CPU of the Day: Unknown IBM MCM – Any ideas?
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Every now and then I will get a chip in that I cannot ID. This is a particularly perplexing one. It looks like it should be something fairly well known, but I cannot determine what. By the dates its a 2005 vintage IBM, MCM, on a fairly large ceramic package with 1077 lands. It contains a pair of Infineon HYB39S256160DT-7 256Mbit (4Mbitx16bit) DRAMs which are 7ns 143MHz max, commonly used on PC133 SDRAM. That works out to 64MB. Also on the package is a IBM0436A8ACLAB 8Mbit (256Kx36) 4.5ns (222MHz) 1Mbyte SRAM.
IBM MCM die
Markings on the die are:
0FE45000L3
AKESXEX0
1 10-10
09K2262
If you have any ideas what it is, or what it may be, post a comment. I may just give you one. These came in with a lot of HP PA-RISC processors, so perhaps related?
UPDATE (10/20/2016): Mystery solved. These are processors from a Cadence Palladium emulator system. Read more about them here
February 14th, 2013 at 11:07 pm
Pure guess….
One of their mainframe CPU’s from a departmental MF?
February 15th, 2013 at 3:25 am
I have no way to know, seems off since its such a substantial MCM
May 2nd, 2015 at 5:03 pm
HP PA-8900. The 64MB of regular SDRAM as external cache is the giveaway.
October 23rd, 2016 at 1:00 am
http://www.cpushack.com/2016/10/20/processors-to-emulate-processors-the-palladium-ii/