Ferguson Big Board
The Big Board (1980) and Big Board II (1982) were Z80 based single-board computers designed by Jim Ferguson. They provided a complete CP/M compatible computer system on a single printed circuit board, including CPU, memory, disk drive interface, keyboard and video monitor interface. The printed circuit board was sized so as to allow attachment to an 8 inch floppy disk drive. The Big Board II added a hard disk drive interface, enhancements to system speed (4 MHz vs. 2.5 MHz) and enhancements to the terminal interface.
One version of the Big Board was used in the Xerox 820.
Read more about Ferguson Big Board: Hardware, Software, Documentation, Specifications, Big Board Community, Third Party Products
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