teaching programming to kids - Re: Looking for 8080/Z80 BASIC

I remmeebr a conversation I had some yeas ago THegroup was deisnging a device which involved some high-speed analiguye and ECL circuity and thus had ot go on a 16 layer, arefull-made (read : mega-expensive) PCB. There was one bit of the desing that handn't been completed, It came down to producing a logic signal from 3 other logic signals (I think all F TTL). Thing is, they wanteto get the PCB off to the manufcaturer ASAP, without finising that part of the desigbn. I glanced at the problem and said 'That's trivial. I can do it in one IC'. One of the others's replied 'A PROM? A PAL? are they fast enough? Do we have the programmer for them'. 'No', I said, 'Just a plain TTL chip with no programming needed'. OK, what was the chip I suggested? (if did get used, BTW, and worked prefectly).