I have a speech board that the owner claims is for Space Shuttle. None of the call outs that work match what the manual says. I cannot find a cross reference for the chip numbers that are installed. Also, the manual says U4 should be populated and it is not, unless I am reading the chip locations incorrectly. Is there someplace that shows the OEM numbers for Williams games?

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Thanks @maralb, I guess I am out of luck then, I don’t have any 2532 chips and I don’t plan on getting any.

Well, I did find some 2532s, but my programmer won’t do these, I have a TL866. So, still out of luck.

Thanks MarAlb but that is not necessary, it was just for a spare, I’m sure we can find one laying around somewhere here.

Do you have or know where a list of Williams ROM numbers and what games they are used in? I have found list for Bally and Stern but have not seen one for Williams games.

Thanks slochar , I’ll give that a try and see how it works, I’m sure someone out there has made a pcb for this already. I have already programmed some 2732s for it so I might as well try them.