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
Famous quotes containing the word system:
“The system was breaking down. The one who had wandered alone past so many happenings and events began to feel, backing up along the primal vein that led to his center, the beginning of hiccup that would, if left to gather, explode the center to the extremities of life, the suburbs through which one makes one’s way to where the country is.”
—John Ashbery (b. 1927)