Computing for engineers

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The MicroVAX II,  was a mid-range MicroVAX introduced in May 1985. It ran VAX/VMS or, alternatively, ULTRIX, the DEC native Unix operating system.

It used the KA630-AA CPU module, a quad-height Q22-Bus module, which featured a MicroVAX 78032 microprocessor and a MicroVAX 78132 floating-point coprocessor operating at 5 MHz (200 ns cycle time). Two gate arrays on the module implemented the external interface for the microprocessor, Q22-bus interface and the scatter-gather map for DMA transfers over the Q22-Bus. The module also contained 1 MB of memory, an interval timer, two ROMs for the boot and diagnostic facility, a DZ console serial line unit and a time-of-year clock. A 50-pin connector for a ribbon cable near the top left corner of the module provided the means by which more memory was added to the system.

Our example features a TK50 cartridge tape drive and an RD54 Winchester hard drive - which unfortunately may be faulty. The machine is running VMS 5.4.

Manufacturer: Digital Equipment Corporation
Date: May 1985

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Computing for engineers Manuals:

Item Manufacturer Date
BASIC Pocket Reference Guide Digital Nov 1982
MicroVMS Programmer's Manual digital software 1 Apr 1986
Digital LN03R ScriptPrinter Programmer's Supplement Apr 1987
DIGITAL - Guidelines for VAXcluster System Configurations DIGITAL Apr 1989
Cray - DEC VAX / VMS Station 4.02 Documentation Update Cray Research Inc Dec 1989

Magazines RELATED to Computing for engineers in our Library

Item Manufacturer Date
University of Cambridge Computing Service October 1985 Newsletter 121 Oct 1985
DEC User October 1987 Oct 1987
ULCC News November 1988 Newsletter 226 Nov 1988
ULCC News February 1991 Newsletter 250 Feb 1991

Catalogues RELATED to Computing for engineers in our Library

Item Manufacturer Date
DECdirect Software Catalogue DECdirect Apr 1989

Other Systems Related To Computing for engineers:

Item Manufacturer Date
DEC Rainbow 100A Digital Equipment Corporation 1982
DEC Rainbow 100+ Digital Equipment Corporation 1982
DEC Rainbow 100B Digital Equipment Corporation 1982
DECmate II Digital Equipment Corporation 1982
DECMate III Digital Equipment Corporation 1984 to 1990
Digital Personal Workstation 433au Digital Equipment Corporation 1997

This exhibit has a reference ID of CH40924. Please quote this reference ID in any communication with the Centre for Computing History.


Computing for engineers

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