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Virtual Screen Size of 256 x 512 Dots, AGB Programming Manual, Rendering Functions

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AGB Programming Manual 1-3) Virtual Screen Size of 256 x 512 Dots 256 dots (32 blocks) 000H 002H 004H 03AH 03CH 03EH 040H 042H 044H 07AH 07CH 07EH 256 dots (32 blocks) 4C0H 4C2H 4C4H 4FA H 4FCH 4FEH 512 dots (64 blocks) 7C0H 7C2H 7C4H 800H 7FCH 7FEH 83EH Rendering Functions FC0H FFE H LCD display area 1-4) Virtual Screen Size of 512 x 512 Dots 256 dots (32 blocks) 512 dots (64 blocks) 256 dots (32 blocks) 000H 002H 004H 03AH 03CH 03EH 800H 83EH 256 dots (32 blocks) 040H 042H 004444HH 07AH 07CH 07EH 4C0H 4C2H 4C4H 4FAH 4FCH 4FEH 512 dots (64 blocks) 7C0H 7C2H 7C4H 1000H 7FCH 7FEH FC0H 103EH 1800H FFEH 183EH 256 dots (32 blocks) 17C0H LCD display area 17FEH 1FFEH ©1999 - 2001 Nintendo of America Inc. 46 D.C.N. AGB-06-0001-002B4

Section	Page
Introduction	3
Revision History	4
Table of Contents	9
Using This Manual	12
1 AGB System	13
1.1 System Overview	13
2 System Configuration	15
2.1 CPU Block Diagram	15
2.2 Complete Block Diagram	16
2.3 Memory Configuration and Access Width	17
2.4 Little-Endian	17
3 AGB Memory	18
3.1 Overall Memory Map	18
3.2 Memory Configuration	19
3.2.1 AGB Internal Memory	19
3.2.2 Game Pak Memory	20
3.3 Game Pak Memory Wait Control	21
3.3.1 Access Timing	23
3.3.2 Game Pak Bus	24
4 LCD	25
4.1 LCD Status	26
4.1.1 V Counter	26
4.1.2 General LCD Status	27
5 Image System	29
5.1 BG Modes	31
5.1.1 Details of BG Modes	31
5.1.2 VRAM Memory Map	32
6 Rendering Functions	33
6.1 Character Mode BG (BG Modes 0-2)	33
6.1.1 BG Control	33
6.1.2 Mosaic Size	39
6.1.3 VRAM Address Mapping of BG Data	40
6.1.4 Character Data Format	42
6.1.5 BG Screen Data Format	43
6.1.6 BG Screen Data Address Mapping for the LCD Screen	45
6.1.7 BG Rotation and Scaling Features	49
6.1.8 BG Scrolling	52
6.2 Bitmap Mode BGs (BG Modes 3-5)	53
6.2.1 BG Control	53
6.2.2 BG Rotation/Scaling	54
6.2.3 Pixel Data	54
6.2.4 Pixel Data Address Mapping for the LCD Screen	55
6.2.4.1 BG Mode 3 (32,768 colors,240x160 dots,1 frame buffer)	55
6.2.4.2 BG Mode 4 (256 colors,240x160 dots,2 frame buffers)	56
6.2.4.3 BG Mode 5 (32,768 colors,160x128 dots,2 frame buffers)	57
6.3 OBJ (Object)	58
6.3.1 OBJ Function Overview	58
6.3.2 Character Data Mapping	60
6.3.3 OAM	62
6.3.4 OBJ Rotation/Scaling Feature	70
6.4 Display Priority of OBJ and BG	72
7 Color Palettes	73
7.1 Color Palette Overview	73
7.2 Color Palette RAM	74
7.3 Color Data Format	76
8 Window Feature	77
8.1 Window Position Setting	77
8.2 Window Control	78
9 Color Special Effects	80
9.1 Selection of Color Special Effects	80
9.2 Color Special Effects Processing	82
10 Sound	84
10.1 Sound Block Diagram	84
10.2 Direct Sounds A and B	85
10.3 Sound 1	87
10.4 Sound 2	91
10.5 Sound 3	93
10.6 Sound 4	97
10.7 Sound Control	100
10.8 Sound PWM Control	104
11 Timer	106
12 DMA Transfer	108
12.1 DMA 0	109
12.2 DMA 1 and 2	113
12.3 DMA 3	117
12.4 DMA Problems: How to avoid them	122
13 Communication Functions	125
13.1 8-Bit/32-Bit Normal Serial Communication	128
13.2 16-Bit Multi-player Communication	134
13.3 UART Communication Functions	142
13.4 General Purpose Communication	148
13.5 JOY Bus Communication	150
13.6 AGB Game Link Cable	154
14 Key Input	155
14.1 Key Status	155
14.2 Key Interrupt Control	155
14.2.1 Interrupt Conditions	156
15 Interrupt Control	157
15.1 System-Allocated Area in Work RAM	159
15.2 Interrupt Operation	160
15.2.1 Normal Interrupt	160
15.2.2 Multiple Interrupts	161
16 Power-Down Functions	163
16.1 Stop Function	163
16.2 Halt Function	164
17 AGB System Calls	165
17.1 System Call Operation	165
17.1.1 Normal Calls	165
17.1.2 Multiple Calls	167

Match case Limit results 1 per page

AGB Programming Manual

Rendering Functions

D.C.N. AGB-06-0001-002B4

1-3) Virtual Screen Size of 256 x 512 Dots

LCD display area

000

002

004

040

042

044

03A

4C0

4C2

4C4

FC0

FFE

07A

256 dots

(32 blocks)

256 dots

(32 blocks)

512 dots

(64 blocks)

7C0

800

7C2

7C4

03C

7FE

83E

4FC

4FE

4FA

07C

03E

07E

7FC

1-4) Virtual Screen Size of 512 x 512 Dots

LCD display area

000

002

004

800

7FE

7C0

7C2

7C4

7FC

1000

256 dots

(32 blocks)

512 dots

(64 blocks)

256 dots

(32 blocks)

512 dots

(64 blocks)

256 dots

(32 blocks)

256 dots

(32 blocks)

83E

03C

03E

07C

07E

4FC

4FE

FC0

103E

1800

FFE

183E

17C0

17FE

1FFE

040

042

044

03A

07A

4C0

4C2

4C4

4FA