SIMH

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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.

Contents 1 History 1.1 The Origin of SIMH 1.2 SIMH on the PC 2 Emulated Hardware 2.1 Data General 2.2 Digital Equipment Corporation 2.3 GRI Corporation 2.4 IBM 2.5 Interdata 2.6 Hewlett-Packard 2.7 Honeywell 2.8 MITS 2.9 Royal-Mcbee 2.10 Scientific Data Systems 3 References 4 External links

[edit] History

[edit] 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]

[edit] SIMH on the PC

SIMH was started in 1993 with the purpose of preserving minicomputer hardware and software which was fading into obscurity. [2]

[edit] Emulated Hardware

SIMH emulates the following hardware from the following companies.

[edit] Data General

• Nova
• Eclipse

[edit] Digital Equipment Corporation

• PDP-1
• PDP-4
• PDP-7
• PDP-8
• PDP-9
• PDP-10
• PDP-11
• PDP-15
• VAX

[edit] GRI Corporation

• GRI-909

[edit] IBM

• 1401
• 1620
• 1130
• 7090/7094
• System/3

[edit] Interdata

• 16-bit series
• 32-bit series

[edit] Hewlett-Packard

• 2116
• 2100
• 21MX

[edit] Honeywell

• H316
• H516

[edit] MITS

• Altair 8800 both Intel 8080 and Zilog Z80 versions

[edit] Royal-Mcbee

• LGP-30
• LGP-21

[edit] Scientific Data Systems

• SDS 940

[edit] References

"Preserving Computing's Past: Restoration and Simulation" Max Burnet and Bob Supnik, Digital Technical Journal, Volume 8, Number 3, 1996.

[edit] External links

• SIMH web page
• Running VAX/VMS Under Linux Using SIMH
• OpenBSD/vax on SIMH
• Debian Package
• An operating system lecture based on SIMH