30 Mar
2004
30 Mar
'04
5 a.m.
>>>> "Joe" == Joe R
<rigdonj(a)cfl.rr.com> writes:
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