> Hi, I'm porting mame on 360(powerpc) using a free library (libxenon) it doesn't use
> any microsoft code, it's based on gcc, and doesn't require XDK or microsoft tools.
>
> I'm having some speed issue on some drivers.
Yes, the 360's CPU and the PowerPC portion of Sony's Cell are *extremely* slow per-clock. IBM had to remove everything about the PowerPC that normally makes it fast in order to get the clock past 3 GHz (this is similar to Intel's Pentium 4 debacle, only much, much worse). Hence, for a primarily single-threaded app like MAME the 360/PS3 are only marginally faster than the 800 MHz Wii (which has all the go-fast features in place).
> mk2 and mk3 are running really slowly (4 fps) is it caused by dcs ?
If they're slow and mk1 isn't, then yes DCS is likely the problem.
> Also Sh2 and Mips cpu based games are slow (15 to 30 fps) do someone started to work
> on a uml backend for ppc ?
A PowerPC backend for the UML system isn't going to come from MAMEdev given the only PPC machine we currently support (the Power Macintosh G5) hasn't been manufactured since 2006, and its rumored that the next-gen consoles will use other architectures as well.
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