Just tap the Playstation button while you're in the PSOne game, it will bring up a menu and that should be one of the options.
I'd never heard of/didn't know about this, either.
Then again, I can only remember playing a couple of PS1 games on my PS3 (CT WAS one of them, though)!
*SOURCE* on/for this?
(Not that I don't believe everything that I read on Internet message boards, or anything:)
Source: Me. Because I've done it.
Folks,
I have to apologize. I just sat down to check and it seems I got my new old school mixed up.
The ps2 lets you set it system wide (although my Alzheimer's has me swearing I set it when I first got my ps3 as well.). I also swear I've toggled it on/off per game on my PS3 (that one must be the Aspertame in my Coke Zero).
Anyway, I am uploading a video to youtube showing how to set it system wide on the PS2. I've read a few places that say PS2 with fast disk read is actually faster than PS3 normal.
I'll have to give that a shot. If it's true I guess my quest for a fully backward compatible PS3 fat will come to an end and my PS 2 will continue to have purpose.
I'm pretty embarrassed by my brain misfiring on this one.