funny, I was just typing a bipolar cross ref in and was going
to send it to vectorlist today
1024 *4 ts 18p 82s137 (sig) 6353 (mmi) 24s41 (ti) 7643 (harris)
27s33 (amd) 74s573 (nat) 93453 (fairchild)
mcm7643 (mot) 3625 (intel)
I'll check the surplus places today.. problem is finding unprogrammed
bipolar parts.