[OpenBIOS] Running client with MMU off

[BALATON Zoltan]

On Sat, 7 Jun 2014, BALATON Zoltan wrote:
> I'm not sure how it should work but on real hardware the mapped area seems to 
> be 0x0000-0x3000 while with OpenBIOS it's only 0x1000-0x3000. Could we just 
> modify it to be 0x2000-0x3000 to avoid the exception? Or can we match what's 
> on real hardware?

Alternatively maybe the translation could be locked in using dbat 
registers as maybe the DSI happens because the entry is not in the TLB any 
more by the time it is accessed. Please decide on one solution and let me 
know which one you prefer.

I'd really like to get this in before the freeze because it is probably 
the biggest obstacle now preventing more people to try running MorphOS on 
QEMU. (The other one is in QEMU but that's less prohibiting because unlike 
building OpenBIOS that does not need a cross-compiler environment.)

Regards,
BALATON Zoltan