I vaguely remember that all 2532 and 2732 EPROMs were compatible *except* t=
he TI one.
(or was it an other manufacturer?)
From that one manufacturer the 2532 used a
*second* power supply ... was it=
-5V?
You're thinking of the 2K byte (16K bit) EPROMs. Everybody but TI made a
2716 that was single-rail (+5V supply only). TI's 2716 was a 3-rail part
(+5V, +12V, -5V), the TI 2516 was single-rail part and much the same as
everyone else's 2716.
-tony