My Dear friends, TODAY one more circuit, stand alone PROM, EPROM copier with blank check and compare facility. In this circuit I am using a 12 bit address generator IC 4040 with 74245 8 bit transceiver IC but used as uni direction only. You can use any 8 bit unidirectional control latch like eg. 74373 etc. To compare the data i am using 74688. Now you can use your concepts for increasing the address bit, getting the output lateched etc.
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This circuit won't work for any PROMs. They require high voltage (around 17V) to be applied to the outputs being programmed; one at a time. They may also raise VCC to a voltage higher than 5V during programming.

Marginal for EPROMs. Doesn't conform to any programming algorithm I'm aware of, and the 12V VPP is questionable (TI/Atmel specifies 12.75-13.25V, AMD/STM 12.5-13V).