0x1F - Long Firebar (castle) AND sets previous enemy slot to 0x20 or else only half of the line shows.

You can see this in 1.1, get the star and open the powerup at the top. If a powerup is on screen and a second one would appear, the first one disappears (completely). Powerup drawn? (Corresponds with hitbox at 0x04C4).

1 - Yes (not so much drawn as 'active' or something).

0x0C - Transforming to Fire Mario (cannot move).0x0A - Transforming from Large to Small (cannot move).0x09 - Transforming from Small to Large (cannot move).

Something to do with player x (same as 0x0002) Something to do with player y (but it skips to 0 every x frames, even when you dont move) Is used in vertical physics for gravity acceleration (value copied from 0x0709). Most (but not all?) of these addresses apply to the Japanese version of Lost Levels, otherwise known as Super Mario Bros.

(JU) (PRG0) and may not be correct for other dumps. This data is relevant to Super Mario Bros. The following article is a RAM map for Super Mario Bros.

Super mario bros deluxe world 1-3