• Windows + Xbox 360 Controller for Windows
• Emulators:
  • NES - Nestopia
  • SNES - ZSNES
  • N64 - Project64
• Helper software
  • AutoHotKey, because it's always wonderful, but generally to work around most emulators' limitations

Conventions

• left bumper = save checkpoint, right bumper = load checkpoint

Tips

• it's usually easier to get an emulator that directly supports a joystick, and then tweak the keymapping as needed later in AutoHotKey.... autohotkey's joystick mapping is not super-super easy to configure (see "Method #3" on this page... that code is needed for most game-control keys, and is sort of lengthy)