Editing PERQ (section)

===PERQ 1===
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 [[Word (data type)|word]]s 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, 1 or 2 MB of 64-bit-wide [[Random-access memory|RAM]] (accessed via a 16-bit bus),<ref name="sus-leaflets-1985"/> a 12 or 24 MB, 14-inch [[Shugart Associates|Shugart]] SA-4000-series [[hard disk drive|hard disk]], and an 8-inch [[floppy disk]] drive.<ref>[http://www.chilton-computing.org.uk/acd/sus/perq_pr/p005.htm PERQ Brochure], Chilton Computing, UK.</ref><ref name="faq"/> 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 [[Input/output|I/O]] board (IOB, also called CIO).<ref>[http://yahozna.dyndns.org/computers/perq/index.html Three Rivers PERQ]</ref> The IOB included a [[Zilog Z80]] [[microprocessor]], an [[IEEE-488]] interface, an [[RS-232]] [[serial port]], hard and floppy disk interfaces and [[speech synthesis]] hardware.<ref>[http://www.chilton-computing.org.uk/acd/sus/perq_pr/p002.htm PERQ Display Boards], Chilton Computing, UK.</ref> 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, [[page orientation|portrait orientation]], white phosphor [[monochrome]] monitor.