This work involved him finding and fixing a bug in gPSP’s dynarec which caused it to not work properly and cause stuttering on the PlayStation Vita thus giving good-but-not-perfect GBA emulation. Now, full-speed GameBoy Advance emulation will soon become a reality thanks to Frangar’s work on RetroArch’s gPSP core.
However, achieving full-speed emulation in some games has been challenging up till now, especially with RetroArch’s gPSP core, even though LOLIcon ( a plugin letting you overclock your PSVita to 494MHz) alleviates the issue somewhat. Considering how old the GameBoy Advance is, it’s no secret that the PlayStation Vita has enough power to emulate it at full-speed because after all, even the PSP can do a good job at emulating it.