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Further reading □ Overview □ Demo Room □ Display boards: Hardware □ Display boards: Networking □ Display boards: Interactive Computing □ RAL PERQ Brochure □ Videos 1981 □ Visitors Book □ MoU □ SERC/ICL Launch □ Wilmot Sept 1981 □ Press Sept 1981 □ ICL PERQ Brochure □ ICL PERQ Brochure □ Presentations □ SERC Bulletin 1982 □ SERC Bulletin 1983 □ PERQ Brochure 1885 □ PERQ Leaflets 1985 □ ICL Seminars 1985 □ Seed & Berry, 1991
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⟶ ACD ⟶ Single User Systems ⟶ PERQ Publicity
⟶ ACD ⟶ Single User Systems ⟶ PERQ Publicity
ACL ACD C&A INF CCD CISD Archives
Further reading ⇓

□ Overview □ Demo Room □ Display boards: Hardware □ Display boards: Networking □ Display boards: Interactive Computing □ RAL PERQ Brochure □ Videos 1981 □ Visitors Book □ MoU □ SERC/ICL Launch □ Wilmot Sept 1981 □ Press Sept 1981 □ ICL PERQ Brochure □ ICL PERQ Brochure □ Presentations □ SERC Bulletin 1982 □ SERC Bulletin 1983 □ PERQ Brochure 1885 □ PERQ Leaflets 1985 □ ICL Seminars 1985 □ Seed & 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
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© 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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