Hi, i have to program some PROMs for a HAM-Radio equipment. I have M3-7685-5 PROMs (2048x4) from Harris which are pin- and read compatible (but not write compatible) with 82S185 and others.
But, because i have no PROM-Programmer, i will build one by myself. So i am looking for a Datasheet or/and a specification of the programming algorithm for the Harris 7685 PROM.
Is anyone out there who has an old Databook from Harris ? Many Thanks. Michi