>>5050672
Do your homework anon. The only aspect of the PS1 being run natively on a PSP is the CPU. The rest is all done in software, which is refereed to as "POPS" (PlayStation One Portable Station).
So, it's really partial emulation. Go boot up Silent Hill right now and you'll see a graphical issue within literally seconds of starting a new game. Notice what happens when Harry is running in slo-mo in the black s creen.