System 2
The Acorn System 2 was offered as a system by Acorn Computers from 1980. It was the successor to the Acorn Microcomputer (renamed the Acorn System 1).
The system comprised four Eurocard-sized printed circuit boards mounted in a 19 inch subrack frame on an 8-slot backplane, plus a (separately supplied) additional external keyboard. The four PCB cards contained respectively
- a CPU card, containing a 1 MHz 6502 microprocessor, the keyboard interface, and a 2k ROM with the cassette operating system The 6502 card could be swapped for a 6809
- a VDU card, providing a 40×25 character teletext-standard display, based on an MC6845 CRT controller and an SAA5050 teletext character generator
- a cassette interface card
- a memory card with 4K of RAM and a 4K BASIC ROM. A further 4K of RAM could be added, and also an additional 4K ROM containing floating-point routines and scientific functions.
The system could be expanded with any of Acorn's standard Eurocards to add further functionality. In 1982 it was being offered for £320, or £480 with power supply, plus an additional £136 for the optional keyboard.
Read more about this topic: Acorn Eurocard Systems
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