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The board had a capacity or 32K. Note the NINE voltage regulators -- probably a record for a S-100 board. It had bank switching capability and recognized the Phantom line. The board utilized TMS 4044 (MM5257) 4KX1 RAM chips. Rows of chips could be selected in 8K increments by jumpers in the top middle of the board. A nice memory test program was supplied in the manual as well as a schematic.
Other Tarbell Electronics S-100 Boards
This page was last modified on 06/06/2015