Magic Desk 4x8K 27(C)64 EPROM modification

by Clockmeister 2009

See images below for details. Sample experimental ROM binaries can be downloaded here and some useful software here .

 

Remove components and fit sockets as shown. Also cut/join traces as indicated.

 

 

 

The schematic diagram. Theory of operation is explained in this text file.

 

 

End result after modification. Note that fitting 16 pin sockets is optional and top half of cartridge case will not fit back on due to the EPROM height.

 

 

Modified Magic Desk 1 cartridge left, and Alphaworks 8/16KB cartridge development board on right.