IBM cross reference

[shakalnokturn]

I have been sorting through some of my scavenged components and came across the following AMD PLCC's:

42G2896 (20pin)
62H7775 (20pin)
87F5179 (28pin)

I'm quite sure I pulled them from large IBM Power server, the references do look like a typical IBM part numbering, despite they are made by AMD.
IIRC some of the server PCB's had these, others had 16V8 and 22V10 with the same stickers on top in the same places, so I'm expecting they have the same function...
I do not have a PLCC adapter to try them as such in my universal programmer, is there any known place on the WWW with cross references to IBM part numbers?

A quick V/I test with my oscilloscope's component tester seems to show that 42G2896 would be similar to the 16R4 or 16R8, the 62H7775 similar to 16V8.


I'd like to know if they are fused devices or re-programmable ones.

[VK3DRB]

Re-programmable. IBM rarely used OTP devices in their machines; especially not in their high end server boards. They only used them in low end stable machines like the Kanji display terminals.
As for a cross reference, sorry, but it has long been erased from my memory.

[shakalnokturn]

Re-programmable. IBM rarely used OTP devices in their machines; especially not in their high end server boards. They only used them in low end stable machines like the Kanji display terminals.
As for a cross reference, sorry, but it has long been erased from my memory.

Thanks for your input, I'll hold on to them until I get hold of PLCC to DIP adapters. Then I'll try to treat them as what I guess they are and maybe report back here.

As you seem to have worked for IBM, do you know if their numbering scheme follows any useful logic?