I use the swap trick to play roms that I downloaded on my original grey ps1 but I noticed certain roms don't work no matter how many different versions from different sites I download so I thought I might as well put a list of the ones that haven't worked for me. Feel free to add on.
Roms that have worked:
- Silent Hill
- final fantasy 7
- diablo
- einhander
- parappa
- metal gear solid
Roms that haven't worked:
- Castlevania Symphony of the Night
- Resident Evil 3: Nemesis
- Harvest Moon: Back to Nature (Maybe it was just me but the save doesn't work, the actual game is fine though)
So Most games worked but Castlevania and RE3 didn't work...which sucks cause I wanted to try those..Harvest Moon seemed pretty boring anyway so idc.
This is All for NTSC Playstation not PAL or emulator.