All PS1 and PSP trophies available on PS Plus Premium so far
PlayStation 1 Intro gameboot for PSP | Kippykip Forums!
Sony's PSX emulator for PSP hacked to run any old PSX ISO
Are the PS1 games on PSP emulation or is there some sort of hardware backwards compatibility ? I wanted to put all my PS1 games on it but idk if there can
PSP Hack for Playing PS1 Games
Rumour: PS Plus Premium's PS1, PS2, PSP Games Have Started to Leak | Push Square
Transfer Saves from PSP to PS1 | GBAtemp.net - The Independent Video Game Community
PlayStation Plus: Every PS1 And PSP Game Confirmed
PSX2PSP v1.4.2: How to Convert PSX games to PSP - CDRomance
New PS1/PSP Classic Features For PlayStation Plus Have Been Revealed Alongside A Couple More Games
How To Play PS1 Games On Your Modded PSP! 🎮 (Convert PS1 ISO TO PBP) #PSPModding #PSP #PS1 - YouTube