DacMan is very similar to Pac-Man. Move about the maze, eating all the dots and avoiding the three ghosts. If you eat a power pellet, the ghosts turn blue then you can eat them for points. If you need more information that this, then, well... nevermind (sigh)
At the DACMAN title and the Informations screens :
HOLD # & PRESS FIRE BUTTON : CHEAT CODE #1 - "Start at level 6"
HOLD 0 & PRESS FIRE BUTTON : CHEAT CODE #2 - "Start with 10 lifes"
HOLD * & PRESS FIRE BUTTON : Screen & Sound Tests"