I need to program some DM87S185N PROMS for some legacy equipment. I have plenty of PROMS , but the old legacy code & the PC it ran on has long been lost. Nothing that an AVR chip can't fix. However, the data sheet (4 pages) does not give much of a clue to the programming procedure and my old NS databooks have long ago vanished.
I can only assume that the Vcc =9.5V & EN=1, but something must be pulsed & I dont know which & for how long!
Does anyone have a NS PROM Application manual?