The Sorcerer might have been the first computer to use plug-in ROM cartridges (which Exidy called ROM-PACs) as a software medium. Users had to supply their own video monitor and cassette recorder. Sorcerers are prized and uncommon collectibles today. Personal Systems Consulting made the Sorcerer-compatible PS-80.
Exidy Sorcerer (June 1978, desktop)
Original Retail Price: $895
Base Configuration: 2MHz Z80 CPU; CP/M; ROM cartridge slot 8K RAM (48K max), 12K ROM; integral keyboard; RS-232, parallel, and two cassette ports
Video: 30-line x 64-column text, 512 x 240 graphics
Important Options: S-100 bus expansion chassis