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mirror of https://github.com/open-simh/simh.git synced 2026-01-13 07:20:12 +00:00
Seth Morabito 3e0214aed0 3B2: Multiple bugfixes and improvements
- Allow 3 MB RAM configuration (previously only 1MB, 2MB, and 4MB
  configurations were allowed)
- Allow SCSI CIO card to be used under 3B2/400 emulation (previously
  it could only be used under 3B2/700 emulation)
- Improved CTC, PORTS, and SCSI diagnostic checks
- Fixed a bug in IDISK device that allowed impossible disk
  configurations

The last update is a breaking change that disables the HD161 disk
type by default, since real 3B2 hardware does not support it. The
disk type will still allowed in backward compatibility mode through
use of the "SET IDISK LARGE" command.
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Open SIMH machine simulator

This is the codebase of SIMH, a framework and collection of computer system simulators.

SIMH was created by Bob Supnik, originally at Digital Equipment Corporation, and extended by contributions of many other people. It is now an open source project, licensed under an MIT open source license (see LICENSE.txt for the specific wording). The project gatekeepers are the members of the SIMH Steering Group. We welcome and encourage contributions from all. Contributions will be covered by the project license.

The Open SIMH code base was taken from a code base maintained by Mark Pizzolato as of 12 May 2022. From that point onward there is no connection between that source and the Open SIMH code base. A detailed listing of features as of that point may be found in SIMH-V4-status.

PLEASE NOTE

Do not contribute material taken from github.com/simh/simh unless you are the author of the material in question.

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Description
The Open SIMH simulators package
Readme 140 MiB
Languages
C 96.9%
Assembly 1%
CMake 0.5%
Batchfile 0.4%
Makefile 0.4%
Other 0.5%