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The card was designed to take sixteen 2708 or 2716 EPROMS, a first at the time (1977). Each ROM chip on the board could be individually addressed and up to 4 wait states could be added to the bus. Unused sockets did not block out the memory address space. Fully loaded the board drew about 320mA. There were voltage regulators for -5V and +12V for Intel 2716 EPEOMS. If 2708 EPROMS are used then only a single regulator (bottom left) is required.
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This page was last modified on 10/25/2013