SIMH
The facts below are what the maker publishes about SIMH, checked and dated. Our editors have not written about it yet.
The facts
Each one read from SIMH's own pages, with the date it was checked.
What it does
- Build requirements
- The HP simulator source distributions are written in portable C, and the page says no additional libraries are needed to build them.checked 11 Oct 2026
- Downloads
- The HP simulator page offers source distributions and precompiled 32-bit Windows executables for Windows XP and later.checked 11 Oct 2026
- HP simulator scope
- The HP simulator page says its HP 2100 implementation does not model the 1000 L/A-Series machines.checked 11 Oct 2026
- License
- The V3 and Open SIMH V4 source code is licensed under an MIT-style open-source license.checked 11 Oct 2026
- No commercial pricing
- The site describes SIMH as open-source software and offers downloads, with no paid plans or prices stated on the pages reviewed.checked 11 Oct 2026
- Project goal
- The project aims to create highly portable system simulators and publish them as open-source software with freely available copies of significant or representative software.checked 11 Oct 2026
- Purpose
- SIMH is a collection of simulators for historically significant or otherwise interesting computer hardware and software.checked 11 Oct 2026
- Release
- The site's latest listed V3 source and documentation release is SIMH V3.12-5, updated July 16, 2024.checked 11 Oct 2026
- Release changes
- SIMH V3.12-5 release notes say the release is mostly bug fixes and adds Chaosnet support to the PDP-10 and PDP-11 simulators.checked 11 Oct 2026
- Simulator coverage
- SIMH V3.x includes simulators for systems including Data General Nova and Eclipse, DEC PDP and VAX systems, IBM systems, HP systems, and the MITS Altair 8800.checked 11 Oct 2026
- Software kits
- The site lists software kits for several simulated systems, and says some kits have licenses that restrict their use.checked 11 Oct 2026
- Software tools
- The site also provides tools for manipulating simulator file formats and cross-assembling code for the PDP-1, PDP-7, PDP-8, and PDP-11.checked 11 Oct 2026
- Support
- The site points users to documentation, help guides, and a SimH users' mailing list for support and questions.checked 11 Oct 2026
- Tools
- The site offers tools for manipulating simulator file formats and cross-assembling code for PDP-1, PDP-7, PDP-8, and PDP-11 systems.checked 11 Oct 2026
- V3 release
- The site lists SIMH V3.12-5 as the latest V3 source and documentation release, updated 16 July 2024.checked 11 Oct 2026
- V4 stream
- The site says the enhanced V4 stream contains additional simulators and is available on GitHub as Open-SimH.checked 11 Oct 2026
The company
- Founded
- 1993checked 28 Sep 2026
Where it runs
- HP platform support
- The HP simulator pages state that those simulators run on common PC and Mac platforms running Windows, Linux, FreeBSD, or macOS.checked 11 Oct 2026
- Machine coverage
- The V3 release lists simulators for systems including Data General, DEC, IBM, Interdata, HP, Honeywell, MITS Altair, and others.checked 11 Oct 2026
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