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Unknown PowerPC Processor

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First post, by AmanitaJavanica

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Hello.

I have a CPU that I believe is a PowerPC 750FX, but I couldn't find the same one online.
It seems to be converted from BGA to ZIF. There are 288 pins.
The text on the board is as follows.

114z89 0286
PCB: PCM750 Rev B
ASY: PCM750-FX

Additionally, there is a DIP switch on the board.

Does anyone know anything about this CPU?

Reply 3 of 6, by AmanitaJavanica

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ratfink wrote on 2025-09-14, 08:48:

have you looked here, there seem to be similar boards being discussed (see bottom of first page of thread)

https://68kmla.org/bb/index.php?threads/ppc75 … ppc750gl.39043/

Indeed, the “damaged 800MHz board” on that page resembles mine.
I believe it's a product from the same manufacturer, but it's a shame the manufacturer's name isn't mentioned.

Reply 4 of 6, by AmanitaJavanica

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red-ray wrote on 2025-09-14, 09:45:

Looking at https://pearpc.sourceforge.net/pvr.html there are at least 5 different 750FX versions, what is the PVR of the one you have?

https://en.wikipedia.org/wiki/PowerPC_7xx has a section for the 750fx

How do I read the PVR?
I can't use any software because I don't have a working PowerMac...
If only there were a way to physically check the PVR.

Reply 6 of 6, by AmanitaJavanica

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I got it.
Once my dusty G3 DT is fixed, I'll give it a try.
Thank you.

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