Emulator Cheats

[Pac-Man Arrangement]

Ghosts Always Award 7650 When Eaten
Ghosts Always Blue
Kinky Always Appears
Select Ghost Changeback Speed (Stay blue until eaten and No change to blue)

[Dig Dug Arrangement]

Always Have Speed Up
Select weapon (Pump, Ray Gun)
Special Flag Appears Now!
Ray Gun Hits Everyone

Forgot a few more cheats for Dig Dug Arrangement:

Infinite Ray Gun shots
Always award maximum points (765000) when foes are crushed by Rocks, Cosmo Balls and Containers.
Always award maximum points when foes are blasted by Ray Gun.

There's one more for Dig Dug Arrangement:

Barrier always active.