Unfinished engineering

here are some unfinished discoveries

Objects

question block with shoe payload

0x3a, y, x, 0x43

brick with coin cache

0 y x 0x1a

corner terrain piece

0x11 y x 0x1 -- seems id 1 is terrain related, the 0x11 value seems like it can be anything and not make a difference.

But this was also a corner terrain piece 0x10 y x 0 ... hmmm....

0 y x 4 --- upper left corner terrain, ie

 ____
/   |
|   |
|   |
|___|

pink triangle "run on walls"

0x16 y x 0x52 -- this is one of those pink triangles that lets mario run on walls, it is the upper right corner variant, ie

....
 ...
  ..
   .

so far changing the initial 0x16 seems to make no difference

music blocks

mushroom then fireflower -> bank 0, id 0x21 mushroom then leaf -> bank 0, id 0x22 starman -> bank 0, id 0x23

hidden blocks

invisible then music block upon hit -> bank 0, id 0x20 invisible then 1up mushroom upon hit -> bank 0, id 0x1f invisible then coin upon hit -> bank 0, id 0x1e

bricks

p-block payload -> bank 0, id 0x1d climbing vine -> bank 0, d 0x1c

muncher

0 y x 0x15

Question block with coin cache

0 y x 0x14