Dig Dug

Patched by TLR.
- clean crack from the original Atari Namco (rev2) cartridge.
- applied minor cosmetic changes from the Datasoft release.
- remapped to use joystick 2.
- remapped start page keys to A/B/C (both DTV buttons and keyboard keys)
- remapped game keys: R-button (or space) = pause, A = restart game.
- removed annoying raster glitch during start up.
- runs on a c64 too.
