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<p>Ah good catch, the CY7C601is indeed FPU-less, I double checked
the pinouts (601, MB86903, W8701) and they are all the same, the
FPU pins are labeled as No-Connect or Reserved on the integrated
FPU parts.</p>
<p>The CY7C601 should work in the IPX but FP will be done in
software. Better than no IU at all, at least it would be a rather
unique IPX!</p>
<p>I don't have a SS2, but multiple SS2 compatibles (FORCE-2CE),
which all use integrated FPUs like the IPX, I didn't realise the
SS2 was different in that regard.<br>
</p>
<div class="moz-cite-prefix">On 5/1/25 09:37, Scott Quinn via rescue
wrote:<br>
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<div dir="ltr"> Are you certain the pinout etc is the
same? I'd definitely not risk <br>
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<div dir="ltr">it without hard info like datasheets or a
schematic.<br>
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<div dir="ltr"> I think if one could drop a 16-context
SS2 IU into an IPX, a lot of <br>
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<div dir="ltr">us would've done it back in the day, but
it's not something I've ever <br>
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<div dir="ltr">heard of.<br>
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<div dir="ltr"> -Dave<br>
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<div
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dir="ltr" data-setdir="false">I'll look up datasheets, but
I can tell you one good reason why you would want to be
careful about a SS2 SPARC in an IPX - the CY7C601 doesn't
have an onboard FPU and the IPX doesn't have a FPU socket,
so you won't have floating point.</div>
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<pre wrap="" class="moz-quote-pre">_______________________________________________
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