DaedalusX64 is an N64 emulator for the PSP but many people use it on their PSVita/PSTV because there’s no native alternative. ‘TheMrIron2’ and ‘z2442’ seem to be working on improving this mad hack-up of an emulator. Recently, version 1.1.2 and 1.1.3 have been released and these brought along:
Minor changes to the code and makefile along with compilation via the latest PSP SDK – version 1.1.2
Code optimisation which brought about faster math processing and improvements in the emulation of the Media Engine; both of these combined provide better performance which may make some N64 titles more enjoyable – v1.1.3Updates to Daedalus are becoming somewhat substantial which could result in noticeable improvements!
TheMrIron2 also mentioned that he intends to rewrite the Media Engine’s job manager which would speed up sound processing and bring massive speed-ups to games like F-Zero X. He’s already done some commits from when v1.1.3 was released so that may mean that a new release may be up soon!
Version 1.1.3 is only provided in EBOOT.PBP format so you must have version 1.1.2 or another version of DaedalusX64 installed to use it.