Re: [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC

[Pierre d'Herbemont]

Which PowerPC Implementations? According to The PowerPC Architecture 
Book, all the implementation 601,603,604,620 should include support for 
the lwbrx and stwbrx instructions.

Pierre.

Le 9 juil. 04, à 22:07, Natalia Portillo a écrit :

> I think that including support for the PowerPC swapping instructions 
> in QEMU
> will break compatibility with host PowerPCs before G3, so that 
> instructions
> should be used in a run-time capability detection scheme.
>
> > -----Mensaje original-----
> > De: address@hidden
> > [mailto:address@hidden
> > En nombre de Pierre d'Herbemont
> > Enviado el: viernes, 09 de julio de 2004 20:38
> > Para: address@hidden
> > Asunto: Re: [Qemu-devel] Inquiry, speed comparison on OS X,
> > QEMU vs Virtual PC
> >
> > I probably should add that the Mac OS X version that is
> > avalaible for download doesn't include support for the
> > PowerPC swapping instructions (little-endian storing and
> > loading instructions). Next release will.
> >
> > Pierre
> >
> > Le 6 juil. 04, à 02:29, address@hidden a écrit :
> >
> > > It was precisely because it has not yet been optimized that I was
> > > curious of first impressions.  The fact that it has been
> > described as
> > > "somewhat" slower is encouraging.  No one expects it to be
> > faster than
> > > VPC out the gate, but to be in the same ballpark is quite an
> > > achievement.
> > >
> > > -Daniel
> > >
> > >
> > > On Jul 5, 2004, at 5:23 PM, Leigh Dyer wrote:
> > >
> > > > On Mon, 2004-07-05 at 15:24 -0700, Daniel J.Guinan wrote:
> > > > > I'm curious, how does the speed compare to Virtual PC?
> > > >
> > > > Not terribly well yet - on my 1Ghz Tibook, it feels about the same
> > > > speed as on my 800Mhz PIII desktop PC at work, which is to
> > say that
> > > > the emulated system seems somewhere around
> > > > high-end-468/low-end-Pentium speed. However, it's important to
> > > > remember that Virtual PC:
> > > >
> > > > * has been around for ages, and has seen lots of development and
> > > > optimisation
> > > > * uses a hand-written and heavily optimised x86->PPC translator
> > > > * uses special PPC features like Altivec and little-endian mode to
> > > > speed things up
> > > > * uses the host system's MMU to accelerate memory access
> > > >
> > > > Qemu's still fast enough to be usable for a great many
> > things though,
> > > > so if you're debating whether or not to try it, by all
> > means download
> > > > it and give it a go.
> > > >
> > > > Thanks
> > > > Leigh
> > > >
> > > >
> > > >
> > > > _______________________________________________
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> > > > address@hidden
> > > > http://lists.nongnu.org/mailman/listinfo/qemu-devel
> > >
> > >
> > >
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> >
> >
> >
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