Acorn Eurocard Systems - Eurocards

Eurocards

Placing the two Eurocards from the original Acorn Microcomputer onto a backplane made the system straightforward to expand in a modular way. The original I/O card, minus its keypad and LCD display, became the cassette interface card; while the original 6502 CPU card, slightly adapted with the addition of a keyboard interface, became the basic CPU card of the system.

A series of interchangeable expansion cards were then developed: additional RAM cards; a card containing a BASIC interpreter on ROM; a 40×25 character VDU card, and a UHF adaptor for it; interface cards; a floppy disk controller; Econet network cards; an 80×25 character VDU card; and later also alternate processor cards, offering a 6809 or a faster 6502.