PPC Emulator, is this real?!?!

[Fredrik Andersson]

Yes this is an issue, however the problem can be minimized using=20
various techniques (I'm no pro at the x86 myself) forexample trying to=20=

keep the register "holders" inside the CPU cache, the x86 can operate=20
on memory directly (unlike the PPC who needs to operate on the data in=20=

a register). However this problem is still minor compared to the MMU=20
problem.
If there was a simple solution to this the market would be flooded with=20=

PPC emulators that was "chrp" compatible, but there's an obvious lack=20
of things like that.

/Fredrik

.
tisdagen den 14 oktober 2003 kl 13.19 skrev Randy Hall:

> My understanding with cpu emulation of any kind is that to get decent
> performance you need to map all the registers of the emulated CPU into=20=

> the
> host CPU.  The PPC has more registers than the x86 can handle.  This=20=

> is why
> the PPC can emulate a x86 but not the other way around.
>
> -----Original Message-----
> From: mol-general-admin@lists.maconlinux.org
> [mailto:mol-general-admin@lists.maconlinux.org]On Behalf Of Fredrik
> Andersson
> Sent: Monday, October 13, 2003 5:05 PM
> To: mol-general@lists.maconlinux.org
> Subject: Re: PPC Emulator, is this real?!?!
>
>
> This emulator don't even emulate an MMU (I didn't find any indications
> on that anyway.),
> also. I wouldn't expect this to even be playable, demos might run
> quick. just like there's playstation 2 emulators who can run some =
demos
> with a decent framerate, but real games are way more complex. besides
> the Gekko has special vector and graphics extensions which will be =
very
> heavy to emulate.
>
> /Fredrik.
>
> m=E5ndagen den 13 oktober 2003 kl 22.58 skrev Karosa Alabaster:
>
>> Well this emulator engine is being developed to run 3d games..
>> So the MMU code should deal with speed issues.. At least I think so..
>> Let me
>> know if anyone wants to run some speed test..
>>
>> Thanks in advance
>> --
>> Karosa Alabaster
>> ----- Original Message -----
>> From: "Fredrik Andersson" <fredrikandersson@mac.com>
>> To: <mol-general@lists.maconlinux.org>
>> Sent: Monday, October 13, 2003 10:24 PM
>> Subject: Re: PPC Emulator, is this real?!?!
>>
>>
>> It appears to be real to me. (I don't have a x86 around here though =
to
>> verify. but the interpreter seems functional (and it's actually a PPC
>> interpreter))
>> Either way. The problem is not to write a PPC emulator, there's quite=20=

>> a
>> few already.
>> The problem is to get speed in the thing, especially the Memory
>> Management Unit.
>>
>> /Fredrik
>>
>> m=E5ndagen den 13 oktober 2003 kl 21.46 skrev Karosa Alabaster:
>>
>>> Hey Samuel, and other C programmers.
>>>
>>> http://www.zophar.net/gc.html
>>>
>>> Could you check this out? It could be interesting.
>>> It claims to be a GameCube emulator for the x86 platform (That thing
>>> contains an Ibm PowerPc G3 cpu) Plus it claims not to be a hoax.
>>> Altough I don't really program in C, It doesn't seem like a big=20
>>> window
>>> with
>>> message box saying "Hey.. You were hoping for a ppc emulator, good
>>> joke"
>>> Tell me what you think.. Can this actually be used to emulate a ppc=20=

>>> on
>>> the
>>> pc?
>>>
>>> Thanks in advance.
>>> --
>>> Karosa Alabaster
>>>
>>> _______________________________________________
>>> mol-general mailing list
>>> mol-general@lists.maconlinux.org
>>> http://lists.maconlinux.org/mailman/listinfo/mol-general
>>
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