23 Jun
1997
23 Jun
'97
2:13 p.m.
Ah - if you think of 74LS68x and 14L4's as
"current" with the introduction
of the Apple II, then that helps (to some extent) explain why you
don't like Wozniak's designs. Neither of these devices were even
gleams in anybody's eyes in 1977! The closest you'll come to programmable
logic in 1977 are bipolar PROM's. (Which Woz was no stranger to -
just take a look at the Disk ][ controller!)
Signetic (I think it was them) had some PAL like devices back in the
mid-1970s. I do not think they were as flexible as PALs, but they did
combine the best of the PROM and glue worlds for decoding schemes.
William Donzelli
william(a)ans.net