Thanks @p for the Earthbound ROM!
I dusted off my old jail-broken PSP and installed this emulator
https://github.com/173210/snes9xTYL
I have other emulators on it too, but don't ask me how I jail broke it, it was like 6 years ago, most of my bookmarks are broken.
Well, maybe these will point you in the right direction:
https://emulation.fandom.com/wiki/Emulators_on_PSP
https://digiex.net/threads/psp-6-61-custom-firmware-install-on-any-psp-psp-psp-slim-psp-3000-psp-go-e1000.12915/
https://www.reddit.com/r/emulation/comments/1flio6/old_school_nintendos_on_psp/
https://wololo.net/talk/viewtopic.php?t=26981
http://www.mobile-dev.ch/old.php?page=pspsoft_masterboy
@coolboymew @olmitch @noyoushutthefuckupdad @rees @Hyperhidrosis
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