1. EABA-AA3Y - Master code, must be entered

2. A3WT-AA6G - Infinite lives

3. 9TZA-ABZY + BJZA-AAF0 - Each point worth 10

4. 9TEA-BCKL + TTEA-B93R + AEEA-AABN - Start on floating island

5. 9TEA-BCKL + TTEA-B93R + AAEA-ACBN - Start in windmill village

6. 9TEA-BCKL + TTEA-B93R + AEEA-ACBN - Start in town of fire

7. 9TEA-BCKL + TTEA-B93R + AAEA-AEBN - Start in Baron Rankle's tower

8. 9TEA-BCKL + TTEA-B93R + AEEA-AEBN - Start in horrible faced mountains

9. 9TEA-BCKL + TTEA-B93R + AAEA-AGBN - Start in crystal forest

10. 9TEA-BCKL + TTEA-B93R + AEEA-AGBN - Start on ice slides and giant hands

11. 9TEA-BCKL + TTEA-B93R + AAEA-AJBN - Start on dragons and demons

12. 9TEA-BCKL + TTEA-B93R + AEEA-AJBN - Start on base of morning star ladder

13. 9TEA-BCKL + TTEA-B93R + AAEA-ALBN - Start on Prince of Darkness

Code 14 charges up your power more quickly, but there must be at least one dot filled on the magic gauge for the code to work, and don't use it with the fireball!
14. AF3T-AAFY - Instant charge on magic armor/weapon