No, but PS1 games work with PS2.
try it out
NO ps2 games don't work in Ps1 only Ps1 games works on Ps2
games for a PS1 will work on a PS2 but will not be any better quality, and games for a PS2 will not work on a PS1 Yes. They can. But the graphics may not be as good on a PS2 as a PS1.
No GTA San Andreas will not work in a PS1
no you have to have a modded ps1/2/3
yes it will but only to play ps1 games
no
no
no
yes i use ps1 cords
there wouldn't be PS1 codes on a ps2 gameshark but since ps1 games work on ps2 you might be able to download ps1 cheats onto ps2 gameshark but it is doughtful since ps1 and ps2 gamesharks and gameshark codes are probably differant format