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Risc Developments ECO/IO board

The Risc Devlopments ECO/IO board is a mini podule which provides a BBC User port and Analogue port for A30x0 and A4000 computers. On this card there is a 3rd port in the middle, which is not fitted, I am not sure what it was intended to be or if there was an upgrade for it.

 

Date : Unknown

Manufacturer : Risc Developments

This exhibit has a reference ID of CH47719. Please quote this reference ID in any communication with the Centre for Computing History.
 

Scan of Document: Risc Developments ECO/IO board

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