YXPPCCCT format

From SMWiki

The YXPPCCCT format (not to be confused with the YXPCCCTT format) is used for the sprite's OAM tile properties. The information is stored in binary and makes up a single byte.

Format

76543210
YXPPCCCT
X  : X flip
Y  : Y flip
PP : Priority 
CCC: Palette 
T  : Bit 8 of tile number

The YXPPCCCT bytes are always located at the sprite's OAM address + 3: $0203, $0207, and so on in SMW's case. A shorter way to describe that is n + 3. The functionality of the bits is as follows:

Y (bit 7):

0 = No Y flip (vertical mirroring)

1 = Y flip

X (bit 6):

0 = No X flip (horizontal mirroring)

1 = X flip

PP (bits 4-5):

00 = Appear behind everything except Layer 3 tiles with priority setting 0

01 = Appear behind everything except Layer 3 tiles (unless they have priority setting 1 and the "force above everything" bit is set)

10 = Appear in front of Layer 3 tiles (unless they have priority setting 1 and the "force above everything" bit is set) and Layer 1 and 2 tiles with priority setting 0; appear behind Layer 1 and 2 tiles with priority setting 0 (this is SMW's normal setting for most sprites)

11 = Appear in front of everything, except Layer 3 tiles with priority setting 1 if the "force above everything" bit is set

CCC (bits 1-3):

000 = Palette 8

001 = Palette 9

010 = Palette A

011 = Palette B

100 = Palette C

101 = Palette D

110 = Palette E

111 = Palette F

T (bit 0):

0 = Use the first GFX page

1 = Use the second GFX page