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EASI Bus Test Card

The board is marked EASI BUS TEST 0197,204 Iss. B and has serial number 9520/004. The Acorn Expansion bus enabled expansion cards (a.k.a. podules) to be attached to Acorn computers from the Archimedes to the A7000. The Acorn Extended Address Space Interface (EASI) is part of the DMA Extended Bus Interface (DEBI) in a Risc PC. This defined the interface for expansion cards to communicate with the computer (see Acorn Enhanced Expansion Card Specification for the details).

Date : Unknown

Manufacturer : Acorn Computers

This exhibit has a reference ID of CH33736. Please quote this reference ID in any communication with the Centre for Computing History.

Scan of Document: EASI Bus Test Card

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