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Metroid/RAM map
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| RAM | Purpose |
|---|---|
| 106 | Energy Variable. High nybble contains the "ones" place of the amount of energy Samus currently has. |
| 107 | Energy Variable. Low nybble contains the "tens" place of the amount of energy Samus currently has. |
| 10E | Weapon selection: 00=Arm Cannon, 01=Missile. Set this to FF for lots of missiles! :) |
| 200-2FF | Sprite DMA. |
| 6878 | Special items Samus is currently carrying. Contains an 8-bit value from 00 to FF (0 to 255). Each bit represents one of eight special items. Hex values are as follows: 1="Bombs", 2="Hi-Jump", 4="Long Beam", 8="Screw Attack", 10="Maru Mari", 20="Varia", 40="Wave Beam", 80="Ice Beam". For multiple weapons, add values in hex. (Ex: 16 for Maru Mari, Long Beam, and Hi-Jump.) |
| 6879 | The maximum number of missiles that Samus may carry at any given time. Contains an 8-bit value from 00 to FF (0 to 255). |
| 687A | The actual number of missiles that Samus is currently carrying. Contains an 8-bit value from 00 to FF (0 to 255). |