is there a way to use gameshark type cheats on psx emulators?

I am playing rpg's i Have beaten several times before. reminisce the story so to say. don't want to spend so much time leveling up and want to use cheats to save time.any possible way?Also, RPG needs to be added to the spell check.

im using CEP, its useable with epsxe PSX emulators. not useable for version 1.7 thoughHeres a link.

i have used my code breaker PSX CD and it worked

afer a bit of searching. found this.list of cheats for codebreaker.
http://cheats.codetwink.com/psx/don't know if these are useful, just found them.and here.
http://www.ngemu.com/psx/epsxe.php?action=tools
they have PEC and AR GPUalso, i have irritation... with the emulators allowing my screensaver to activate, same with powersaver settings. but only when using my wireless controller. it seems the pc doesnt see that as input.Edit: i use epsxe 1.7 and psx 1.1.3EditEdit: problem with codebreaker and similar disks is that not ALL the games or codes are loaded into them.PEC doesn't have the codes for grandia "america release." will have to make them probably, trying CEP now.
same problem with CEP.can make codes on both? but cep yes isn't for 1.7 but is for psx1.1.3 or some other version.