Joe> I found a board with several of these yesterday. Can anyone id Joe> them? I've searched the net and all I can find are sellers with Joe> no names or descriptions of what the ICs are. Chip directory Joe> comes up empty. They're 24 pin ICs with white ceramic bodies Joe> and gold lids and legs. They're marked "93448-DC" and "F 7633". "F" suggests Fairchild (I assume 7633 is a date code, late summer 1976!). So I asked Google for "Fairchild 93448. So much for the nasty comments about Google -- the very first hit has the answer: http://wulfman.com/pdffiles/rom95f-10.pdf, page 8. Looks like a 512 by 8 PROM (I believe that means one time programmable, fuse style). paul