SIMH is a highly portable, multi-system emulator which runs on Windows, Linux, Mac OS X, FreeBSD, OpenBSD, NetBSD, OpenVMS, and other operating systems. It is maintained by Bob Supnik, a former DEC engineer & DEC vice president and has been in development in one form or another since the 1960s.
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History
The Origin of SIMH
SIMH was based on a much older systems emulator called MIMIC, which was written in the late 1960s at Applied Data Research. [1]
SIMH on the PC
SIMH was started in 1993 with the purpose of preserving minicomputer hardware and software which was fading into obscurity. [2]
Emulated Hardware
SIMH emulates the following hardware from the following companies.
Data General
Digital Equipment Corporation
GRI Corporation
- GRI-909
IBM
Interdata
- 16-bit series
- 32-bit series
Hewlett-Packard
- 2116
- 2100
- 21MX
Honeywell
- H316
- H516
MITS
- Altair 8800 both Intel 8080 and Zilog Z80 versions
Royal-Mcbee
- LGP-30
- LGP-21
Scientific Data Systems
References
"Preserving Computing's Past: Restoration and Simulation" Max Burnet and Bob Supnik, Digital Technical Journal, Volume 8, Number 3, 1996.
External links
- Official website
- Running VAX/VMS Under Linux Using SIMH
- OpenBSD/vax on SIMH
- Debian Package
- FreeBSD Port
- An operating system lecture based on SIMH
- UNIX: Old School. Using SIMH to explore UNIX history - Matthew Hoskins
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