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.
Ah yes. The 82S100 and related devices. They were less flexible than later
PALs in that there were no flip-flops on the outputs and no internal
feedback terms, but were more flexible in that you could program both the
AND matrix (like a PAL) and the OR matrix (to decide how many (and which)
product terms to use for each output).
The gates in my computer are AND,OR and NOT, not Bill