction with restore.
- Fixed bug in DSK set size routine.
4.5 PDP-1
- Fixed DT variable size interaction with restore.
- Updated CPU, line printer, standard devices to detect indefinite I/O wait.
- Fixed incorrect logical, missing activate, break in drum simulator.
- Fixed bugs in instruction decoding, overprinting for line printer.
- Fixed system hang if continue after PTR error.
- Fixed PTR to start/stop on successive rpa instructions.
4.6 PDP-11
- Fixed DT variable size interaction with restore.
- Fixed bug in MMR1 update (found by Tim Stark).
- Added XQ features and fixed bugs:
o Corrected XQ interrupts on IE state transition (code by Tom Evans).
o Added XQ interrupt clear on soft reset.
o Removed XQ interrupt when setting XL or RL (multiple people).
o Added SET/SHOW XQ STATS.
o Added SHOW XQ FILTERS.
o Added ability to split received packet into multiple buffers.
o Added explicit runt and giant packet processing.
- Fixed bug in user disk size (found by Chaskiel M Grundman).
4.7 PDP-18B
- Fixed DT, RF variable size interaction with restore.
- Fixed MT bug in MTTR.
- Fixed bug in PDP-4 line printer overprinting.
- Fixed bug in PDP-15 memory protect/skip interaction.
- Fixed bug in RF set size routine.
- Increased PTP TIME for PDP-15 operating systems.
- Fixed priorities in PDP-15 API (differs from PDP-9).
- Fixed sign handling in PDP-15 EAE unsigned mul/div (differs from PDP-9).
- Fixed bug in CAF, clears API subsystem.
4.8 PDP-8
- Fixed DT, DF, RF, RX variable size interaction with restore.
- Fixed MT bug in SKTR.
- Fixed bug in DF, RF set size routine.
4.9 HP2100
- Fixed bug in DP (13210A controller only), DQ read status.
- Fixed bug in DP, DQ seek complete.
- Fixed DR drum sizes.
- Fixed DR variable capacity interaction with SAVE/RESTORE.
4.10 GRI
- Fixed bug in SC queue pointer management.
4.11 PDP-10
- Fixed bug in RP read header.
4.12 Ibm1130
- Fixed bugs found by APL 1130.
4.13 Altairz80
- Fixed bug in real-time clock on Windows host.
4.14 1620
- Fixed bug in immediate index add (found by Michael Short).
