MMIO register table/PPU: Difference between revisions

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(color window is not just color math)
(sub screen CGWSEL is transparent)
 
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| style="text-align: right" | <tt style="white-space: nowrap">MMSS ..AD</tt>
| style="text-align: right" | <tt style="white-space: nowrap">MMSS ..AD</tt>
| W8
| W8
| main/sub screen color window black regions (MS), fixed/subscreen (A), direct color (D).
| main/sub screen color window black/transparent regions (MS), fixed/subscreen (A), direct color (D).
|-
|-
! [[PPU registers#CGADSUB|CGADSUB]]
! [[PPU registers#CGADSUB|CGADSUB]]

Latest revision as of 01:49, 13 October 2022

See: MMIO register table

Name Address Bits Type Notes
INIDISP $2100 F... BBBB W8 Forced blanking (F), screen brightness (B).
OBJSEL $2101 SSSN NbBB W8 OBJ sprite size (S), name secondary select (N), name base address (B).
OAMADDL
OAMADDH
$2102
$2103
AAAA AAAA
P... ...B
W16 OAM word address (A).
Priority rotation (P), address high bit (B).
OAMDATA $2104 DDDD DDDD W8x2 OAM data write byte (2x for word) (D), increments OAMADD byte.
BGMODE $2105 4321 PMMM W8 Tilemap tile size (#), BG3 priority (P), BG mode (M).
MOSAIC $2106 SSSS 4321 W8 Mosaic size (S), mosaic BG enable (#).
BG1SC
BG2SC
BG3SC
BG4SC
$2107
$2108
$2109
$210A
AAAA AAYX W8 Tilemap VRAM address (A), vertical tilemap count (Y), horizontal tilemap count (X).
BG12NBA $210B BBBB AAAA W8 BG2 CHR base address (B), BG1 CHR base address (A).
BG34NBA $210C DDDD CCCC W8 BG4 CHR base address (D), BG3 CHR base address (C).
BG1HOFS
M7HOFS
BG1VOFS
M7VOFS
$210D

$210E
.... ..XX XXXX XXXX
...x xxxx xxxx xxxx
.... ..YY YYYY YYYY
...y yyyy yyyy yyyy
W8x2
W8x2
W8x2
W8x2
BG1 horizontal scroll (X).
Mode 7 horizontal scroll (x).
BG1 vertical scroll (Y).
Mode 7 vertical scroll (y).
BG2HOFS
BG2VOFS
BG3HOFS
BG3VOFS
BG4HOFS
BG4VOFS
$210F
$2110
$2111
$2112
$2113
$2114
.... ..XX XXXX XXXX
.... ..YY YYYY YYYY
W8x2
W8x2
BG horizontal scroll (X).
BG vertical scroll (Y).
VMAIN $2115 M... RRII W8 VRAM address increment mode (M), remapping (R), increment size (I).
VMADDL
VMADDH
$2116
$2117
LLLL LLLL
hHHH HHHH
W16 VRAM word address.
VMDATAL
VMDATAH
$2118
$2119
LLLL LLLL
HHHH HHHH
W16 VRAM data write. Increments VMADD after write according to VMAIN setting.
M7SEL $211A RF.. ..YX W8 Mode 7 tilemap repeat (R), fill (F), flip vertical (Y), flip horizontal (X).
M7A $211B DDDD DDDD dddd dddd W8x2 Mode 7 matrix A or signed 16-bit multiplication factor.
M7B $211C DDDD DDDD dddd dddd W8x2 Mode 7 matrix B or signed 8-bit multiplication factor.
M7C $211D DDDD DDDD dddd dddd W8x2 Mode 7 matrix C
M7D $211E DDDD DDDD dddd dddd W8x2 Mode 7 matrix D
M7X $211F ...X XXXX XXXX XXXX W8x2 Mode 7 center X
M7Y $2120 ...Y YYYY YYYY YYYY W8x2 Mode 7 center Y
CGADD $2121 AAAA AAAA W8 CGRAM word address.
CGDATA $2122 .BBB BBGG GGGR RRRR W8x2 CGRAM data write, increments CGADD byte address after each write.
W12SEL $2123 DdCc BbAa W8 Enable (ABCD) and Invert (abcd) windows for BG1 (AB) and BG2 (CD).
W34SEL $2124 DdCc BbAa W8 Enable (EFGH) and Invert (efgh) windows for BG3 (EF) and BG2 (GH).
WOBJSEL $2125 LlKk JjIi W8 Enable (IJKL) and Invert (ijkl) windows for OBJ (IJ) and color (KL).
WH0 $2126 LLLL LLLL W8 Window 1 left position.
WH1 $2127 RRRR RRRR W8 Window 1 right position.
WH2 $2128 LLLL LLLL W8 Window 2 left position.
WH3 $2129 RRRR RRRR W8 Window 2 right position.
WBGLOG $212A 4433 2211 W8 Window mask logic for BG layers (00=OR, 01=AND, 10=XOR, 11=XNOR).
WOBJLOG $212B .... CCOO W8 Window mask logic for OBJ (O) and color (C).
TM $212C ...O 4321 W8 Main screen layer enable (PPU registers#).
TS $212D ...O 4321 W8 Sub screen layer enable (#).
TMW $212E ...O 4321 W8 Main screen layer window enable.
TSW $212F ...O 4321 W8 Sub screen layer window enable.
CGWSEL $2130 MMSS ..AD W8 main/sub screen color window black/transparent regions (MS), fixed/subscreen (A), direct color (D).
CGADSUB $2131 MHBO 4321 W8 Color math add/subtract (M), half (H), backdrop (B), layer enable (O4321).
COLDATA $2132 BGRC CCCC W8 Fixed color channel select (BGR) and value (C).
SETINI $2133 EX.. HOiI W8 External sync (E), EXTBG (X), Hi-res (H), Overscan (O), OBJ interlace (i), Screen interlace (I).
MPYL
MPYM
MPYH
$2134
$2135
$2136
LLLL LLLL
MMMM MMMM
HHHH HHHH
R24 24-bit signed multiplication result.
SLHV $2137 .... ....
R8 Software latch for H/V counters.
OAMDATAREAD $2138 DDDD DDDD
R8 Read OAM data byte, increments OAMADD byte.
VMDATALREAD
VMDATAHREAD
$2139
$213A
LLLL LLLL
HHHH HHHH
R16 VRAM data read. Increments VMADD after read according to VMAIN setting.
CGDATAREAD $213B .BBB BBGG GGGR RRRR R8x2 CGRAM data read, increments CGADD byte address after each write.
OPHCT $213C ...H HHHH HHHH HHHH R8x2 Output horizontal counter.
OPVCT $213D ...V VVVV VVVV VVVV R8x2 Output vertical counter.
STAT77 $213E TRM. VVVV
R8 Sprite overflow (T), sprite tile overflow (R), master/slave (M), PPU1 version (V).
STAT78 $213F FL.M VVVV
R8 Interlace field (F), counter latch value (L), NTSC/PAL (M), PPU2 version (V).