This adds support for the "framer" device, which is a USB-connected
device built around a Raspberry Pico that connects to a synchronous
line, either RS-232 or DEC "integral modem" coax connection. It
implements the framing portion of DDCMP: clock recovery for the
integral modem case, byte sync, and DDCMP frame handling including
CRC. The actual DDCMP protocol state machine, with its handling of
sequencing, timeout and retransmit, etc. is left to the host
software. All the design files for the framer may be found at
https://github.com/pkoning2/ddcmp .
This commit adds code to drive the framer from the TMXR library,
allowing it to be used either from simulated DMC-11 or simulated
DUP-11 devices. Both have been tested, using RSTS/E, RSX-11/M+, and
TOPS-20.
Fixed the one-digit limit on eth<n> device names, the limit is now 2.
Add optional enabling of broadcast address to hash based filter model.
LANCE based devices which use its AUTODIN II based hash generally
match the broadcast address independent of the contents of the
multicast hash.
This change to XQ mostly undoes the prior change to pdp11_xq and
brings the functionality into sim_ether so that it is generally available
for future ethernet devices.
Some dependent packages on some platforms may also define HAVE_DLOPEN
and that definition may have different syntax or semantics. This change
avoids the potential symbol conflict.
As reported in #1098
sim> SET XQ MAC=aa:bb:cc:dd:ee:ff{/bits}{>filespec}
where:
- all of the aa:bb:cc:dd:ee:ff values must be hex digits
- bits is the number of bits which are to be taken from the supplied
MAC aa:bb:cc:dd:ee:ff with legal values from 16 to 48 and a default
of 48 bits.
- filespec specifies a file which contains the MAC address to be used
and if it doesn't exist an appropriate generated address will be stored
in this file and a subsequent SET MAC invocation specifying the same
file will use the value stored in the file rather than generating a new
MAC.
As discussed in #317
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.
Avoid permanent network network hangs when a network transport starts to return errors for various reasons.
These hangs also result in at least one thread in a CPU bound loop attempting to read on a pcap connection which will never be useful again.
When transmit or receive errors occur, the invoking thread sleeps for 1 second and subsequent operations proceed. When the total of read + write errors reaches a multiple of ETH_ERROR_REOPEN_THRESHOLD the current transport connection (usually pcap) is closed and re-opened after a ETH_ERROR_REOPEN_PAUSE second delay. If the open succeeds, we're happy. If it fails, then the link behaves as if it were never attached until some subsequent operator intervention is performed.
Activities which are known to induce this problems include (but are not limited to) when a simulator is running in a Windows Virtual Machine on a Hyper-V host system and the Hyper-V host system performs a SAVE and a subsequent Restart of the Guest Windows Virtual Machine. This operation can occur due to specific operator requests or merely when the Hyper-V host system reboots.
Migrated the XQ help to the hierarchical help model. This is a work in progress which will eventually merge much from 0readme_ethernet.txt into the device help.
Some of this behavior was previously available in the pdp11_xq simulation for the DELQA device variants, but not the DEQNA. This adds the behavior for all ethernet devices.
The helps to avoid MAC address conflicts since the Ethernet physical address is completely user settable, and starts with a static value. Multiple simulators on the same LAN will have conflicting addresses if they don't specifically set unique values.
pdp11_xq.c, pdp11_xq.h
- Added emulation and visibility to the LEDs which were on the physical DEQNA/DELQA network boards. "show xq: will now display the LED state in addition to the other useful things.
- Added debugging of loopback packet data
- Avoided padding on short loopback packets
- Added support for extended length loopback packets (up to 1600 bytes) which is described in the DEQNA manual and used by the MicroVAX I boot ROM. Recieve such packets with the LONG error indicator.
- Returned 'reserved' status bits as 1's in received packet status word 1.
- Added debug display of transmit and receive Buffer Descriptor List contents.
sim_ether.c, sim_ether.h
- Added support for extended/oversized packets.
Fixed OS/X build issues from Tony Nickolson
Fixed OS/X tap networking startup
Added cygwin host NIC hardware address determination
Made *nix host NIC hardware address determination more robust
VMS engineers designed the address conflict strategy when essentially all LANs were single collision domains (i.e. ALL nodes which might be affected by an address conflict were physically present on a single Ethernet cable which might have been extended by a couple of repeaters). Since that time, essentially no networks are single collision domains. Thick and thinwire Ethernet cables don’t exist and very few networks even have hubs. Today, essentially all LANs are deployed using one or more layers of network switches. In a switched LAN environment, the switches on the LAN ‘learn’ which ports on the LAN source traffic from which MAC addresses and then forward traffic destined for particular MAC address to the appropriate ports. If a particular MAC address is already in use somewhere on the LAN, then the switches ‘know’ where it is. The host based test using the loopback protocol is poorly designed to detect this condition. This test is performed by the host first changing the device’s Physical MAC address to the address which is to be tested, and then sending a loopback packet FROM AND TO this MAC address with a loopback reply to be sent by a system which may be currently using the MAC address. If no reply is received, then the MAC address is presumed to be unused. The sending of this packet will result in its delivery to the right system since the switch port/MAC address tables know where to deliver packets destined to this MAC address, however the response it generates won’t be delivered to the system performing the test since the switches on the LAN won’t know about the local port being the right target for packets with this MAC address. A better test design to detect these conflicts would be for the testing system to send a loopback packet FROM the current physical MAC address (BEFORE changing it) TO the MAC address being tested with the loopback response coming to the current physical MAC address of the device. If a response is received, then the address is in use and the attempt to change the device’s MAC address should fail. Since we can’t change the software running in these simulators to implement this better conflict detection approach, we can still ‘do the right thing’ in the sim_ether layer. We’re already handling the loopback test packets specially since we always had to avoid receiving the packets which were being sent, but needed to allow for the incoming loopback packets to be properly dealt with. We can extend this current special handling to change outgoing ‘loopback to self’ packets to have source AND loopback destination addresses in the packets to be the host NIC’s physical address. The switch network will already know the correct MAC/port relationship for the host NIC’s physical address, so loopback response packets will be delivered as needed.
Fixed device name compare in eth_getname_byname to compare the whole name
Removed unused num field in eth_list structure
Extended the number of devices supported since some platforms may have many libpcap accessable devices but only a few basic Ethernet ones
Fixed handling of Jumbo Packets and LSO (Large Send Offload) behaviorst to:
1) Avoid truncation of very large sends
2) handle the case where the host network stack may not populate the IP header length for a large send.
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.
1.2 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 source set has been extensively overhauled. For correct
viewing, set Visual C++ or Emacs to have tab stops every 4
characters.
1. New Features
1.1 3.5-0
1.1.1 All Ethernet devices
- Added Windows user-defined adapter names (from Timothe Litt)
1.1.2 Interdata, SDS, HP, PDP-8, PDP-18b terminal multiplexors
- Added support for SET <unit>n DISCONNECT
1.1.3 VAX
- Added latent QDSS support
- Revised autoconfigure to handle QDSS
1.1.4 PDP-11
- Revised autoconfigure to handle more cases
1.2 3.5-1
No new features
1.3 3.5-2
1.3.1 All ASCII terminals
- Most ASCII terminal emulators have supported 7-bit and 8-bit
operation; where required, they have also supported an upper-
case only or KSR-emulation mode. This release adds a new mode,
7P, for 7-bit printing characters. In 7P mode, non-printing
characters in the range 0-31 (decimal), and 127 (decimal), are
automatically suppressed. This prevents printing of fill
characters under Windows.
The printable character set for ASCII code values 0-31 can be
changed with the SET CONSOLE PCHAR command. Code value 127
(DELETE) is always suppressed.
1.3.2 VAX-11/780
- First release. The VAX-11/780 has successfully run VMS V7.2. The
commercial instructions and compatability mode have not been
extensively tested. The Ethernet controller is not working yet
and is disabled.
2. Bugs Fixed
2.1 3.5-0
2.1.1 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
2.1.2 1401
- Fixed bug, CPU reset was clearing SSB through SSG
2.1.3 PDP-11
- Fixed bug in VH vector display routine
- Fixed XU runt packet processing (found by Tim Chapman)
2.1.4 Interdata
- Fixed bug in SHOW PAS CONN/STATS
- Fixed potential integer overflow exception in divide
2.1.5 SDS
- Fixed bug in SHOW MUX CONN/STATS
2.1.6 HP
- Fixed bug in SHOW MUX CONN/STATS
2.1.7 PDP-8
- Fixed bug in SHOW TTIX CONN/STATS
- Fixed bug in SET/SHOW TTOXn LOG
2.1.8 PDP-18b
- Fixed bug in SHOW TTIX CONN/STATS
- Fixed bug in SET/SHOW TTOXn LOG
2.1.9 Nova, Eclipse
- Fixed potential integer overflow exception in divide
2.2 3.5-1
2.2.1 1401
- Changed character encodings to be compatible with Pierce 709X simulator
- Added mode for old/new character encodings
2.2.2 1620
- Changed character encodings to be compatible with Pierce 709X simulator
2.2.3 PDP-10
- Changed MOVNI to eliminate GCC warning
2.2.4 VAX
- Fixed bug in structure definitions with 32b compilation options
- Fixed bug in autoconfiguration table
2.2.5 PDP-11
- Fixed bug in autoconfiguration table
2.3 3.5-2
2.3.1 PDP-10
- RP: fixed drive clear not to clear disk address
2.3.2 PDP-11 (VAX, VAX-11/780, for shared peripherals)
- HK: fixed overlap seek interaction with drive select, drive clear, etc
- RQ, TM, TQ, TS, TU: widened address display to 64b when USE_ADDR64 option selected
- TU: changed default adapter from TM02 to TM03 (required by VMS)
- RP: fixed drive clear not to clear disk address
- RP, TU: fixed device enable/disable to enabled/disable Massbus adapter as well
- XQ: fixed register access alignment bug (found by Doug Carman)
2.3.3 PDP-8
- RL: fixed IOT 61 decoding bug (found by David Gesswein)
- DF, DT, RF: fixed register access alignment bug (found by Doug Carman)
2.3.4 VAX
- Fixed CVTfi to trap on integer overflow if PSW<iv> is set
- Fixed breakpoint detection when USE_ADDR64 option selected
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
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).
Because some key files have changed, V3.0 should be unzipped to a
clean directory.
1. New Features in 3.0-0
1.1 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
1.2 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.
1.3 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).
2. Bugs Fixed in 3.01-0
2.1 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).
2.2 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.
2.3 Nova
- Fixed DSK variable size interaction with restore.
2.4 PDP-1
- Fixed DT variable size interaction with restore.
2.5 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.
2.6 PDP-18B
- Fixed DT, RF variable size interaction with restore.
- Fixed MT bug in MTTR.
2.7 PDP-8
- Fixed DT, DF, RF, RX variable size interaction with restore.
- Fixed MT bug in SKTR.
2.8 HP2100
- Fixed bug in DP (13210A controller only), DQ read status.
- Fixed bug in DP, DQ seek complete.
2.9 GRI
- Fixed bug in SC queue pointer management.
3. New Features in 3.0 vs prior releases
N/A
4. Bugs Fixed in 3.0 vs prior releases
N/A
5. General Notes
WARNING: The RESTORE command has changed. RESTORE will now
detach an attached file on a unit, if that unit did not have
an attached file in the saved configuration. This is required
to assure that the unit flags and the file state are consistent.
WARNING: The compilation scheme for the PDP-10, PDP-11, and VAX
has changed. Use one of the supplied build files, or read the
documentation carefully, before compiling any of these simulators.
1. New Features in 2.10-2
The build procedures have changed. There is only one UNIX makefile.
To compile without Ethernet support, simply type
gmake {target|all}
To compile with Ethernet support, type
gmake USE_NETWORK=1 {target|all}
The Mingw batch files require Mingw release 2 and invoke the Unix
makefile. There are still separate batch files for compilation
with or without Ethernet support.
1.1 SCP and Libraries
- The EVAL command will evaluate a symbolic type-in and display
it in numeric form.
- The ! command (with no arguments) will launch the host operating
system command shell. The ! command (with an argument) executes
the argument as a host operating system command. (Code from
Mark Pizzolato)
- Telnet sessions now recognize BREAK. How a BREAK is transmitted
dependent on the particular Telnet client. (Code from Mark
Pizzolato)
- The sockets library includes code for active connections as
well as listening connections.
- The RESTORE command will restore saved memory size, if the
simulator supports dynamic memory resizing.
1.2 PDP-1
- The PDP-1 supports the Type 24 serial drum (based on recently
discovered documents).
1.3 18b PDP's
- The PDP-4 supports the Type 24 serial drum (based on recently
discovered documents).
1.4 PDP-11
- The PDP-11 implements a stub DEUNA/DELUA (XU). The real XU
module will be included in a later release.
1.5 PDP-10
- The PDP-10 implements a stub DEUNA/DELUA (XU). The real XU
module will be included in a later release.
1.6 HP 2100
- The IOP microinstruction set is supported for the 21MX as well
as the 2100.
- The HP2100 supports the Access Interprocessor Link (IPL).
1.7 VAX
- If the VAX console is attached to a Telnet session, BREAK is
interpreted as console halt.
- The SET/SHOW HISTORY commands enable and display a history of
the most recently executed instructions. (Code from Mark
Pizzolato)
1.8 Terminals Multiplexors
- BREAK detection was added to the HP, DEC, and Interdata terminal
multiplexors.
1.9 Interdata 16b and 32b
- First release. UNIX is not yet working.
1.10 SDS 940
- First release.
2. Bugs Fixed in 2.10-2
- PDP-11 console must default to 7b for early UNIX compatibility.
- PDP-11/VAX TMSCP emulator was using the wrong packet length for
read/write end packets.
- Telnet IAC+IAC processing was fixed, both for input and output
(found by Mark Pizzolato).
- PDP-11/VAX Ethernet setting flag bits wrong for chained
descriptors (found by Mark Pizzolato).
3. New Features in 2.10 vs prior releases
3.1 SCP and Libraries
- The VT emulation package has been replaced by the capability
to remote the console to a Telnet session. Telnet clients
typically have more complete and robust VT100 emulation.
- Simulated devices may now have statically allocated buffers,
in addition to dynamically allocated buffers or disk-based
data stores.
- The DO command now takes substitutable arguments (max 9).
In command files, %n represents substitutable argument n.
- The initial command line is now interpreted as the command
name and substitutable arguments for a DO command. This is
backward compatible to prior versions.
- The initial command line parses switches. -Q is interpreted
as quiet mode; informational messages are suppressed.
- The HELP command now takes an optional argument. HELP <cmd>
types help on the specified command.
- Hooks have been added for implementing GUI-based consoles,
as well as simulator-specific command extensions. A few
internal data structures and definitions have changed.
- Two new routines (tmxr_open_master, tmxr_close_master) have
been added to sim_tmxr.c. The calling sequence for
sim_accept_conn has been changed in sim_sock.c.
- The calling sequence for the VM boot routine has been modified
to add an additional parameter.
- SAVE now saves, and GET now restores, controller and unit flags.
- Library sim_ether.c has been added for Ethernet support.
3.2 VAX
- Non-volatile RAM (NVR) can behave either like a memory or like
a disk-based peripheral. If unattached, it behaves like memory
and is saved and restored by SAVE and RESTORE, respectively.
If attached, its contents are loaded from disk by ATTACH and
written back to disk at DETACH and EXIT.
- SHOW <device> VECTOR displays the device's interrupt vector.
A few devices allow the vector to be changed with SET
<device> VECTOR=nnn.
- SHOW CPU IOSPACE displays the I/O space address map.
- The TK50 (TMSCP tape) has been added.
- The DEQNA/DELQA (Qbus Ethernet controllers) have been added.
- Autoconfiguration support has been added.
- The paper tape reader has been removed from vax_stddev.c and
now references a common implementation file, dec_pt.h.
- Examine and deposit switches now work on all devices, not just
the CPU.
- Device address conflicts are not detected until simulation starts.
3.3 PDP-11
- SHOW <device> VECTOR displays the device's interrupt vector.
Most devices allow the vector to be changed with SET
<device> VECTOR=nnn.
- SHOW CPU IOSPACE displays the I/O space address map.
- The TK50 (TMSCP tape), RK611/RK06/RK07 (cartridge disk),
RX211 (double density floppy), and KW11P programmable clock
have been added.
- The DEQNA/DELQA (Qbus Ethernet controllers) have been added.
- Autoconfiguration support has been added.
- The paper tape reader has been removed from pdp11_stddev.c and
now references a common implementation file, dec_pt.h.
- Device bootstraps now use the actual CSR specified by the
SET ADDRESS command, rather than just the default CSR. Note
that PDP-11 operating systems may NOT support booting with
non-standard addresses.
- Specifying more than 256KB of memory, or changing the bus
configuration, causes all peripherals that are not compatible
with the current bus configuration to be disabled.
- Device address conflicts are not detected until simulation starts.
3.4 PDP-10
- SHOW <device> VECTOR displays the device's interrupt vector.
A few devices allow the vector to be changed with SET
<device> VECTOR=nnn.
- SHOW CPU IOSPACE displays the I/O space address map.
- The RX211 (double density floppy) has been added; it is off
by default.
- The paper tape now references a common implementation file,
dec_pt.h.
- Device address conflicts are not detected until simulation starts.
3.5 PDP-1
- DECtape (then known as MicroTape) support has been added.
- The line printer and DECtape can be disabled and enabled.
3.6 PDP-8
- The RX28 (double density floppy) has been added as an option to
the existing RX8E controller.
- SHOW <device> DEVNO displays the device's device number. Most
devices allow the device number to be changed with SET <device>
DEVNO=nnn.
- Device number conflicts are not detected until simulation starts.
3.7 IBM 1620
- The IBM 1620 simulator has been released.
3.8 AltairZ80
- A hard drive has been added for increased storage.
- Several bugs have been fixed.
3.9 HP 2100
- The 12845A has been added and made the default line printer (LPT).
The 12653A has been renamed LPS and is off by default. It also
supports the diagnostic functions needed to run the DCPC and DMS
diagnostics.
- The 12557A/13210A disk defaults to the 13210A (7900/7901).
- The 12559A magtape is off by default.
- New CPU options (EAU/NOEAU) enable/disable the extended arithmetic
instructions for the 2116. These instructions are standard on
the 2100 and 21MX.
- New CPU options (MPR/NOMPR) enable/disable memory protect for the
2100 and 21MX.
- New CPU options (DMS/NODMS) enable/disable the dynamic mapping
instructions for the 21MX.
- The 12539 timebase generator autocalibrates.
3.10 Simulated Magtapes
- Simulated magtapes recognize end of file and the marker
0xFFFFFFFF as end of medium. Only the TMSCP tape simulator
can generate an end of medium marker.
- The error handling in simulated magtapes was overhauled to be
consistent through all simulators.
3.11 Simulated DECtapes
- Added support for RT11 image file format (256 x 16b) to DECtapes.
4. Bugs Fixed in 2.10 vs prior releases
- TS11/TSV05 was not simulating the XS0_MOT bit, causing failures
under VMS. In addition, two of the CTL options were coded
interchanged.
- IBM 1401 tape was not setting a word mark under group mark for
load mode reads. This caused the diagnostics to crash.
- SCP bugs in ssh_break and set_logon were fixed (found by Dave
Hittner).
- Numerous bugs in the HP 2100 extended arithmetic, floating point,
21MX, DMS, and IOP instructions were fixed. Bugs were also fixed
in the memory protect and DMS functions. The moving head disks
(DP, DQ) were revised to simulate the hardware more accurately.
Missing functions in DQ (address skip, read address) were added.
- PDP-10 tape wouldn't boot, and then wouldn't read (reported by
Michael Thompson and Harris Newman, respectively)
- PDP-1 typewriter is half duplex, with only one shift state for
both input and output (found by Derek Peschel)
5. General Notes
WARNING: V2.10 has reorganized and renamed some of the definition
files for the PDP-10, PDP-11, and VAX. Be sure to delete all
previous source files before you unpack the Zip archive, or
unpack it into a new directory structure.
WARNING: V2.10 has a new, more comprehensive save file format.
Restoring save files from previous releases will cause 'invalid
register' errors and loss of CPU option flags, device enable/
disable flags, unit online/offline flags, and unit writelock
flags.
WARNING: If you are using Visual Studio .NET through the IDE,
be sure to turn off the /Wp64 flag in the project settings, or
dozens of spurious errors will be generated.
WARNING: Compiling Ethernet support under Windows requires
extra steps; see the Ethernet readme file. Ethernet support is
currently available only for Windows, Linux, NetBSD, and OpenBSD.
