HAY GUYS

LiquidAcid · Local time: Mar 16, 2008, 06:41 PM

Is this "real" emulation or is the CPU inside the PSP compatible with the instruction set of the original PSX?

Jam it back in, in the dark.

LiquidAcid · 06:18 PM

I assume however that the GTE and SPU are in fact emulated, because I don't seem to find shrinked versions of that chips on the PSP.
@RYU: Any details on this matter? I see that both main CPU are MIPS-based, the PSX one is a R3000A and the on on the PSP seems to be 32R2.

Additional Spam:

Originally Posted by Soluzar

The CPU is from the same 'family' as that of the PS1, so that probably helps. I know the PS1 CPU was called an R3000 processor, and I think that the PSP CPU is called an R4000 as though it is just an upgraded version.

It's definitely not a R4000, which can be clocked at a maximum speed of 100MHz. AFAIK the PSP main CPU can be clocked at rates at bit above 300MHz, when using homebrew firmware.
Compatibility howerver should remain as the MIPS instr set didn't change so much over time (same as the x86 one).

There's nowhere I can't reach.

LiquidAcid · Local time: Mar 17, 2008, 11:30 AM

Indeed I was more interested about the details of the GTE emulation on the PSP hardware. At least there binary translation (dynarec) is needed, because you can't virtualize the existing hardware (or can you?).

This thing is sticky, and I don't like it. I don't appreciate it.