PSX2PSP v1.4.2: How to Convert PSX games to PSP - CDRomance
I found out a while ago that you can actually play PS1 Games on your PSP : r/gaming
Price range for PS1 games on PSP announced – Destructoid
How to play PS1 games on your Sony PSP | TechRadar
Help me build a better Playstation Classic (Via a TV-Connected PSP go) | ResetEra
List: All PS1, PS2, and PSP classics on PS Plus Premium
Managed to get PS1 games running on my PSP, but music doesn't work. The PS1 games are a bunch of BIN files that I converted into a single BIN and then used
How To Convert Multi Disc PS1 ISOs To Play On PSP - YouTube
PSP Hacks: How To Install PS1 Games on PSP | Save Space and Customize - 2020 Edition - YouTube
PSP - POPSloader 6.60 PRO (PS1 on PSP) | PSX-Place