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simh.simh/0readme_ethernet.txt
Bob Supnik 4ffd3be790 Notes For V3.0-0 
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.
2011-04-15 08:34:08 -07:00

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This file contains information about the XQ/SIM_ETHER package.
-------------------------------------------------------------------------------
The XQ emulator is a host-independant software emulation of Digital's
DELQA (M7516) and DEQNA (M7504) Q-bus ethernet cards for the SIMH emulator.
The XQ emulator uses the Sim_Ether module to execute host-specific ethernet
packet reads and writes, since all operating systems talk to real ethernet
cards/controllers differently. The host-dependant Sim_Ether module currently
supports Windows, Linux, NetBSD, and OpenBSD.
Currently, the Sim_Ether module sets the selected ethernet card into
promiscuous mode to gather all packets, then filters out the packets that it
doesn't want. In Windows, packets having the same source MAC address as the
controller are ignored for WinPCAP compatibility (see Windows notes below).
If your ethernet card is plugged into a switch, the promiscuous mode setting
should not cause much of a problem, since the switch will still filter out
most of the undesirable traffic. You will only see "excessive" traffic if you
are on a direct or hub(repeater) segment.
-------------------------------------------------------------------------------
Windows notes:
1. The Windows-specific code uses the WinPCAP 3.0 package from
http://winpcap.polito.it. This package for windows simulates the libpcap
package that is freely available for unix systems.
2. You must *install* the WinPCAP runtime package.
3. The first time the WinPCAP driver is used, it will be dynamically loaded,
and the user must be an Administrator on the machine to do so. If you need
to run as an unprivileged user, you must set the service to autostart. See
the WinPCAP documentation for details on the static load workaround.
4. WinPCAP loops packet writes back into the read queue. This causes problems
since the XQ controller is not expecting to read it's own packet. A fix
to the packet read filter was added to reject packets from the current MAC,
but this defeats DECNET's duplicate node number detection scheme. A more
correct fix for WinPCAP will be explored as time allows.
Building on Windows:
1. Install WinPCAP 3.0.
2. Put the required .h files (bittypes,devioctl,ip6_misc,packet32,pcap,
pcap-stdinc).h from the WinPCAP 3.0 developer's kit in the compiler's path
3. Put the required .lib files (packet,wpcap).lib from the WinPCAP 3.0
developer's kit in the linker's path
4. If you're using Borland C++, use COFF2OMF to convert the .lib files into
a format that can be used by the compiler.
5. Define USE_NETWORK if you want the network functionality.
6. Build it!
-------------------------------------------------------------------------------
Linux, NetBSD, and OpenBSD notes:
1. You must run SIMH(scp) as root so that the ethernet card can be set into
promiscuous mode by the driver. Alternative methods for avoiding the
'run as root' requirement will be welcomed.
Building on Linux, NetBSD, and OpenBSD:
1. Get/install the libpcap package for your unix version. http://rpmfind.net
might be a useful site for finding the linux variants.
2. Use Make USE_NETWORK=1 if you want the network functionality.
3. Build it!
-------------------------------------------------------------------------------
VAX simulator support:
An OpenVMS VAX v7.2 system with DECNET Phase IV, MultiNet 4.4a, and LAT 5.3 has
been successfully run. Other testers have reported success booting NetBSD also.
PDP11 simulator support:
An RT-11 v5.3 system with a freeware TCP/IP stack has been successfully run.
Other testers have reported that RSX with DECNET and the NetBSD operating
systems also work. RSTS/E v10.1 has preliminary support - RSTS/E boots and
enables the XH (XQ) device - DECNET and LAT software have not been tested.
-------------------------------------------------------------------------------
Things planned for future releases:
1. PDP-11 bootstrap/bootrom
2. Full MOP implementation
3. DESQA support (if someone can get me the user manuals)
4. DETQA support [DELQA-Turbo] (I have the manual)
5. DEUNA/DELUA support
-------------------------------------------------------------------------------
Things which I need help with:
1. Porting Sim_Ether packet driver to other host platforms, especially VMS.
2. Information about Remote MOP processing
3. VAX/PDP-11 hardware diagnotics image files and docs, to test XQ thoroughly.
4. Feedback on operation with other VAX/PDP-11 OS's.
-------------------------------------------------------------------------------
Please send all patches, questions, feedback, clarifications, and help to:
dhittner AT northropgrumman DOT com
Thanks, and Enjoy!!
Dave
===============================================================================
Change Log
===============================================================================
05-Jun-03 Release:
1. Added SET/SHOW XQ STATS
2. Added SHOW XQ FILTERS
3. Added ability to split received packet into multiple buffers
4. Added explicit runt & giant packet processing
-------------------------------------------------------------------------------
30-May-03 Release:
1. Corrected bug in xq_setmac introduced in v3.0 (multiple people)
2. Made XQ receive buffer allocation dynamic to reduce scp executable size
3. Optimized some structs, removed legacy variables (Mark Pizzolato)
4. Changed #ifdef WIN32 to _WIN32 for consistancy
-------------------------------------------------------------------------------
06-May-03 Release:
1. Added second XQ controller
2. Added SIMH v3.0 compatibility
3. Removed SET ADDRESS functionality
-------------------------------------------------------------------------------
10-Apr-03 Release:
1. Added preliminary support for RSTS/E
2. Added PDP-11 bootrom load via CSR flags
3. Support for SPARC linux (thanks to Mark Pizzolato)
-------------------------------------------------------------------------------
11-Mar-03 Release:
1. Added support for RT-11 TCP/IP
2. Corrected interrupts (thanks to Tom Evans and Bob Supnik)
3. Moved change log to the bottom of the readme file, cleaned up document
-------------------------------------------------------------------------------
16-Jan-03 Release:
1. Added VMScluster support (thanks to Mark Pizzolato)
2. Verified VAX remote boot functionality (>>>B XQA0)
3. Added major performance enhancements (thanks to Mark Pizzolato again)
4. Changed _DEBUG tracers to XQ_DEBUG and ETH_DEBUG
5. Added local packet processing
6. Added system id broadcast
-------------------------------------------------------------------------------
08-Nov-02 Release:
1. Added USE_NETWORK conditional to Sim_Ether
2. Fixed behaviour of SHOW XQ ETH if no devices exist
3. Added OpenBSD support to Sim_Ether (courtesy of Federico Schwindt)
4. Added ethX detection simplification (from Megan Gentry)
===============================================================================
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