If you would like an emulator for Super Nintendo, this one will please you certainly!
ZSNES is an open source emulator of super Nintendo. It has been written with x86 and C and C ++. For those who still use old machines, ZSNES supports SRAM, LoROM and HiROM, SlowROM and FastROM, FullDMA.
As far as it requirements are concerned, it only requires Pentium II or the equivalent of 233Mhz with 32 Mb memory at least.