> > I wonder, did Tekken2 work correctly on the PS2 in PS1 emulation mode ? The
> > CPU is the same, but I thought the COP2 engine was emulated, so I wonder if
> > had to hack Tekken2 .. :)
> I don't have Tekken2 to check, but the R3k isn't exactly the same - in PS2 mode
> at least it has full 4k data and instruction caches just like "real" MIPS chips
Thats PS2 "turbo" mode. I bet they disable the data cache in PS1 mode, or many many games will crash that dont expect the wonders of data cache. And "some programmers" dont even expect having to flush the instruction cache, when loading in a new segment .. do they ? (wink wink ;)
Maybe I'll try to find some tekken2 and run it on a PS2 myself one day.