SIMH

SIMH is a highly portable, multi-system emulator which runs on Windows, Linux, macOS, FreeBSD, OpenBSD, NetBSD and OpenVMS. It is maintained by Bob Supnik, a former DEC engineer and DEC vice president, and has been in development in one form or another since the 1960s.

SIMH
Developer(s)Robert M. Supnik
Initial release1993[1]
Stable release
3.10 / February 24, 2019 (2019-02-24)
Preview release
4.0
Repository
Written inC
Operating systemWindows, Linux, macOS, FreeBSD, OpenBSD, NetBSD, OpenVMS
Platformx86, IA-64, PowerPC, SPARC, ARM
TypeHardware virtualization
LicenseMIT (modified)
Websitesimh.trailing-edge.com

History

SIMH was based on a much older systems emulator called MIMIC, which was written in the late 1960s at Applied Data Research.[1] SIMH was started in 1993 with the purpose of preserving minicomputer hardware and software which was fading into obscurity.[1]

Emulated hardware

SIMH emulates hardware from the following companies.

Advanced Computer Design

  • PDQ-3

AT&T

BESM

Burroughs

Control Data Corporation

Data General

Digital Equipment Corporation

GRI Corporation

  • GRI-909

Hewlett-Packard

Honeywell

Hobbyist projects

IBM

Intel

  • Intel systems 8010 and 8020

Interdata

Lincoln Labs – MIT Research Lab

Manchester University

MITS

Royal-Mcbee

Sage Computer Technology

  • Sage II

Scientific Data Systems

SWTPC

  • SWTPC 6800

Xerox Data Systems

References

  1. "Preserving Computing's Past: Restoration and Simulation" Max Burnet and Bob Supnik, Digital Technical Journal, Volume 8, Number 3, 1996.
  2. http://www.schorn.ch/altair_5.php
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