ICL PERQ 1 Workstation
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The PERQ, also referred to as the Three Rivers PERQ or ICL PERQ, was a pioneering workstation computer produced in the early 1980s.
The original PERQ (also known as the PERQ 1), launched in 1980, was housed in a pedestal-type cabinet with a brown fascia and an 8-inch floppy disk drive mounted horizontally at the top.
The PERQ 1 CPU had a WCS comprising 4k words of 48-bit microcode memory. The later PERQ 1A CPU extended the WCS to 16k words. The PERQ 1 could be configured with 256 kB, 1MB or 2 MB of 64-bit-wide RAM (accessed via a 16-bit bus), a 12 or 24 MB, 14-inch Shugart SA-4000-series HDD, and an 8-inch FDD drive. The internal layout of the PERQ 1 was dominated by the vertically mounted hard disk drive. It was largely this that determined the height and depth of the chassis.
A basic PERQ 1 system comprised a CPU board, a memory board (incorporating the framebuffer and monitor interface) and an I/O board (IOB, also called CIO). The IOB included a Zilog Z80 processor, an IEEE interface, an RS233 port, hard and floppy disk interfaces and Speech synthesis hardware. PERQ 1s also had a spare Optional I/O (OIO) board slot for additional interfaces such as ethernet
A graphics tablet was standard. Most PERQ 1s were supplied with an 8½ ×11-inch, 768×1024 pixel portrait oriented white phosphor monochrome monitor.
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This exhibit has a reference ID of CH63966. Please quote this reference ID in any communication with the Centre for Computing History.