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Further reading □ OverviewDemo RoomDisplay boards: HardwareDisplay boards: NetworkingDisplay boards: Interactive ComputingRAL PERQ BrochureVideos 1981Visitors BookMoUSERC/ICL LaunchWilmot Sept 1981Press Sept 1981ICL PERQ BrochureICL PERQ BrochurePresentationsSERC Bulletin 1982SERC Bulletin 1983PERQ Brochure 1885PERQ Leaflets 1985ICL Seminars 1985Seed & Berry, 1991
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ACDSingle User SystemsPERQ Publicity
ACDSingle User SystemsPERQ Publicity
ACL ACD C&A INF CCD CISD Archives
Further reading

OverviewDemo RoomDisplay boards: HardwareDisplay boards: NetworkingDisplay boards: Interactive ComputingRAL PERQ BrochureVideos 1981Visitors BookMoUSERC/ICL LaunchWilmot Sept 1981Press Sept 1981ICL PERQ BrochureICL PERQ BrochurePresentationsSERC Bulletin 1982SERC Bulletin 1983PERQ Brochure 1885PERQ Leaflets 1985ICL Seminars 1985Seed & Berry, 1991

PERQ Display Boards

PERQ Hardware

This board gives a good schematic of the PERQ hardware and the main points:

The Winchester drive is mounted vertically and takes up the whole of the cabinet. The 4K WCS (Writable Control Store) was a major problem early on being only sufficient for handling the PASCAL P-codes so any other extensions or change of operating system needed a larger control store. The 256 Kbyte memory soon got increased to 512 Kbytes and eventually 1 Mbyte.

PERQ Hardware, March 1981

PERQ Hardware, March 1981
Full image ⇗
© UKRI Science and Technology Facilities Council

PERQ Architecture, March 1981

PERQ Architecture, March 1981
Full image ⇗
© UKRI Science and Technology Facilities Council
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