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Super Mario Bros. 3/RAM map
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NOTE: All values in Table are Hexadecimal unless noted otherwise.
The following article is a RAM map for Super Mario Bros. 3.
| RAM | Purpose |
| 0A | Temp. used to adjust main character sprite vertical position |
| 15 | Increased by one every game cycle. Used as timer |
| 75 | On map screen vertical position. Multiples of 20, unless in boat. |
| 77 | Page counter on map screen |
| 79 | On map screen horizontal position. Multiples of 20, unless in boat. If multipaged, E0 shifts screen right, then 60, then D0, then 50. Shifting back to the left occurs at 20, then A0, then 20, then A0. |
| 90 | Mario/Luigi horizontal position. Changing may cause problems in Name Table. |
| A2 | Mario/Luigi vetical position in levels. |
| A3-?? | Enemy Sprite positions on screen |
| ED | Current Form: 00-Small, 01-Super, 02-Fire, 03-Racoon, 04-Frog, 05-Bear, 06-Hammer |
| EE | Mario/Luigi Character Sprite Displayed(gets set just before display) |
| EF | Mario/Luigi status flag: 40 facing right, 00 facing left |
| 0100-01FF | CPU Stack |
| 03DD | Power Meter in Status Bar, 7F is Full (Player Can Fly) |
| 0552 | Timer that is set after player is hit. Determine how long you flash (are invincible) |
| 0577 | Determines if Player is inside the Goomba Boot: 00-No, 01-Yes |
| 05EE-05F0 | Time remaining |
| 0715-0717 | current player score divided by dec10. (max F423F[dec999,999]) (There's a hard coded 0 in the score display) |
| 0736 | Mario # of Lives (max 63[dec99]) |
| 0737 | Luigi # of Lives |
| 0746 | Mario's Form that he will start next level as. When the level is loaded this value gets transferred to 00ED. |
| 0747 | For Luigi; See 0746. |
| 7D80-7D9B | Each Byte Represents an Item that Mario is Carrying (Pressing 'B' while at Map Screen): 00-No Item, 01-Mushroom, 02-Flower, 03-Leaf, 04-Frog, 05-Bear, 06-Hammer Bro Suit, 07-Cloud, 08-P-Wing, 09-Star, 0A-Anchor, 0B-Hammer, 0C-Whistle, 0D-Music Box. 0E and above will most likely crash the game, not completely tested though. |
| 7D9C-7D9E | Each Byte Represents a reward card Mario has 00-No Item, 01-Mushroom, 02-Flower, 03-Star |
| 7D9F-7DA1 | Storage for Mario Score (/dec10) |
| 7DA2 | # of coins Mario has |
| 7DA3-7DBE | Each Byte Represents an Item that Luigi is Carrying (Pressing 'B' while at Map Screen): 00-No Item, 01-Mushroom, 02-Flower, 03-Leaf, 04-Frog, 05-Bear, 06-Hammer Bro Suit, 07-Cloud, 08-P-Wing, 09-Star, 0A-Anchor, 0B-Hammer, 0C-Whistle, 0D-Music Box. 0E and above will most likely crash the game, not completely tested though. |
| 7DBF-7DC1 | Each Byte Represents a reward card Luigi has 00-No Item, 01-Mushroom, 02-Flower, 03-Star |
| 7DC2-7DC4 | Storage for Luigi Score(/dec10) |
| 7DC5 | # of coins Luigi has |
 | This page is rather stubbly and could use some expansion. Are you a bad enough dude to rescue this article? |