Raven-20 RAM expansion

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The Raven-20 is a 20K RAM expansion for the BBC Model 'B' Micro fitted with OS 1.2

It provides the user with an extra 20K of usable RAM in screen modes 0 to 3. In other modes the amount of extra memory available will vary. In simple terms HIMEM is set to &7FFF when Raven-20 is enabled. This together with the aid of software makes the system completely transparent to both the user and the computer.

Date : 1984

Manufacturer : Raven Micro Products

Physical Description : RAM expansion board Raven EPROM Operating Instructions Polystyrene box and lid Cardboard box

This exhibit has a reference ID of CH34875. Please quote this reference ID in any communication with the Centre for Computing History.