kaspermeerts' SML disassembly

Cite as: kaspermeerts' SML disassembly
Original: https://github.com/kaspermeerts/supermarioland
Pinned: kaspermeerts/supermarioland @ 618d00ed6c330928e106719533c6e294ae5d5726
Accessed: 2026-10-21
Licence: none stated
Credit: Disassembly and comments by Kasper Meerts, with contributions from Retro-Hax.
Notes: Partial: the README estimates bank 0 at three quarters disassembled and banks 1–3 at a third to a half, the rest included from the ROM. It builds Super Mario Land (World) (Rev A).

Cited on

A jump starts on the frame A goes down while Mario's jump status (`$C207`) is 0 and his on-ground flag (`$C20A`) is set. Unless Mario is running, the jump also sets the jump index `$C208` to 2.	`bank3.asm L398–430bank3.asm L370–373`	Code
Measured in the game, a standing jump with A held moves Mario up nothing on the press frame, then 3, 3, and 2 px a frame to 24 px, then 1 px or 0 a frame to an apex of 33 px on frame 23. The fall retraces the rise in reverse, and he lands on frame 49.	`bank3.asm L398–430`	Verified
Letting go of A while Mario rises moves the jump index to `$0F`, near where the table's 1 px steps begin, unless the index is already at `$0F` or past it. Measured, a 1-frame tap reaches 10 px, 5 frames 19 px, 10 frames 29 px, and 15 frames or more the full 33.	`bank3.asm L384–389bank3.asm L338–348`	Verified
Measured, a running jump with A held rises 4, 4, 3, 3, then 2 px a frame and peaks at 41 px on frame 25, higher than the standing jump's 33.	`bank3.asm L417–422`	Verified