On Tue, Mar 26, 2013 at 10:59 AM, Michał Pleban <email@example.com> wrote: > Hello! > > I was wondering, has anyone ever considered creating a PLA replacement > with two GAL22V10 devices? This should be a rather straightforward task, > and two such chips should easily provide enough input and output pins to > replace the PLA. I am actually surprised that so far efforts to replace > the PLA chip focused on EPROM or CPLD based solutions, but what about > PAL/GAL? This is actually what the PLA itself is, anyway? ;-) EPROM solutions are easy to implement - the PLA is essentially a "fast" (by 1982 standards) EPROM, not a PAL/GAL. I haven't memorized the access time of the 82S100, but an EPROM with an equivalent (or better) value will drop in there nicely. ISTR it takes a 27C512 or so, but someone who's done it can certainly quote exact values. -ethan Message was sent through the cbm-hackers mailing listReceived on 2013-03-26 16:01:01
Archive generated by hypermail 2.2.0.