SIMH A highly portable, multi-system simulator.
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IBM simulator multi-system multi-system simulator IBM emulator Hewlett-Packard 21MX

SIMH Description

A highly portable, multi-system simulator. SIMH is a highly portable, multi-system simulator. It consists of simulators for approximately 20 different computers, all written around a common user interface package and set of supporting libraries.SIMH can be used to simulate any computer system for which sufficient detail is available, but the focus to date has been on simulating computer systems of historic interest.SIMH implements simulators for:- Data General Nova, Eclipse - Digital Equipment Corporation PDP-1, PDP-4, PDP-7, PDP-8, PDP-9, PDP-10, PDP-11, PDP-15, VAX - GRI Corporation GRI-909 - IBM 1401, 1620, 1130, 7090/7094, System 3 - Interdata (Perkin-Elmer) 16b and 32b systems - Hewlett-Packard 2114, 2115, 2116, 2100, 21MX - Honeywell H316/H516 - MITS Altair 8800, with both 8080 and Z80 - Royal-Mcbee LGP-30, LGP-21 - Scientific Data Systems SDS 940 What's New in This Release: · SCP and libraries: Fixed bug in DETACH ALL if called at simulator exit (from Dave Bryan) Fixed bug in DO command handling of null arguments (from Dave Bryan) Fixed bug in DO handling of \ (literal backslash) (from Dave Bryan) Fixed warnings in help printouts HP2100 (all changes from Dave Bryan) Corrected DMS violation register set conditions JSB to 0/1 with W5 out and fence = 0 erroneously causes MP abort Fixed DJP, SJP, and UJP jump target validation BACI: Fixed STC,C losing interrupt request on BREAK MPX: Implemented 12792C eight-channel terminal multiplexer MT: Fixed missing flag after CLR command PIF: Implemented 12620A/12936A Privileged Interrupt Fences IBM 1401: Fixed bug in ZA and ZS (from Bob Abeles) Fixed tape indicator implementation (from Bob Abeles) Added missing magtape modifier A (from Van Snyder) Added -n (no rewind) option to BOOT (from Van Snyder) Fixed bug to mask input to 6b on read (from Bob Abeles) PDP11: Moved all Unibus/Qbus support routines to common I/O library Fxed bug in ASHP left overflow calc Fixed bug in DIVx VAX: Fxed bug in ASHP left overflow calc Fixed bug in DIVx Resync time of day clock on any clock reset

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