I could begin development but dont know if worths the work.
Gosh, that would be... I could kiss if you somehow pulled it off. But, I understand that it will be a hell amount of work to get a PS1 Emulator working on a windows phone, and to make it even close to decent. Although, if you got it working at a smooth frame rate, I'd actually be willing to pay much more than the other emulators, and I'm saying maybe even twenty dollars or more.
Maybe its even impossible to do that though. Maybe you should do something like a GBA emulator, but for lower phones than 920? I don't know, I'm just throwing around ideas. The N64 emulator idea sounds great, I'd pay for that, hopefully you can get whatever you make with smooth gameplay. Good luck!:winktongue: