Re: [Qemu-devel] M68K Or PPC Status Update to Run Mac OS in Qemu

[Alexander Graf]

G 3 wrote:
>
> On Dec 21, 2009, at 2:13 AM, address@hidden
> <mailto:address@hidden> wrote:
>
>> On 20.12.2009, at 21:32, Leo B wrote:
>>
>>
>>> A while back I know someone was working on PPC Support in Qemu to be
>>> able to run Mac OS9-Mac OS X in Qemu on X86 PC's not sure about M68K
>>> support though so is anybody still working on M68K support or PPC
>>> Support and how far is it from being included in a stable Qemu
>>> release,I notice Power PC Support still says Testing on the status
>>> page how far is it from being complete?
>>>
>>
>> M68k with non-colfire targets is pretty much non-existing. At least
>> when it comes to system emulation (which is the one you're interested
>> in).
>>
>>
>> As for PPC, the CPU and device emulation code should work fine for
>> OSX up to 10.2 or 10.3. Then Apple dropped support for the G3 Beige.
>>
>>
>> The major bit missing to get those to work is OpenBIOS. It's missing
>> some Forth extension that the OSX bootloader uses, so it fails to
>> load the kernel and boot.
>>
>>
>> Alex
>>
>
> What exactly is missing in OpenBIOS. I am currently studying the IEEE
> 1275 document (OpenBIOS specifications). I would like to add this
> system if I can. 


OpenBIOS is missing an implementation for local variables. See this
thread:
http://www.openfirmware.info/pipermail/openbios/2009-July/003796.html

Alex