Thanks for that link Christian. I've seen your list before but couldn't find it and the website I got this transcribed list from is long gone. I'll check your list against what I have and make sure the one I have posted is accurate and post a link to yours, if that's okay.
Santo On Sat, Jun 12, 2021 at 4:54 AM Christian Corti via cctalk < cctalk@classiccmp.org> wrote: > On Fri, 11 Jun 2021, Santo Nucifora wrote: > > I am currently working on an IBM 5100 that has some issues. I know for > > certain that the 5100 has a bad graphics controller card so I need to dig > > into component level replacements for those ICs I can replace. I have a > > list of logic chip equivalents to the IBM part numbers that are written > on > > the chips but I don't think it's 100% accurate because IBM part number > > 1582601 comes back as 74151 "DATA SEL/MUX" but when I use one of those > > cheap logic chip testers (that is surprisingly accurate), it comes back > as > > a 74157. For the record, if I test a 74151, it comes back as a 74151 so > the > > tester is correct. I just want to make sure the table I have is accurate > > and that the tester is not 100% accurate or if that chip has failed and > > tests like a 74157 in it's state. > > > > This is the current list I am using that I got from somewhere but I don't > > recall where: > > https://vintagecomputer.ca/ibm-vintage-logic-chip-equivalency-list/ > > Does anyone have an IBM logic chip equivalency table for 74 series logic > > chips? > > This list looks like a faulty transcription of my list here: > ftp://computermuseum.informatik.uni-stuttgart.de/ibm/ibmparts.txt > > In my list, it is "1582601 74157 DATA SEL/MUX". > This list came from some IBM internal copies with unknown source. > > Christian >