I've tested these on Windows Xp 32 bit with service pack 3 on a weak Windows Xp machine
CPU: Celeron D 320
RAM: 512mb
GPU: ATI 9250 128mb 64bit (DX8.1 and OpenGL 1.4)
Motherboard: ASUS P4P800-X
1) FCEUX 2.6.6, Nestopia 1.40 for Nintendo 8bit
2) Snes9x v1.60 for Super Nintendo
3) Kega Fusion for Sega Mega Drive/Genesis and Sega Master System:
4) Retroarch for Gameboy, Gameboy advance, Super Nintendo, PC Engine and some other systems
5) Fbneo for arcade games (Super Street Fighter II turbo and Mortal Kombat games were tested)
6) Dosbox-x for MS-DOS games
these are pretty much the best emulators you can run on Windows Xp to play those old console games, specially Nestopia which is cycle accurate there is another cycle accurate nes emulator that works on Xp it's called Punes but I could not get it to run, VBA-m a Gameboy advance emulator also supports windows Xp it gave me the same error as Punes (a missing dll file) please add your working emulators to this list.
CPU: Celeron D 320
RAM: 512mb
GPU: ATI 9250 128mb 64bit (DX8.1 and OpenGL 1.4)
Motherboard: ASUS P4P800-X
1) FCEUX 2.6.6, Nestopia 1.40 for Nintendo 8bit
2) Snes9x v1.60 for Super Nintendo
3) Kega Fusion for Sega Mega Drive/Genesis and Sega Master System:
4) Retroarch for Gameboy, Gameboy advance, Super Nintendo, PC Engine and some other systems
5) Fbneo for arcade games (Super Street Fighter II turbo and Mortal Kombat games were tested)
6) Dosbox-x for MS-DOS games
these are pretty much the best emulators you can run on Windows Xp to play those old console games, specially Nestopia which is cycle accurate there is another cycle accurate nes emulator that works on Xp it's called Punes but I could not get it to run, VBA-m a Gameboy advance emulator also supports windows Xp it gave me the same error as Punes (a missing dll file) please add your working emulators to this list.