Re: [B2-devel] Use of ExpandMem lowmem?

[<gb...@di...>]

[Oops, that one didn't get onto the list]

Hi,

> Well, it seems to call HandleZone() with a handle it gets from the
> ExpandMem area but which is uninitialized.

Well, I could explore a little more in the train: actually, I disabled
FPUType that was forced to 1 in main.cpp when CPUType=4. Disabling FPU
emulation in 68040 mode (i.e. 68LC040) lead to no crash at all with APD.

The only parts that differ in the FPU core between 68040 and the rest
are FSAVE and FRESTORE instructions. Probably state frames are mis
popped/pushed to the stack.

Christian, in the series of system patches, does MacOS actually know
that in 68040 (UAE) mode it has to generate state frames of that type
when the FPU is enabled? Hadn't you a similar problem for 68040/68060
native mode on AmigaOS, NetBSD?

Bye,
Gwenole.