Here are some cheats and tips for the game Shinobi.
21F 055 2A2 Infinite energy
006 06D 3BE Infinite lives
06B 75C F72 Start with 6 lives
08B 75C F72 Start with 8 lives
09B 75C F72 Start with 9 lives
21E BA5 2A2 On highway stage, jump onto road and stop traffic