Re: FPU emulation incorrect for 68LC040?

Mattias Engdegård
2010-07-23T09:11:27Z

23 jul 2010 kl. 06.12 skrev Finn Thain:

> I ran this on a PowerBook 190cs:
>
> postinc: result -3.500000 (expected -3.500000), address 0xef8ddcf8
> (expected 0xef8ddcf8)
> predec: result 1.750000 (expected 1.750000), address 0xef8ddcf0
> (expected 0xef8ddcf0)

Thank you! It indicates that the address generation does not alter any
registers (because the FPU emulation will do so, and we didn't see a
duplicated change). This is a bit surprising to me, but your evidence
cannot be refuted. Anyway, it's good to have cast light on the matter.

(And Geert can say "told you so".)