Mega Man IV:RAM map:Sprite Flags

LSB to MSB

Bit	Function	Details
0-1	Object Wall Bits	See note
2	1= Invisible 0= Visible
3	If set, objects are not erased when moving out of screen.	See note
4	Apply X Scrolling when drawing sprites?	[ 1= Yes ] Probably always set???
5	Sprite BG Priority	[ 0= No Sprite BG Priority, 1= Sprite BG Priority ]
6	Direction	[ 0= Face Left, 1= Face Right]
7	Object is weapon: hit enemy?	[ 0= Doesn't hit enemies, 1= Hit enemies ]
	Object is enemy: is on visible screen?	[ 0= Enemy not on visible screen, 1= Enemy on visible screen ]

Note:
0-1: If value is 1, 2, 3, the Object have solids parts. If Mega Man hits a non solid parts, he ends up on top. Here are the solid parts.???

1: Top

2: All

3: Top, Left, Right (if hit object by under, Mega Man is replaced at a certain position from the block (the right, left or top)

3:

(Both Horizontally and Vertically (??? I think if 01 or more in $0390, they are erased, but not $ff and higher)

If object can hurt Mega Man, they can touch him, if they are in another screen.