If they didn't work then Thomas would have told me. It would be a really big deal. That is my view.
Great.. a view.. I'm looking for evidence here. If they do work where are all of the posts showing them off? If you google this part number there are only about 3 results that aren't Chinese brokers and those results are all threads like this.. not a single result about one of these things working. Strange for something so amazing eh?
The way I remember it is that Thomas plugged one into his 060 card and it worked and it did not have MMU or FPU.
You could try datamining the Natami forum.
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There is no evidence there either... more he said she said. No one has posted "They work, they clock up to xyz, the mask revision according the the register in the chip is...". For something people are so sure about there is so little evidence it's laughable.
Supposedly some Atari guys are using them. You could search Atari forums if u want.
Of if they are really $20.00 why not just buy one and see what happens?
And we're back to "my mate Dave down the pub said they work, so they must work". There's nothing about these chips in the Atari forums either.
Having actually ordered parts like these from brokers I can tell you that the unit cost might be $20 but it will cost a lot more than that to actually have something in your hands.
You need to order 5 parts at least and tell the broker you want n hundred in the future to get those prices. You will then pay $30 or so to have them Fedex them... and then you'll pay a fee for daring to pay with something traceable like Paypal. So we're talking about at least $100 at the end of the day... then I would need to put together a little board to test them. I can get a 4 layer 10cmx10cm board made up for about $100 shipped.
So we're now talking $200 to test some chips that are "100% working according to Dave!!1!1!!!". Yeah, I think I'll pass on that. My barter still stands but the way you just side stepped it with more "someone down the road out of their head on smack said they worked" makes me think you don't have the confidence in these parts to put your money where your mouth is..