By newer ATI equivalents, I assume you mean ones downloaded from their website?
By the by, have you tried a Rev B ROM with that Trio? I too would love to be able to use that beast in my beiges.

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Yes. The seller of an 8500 included a CD with (then) newest stuff for 7nnn to 9nnn for me. 2007 was the most recent date, but the range was from 2001 up, and well after the release of OS 9.2.1, at least.

I'd trample on a little old lady to get my claws on a Rev. B to try. Short of doing the rounds of repairers' and upgraders' shops, I don't see any immediate likelihood of getting one, however. Rev. As probably get thrown away. Rev. Cs are scarce as ... Loose Rev. Bs are never heard of. You could try Applebits, if you haven't already.

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