1943 POKES BY JOHN GIRVIN

ADDRESS    POKE    EFFECT
 74DC       00     Most enemies don't fire
 7B8A       FF

 7D4C       00     Difficult game!

 7A21       00     Infinite energy

 9AC9       C3     Invulnerable to enemy bullets

 9B80       C3     Invulnerable to crashing into enemy planes

 9B88       C3     Energy goes to maximum when you hit an enemy plane