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The SD SALES EXPANDOROM was a high
performance PROM board using the industry standard 2708 (1Kx8) EPROM or 2716
(2KX8) EPROMS. Other notable features of the board included:-
1) Switch addressing on 16K or 32K boundaries
2) Each EPROM is DIP switch selectable on/off.
3) DIP switch selectable wait states (0, 1 or 2).
The manual can be seen by clicking on the pdf
SD Systems ExpandoROM Manual
This page was last modified on 10/25/2013