GBA Register Table

AGB Register Reg ister Table Table ( 1 / 8) ddr

Register

00

DISPCNT

D15

D14

D13

D12

D11

Window Display Flag OBJ

WIN1

WIN0

D10

D09

D08

Display Flag OBJ

BG3

BG2

BG1

04

DISPSTAT

06

VCOUNT

08

BG0CNT

Size

-

Screen Base Block

0A

BG1CNT

Size

-

Screen Base Block

0C

BG2CNT

Size

0E

BG3CNT

Size

10

BG0HOFS

-

-

-

-

-

-

-

12

BG0VOFS BG0VOF S

-

-

-

-

-

-

14

BG1HOFS

-

-

-

-

-

16

BG1VOFS BG1VOF S

-

-

-

-

18

BG2HOFS

-

-

-

1A

BG2VOFS BG2VOF S

-

-

1C

BG3HOFS

-

1E

BG3VOFS BG3VOF S

-

20

BG2PA BG2PA

22

BG0

V Count Setti ng -

-

-

-

-

-

-

D07

D06

D05

D04

D03

Forced Blank

OBJ Map Format

OBJ Hoff

Frame Buffer No.

CGB mode

-

-

V counter Match Interrupt

HBlank Interrupt

VBlank Interrupt

-

D02

D01

D00

BG Mode V Counter Eval.

HBlank Status

VBlank Status

V Counter Counte r Value Color Mode Color Mode Color Mode Color Mode

R/W

Initial Value

R/W

0080h

R/W

0000h

R

0000h

Mosaic

0

0

Character Base Block

Priority

R/W

0000h

Mosaic

0

0


Priority

R/W

0000h

Mosaic

0

0


Priority

R/W

0000h

Mosaic

0

0


Priority

R/W

0000h

Horizontal Offset

W

0000h

-

Vertical Offset

W

0000h

-

-

Horizontal Offset

W

0000h

-

-

-

Vertical Offset

W

0000h

-

-

-

-

Horizontal Offset

W

0000h

-

-

-

-

-

Vertical Offset

W

0000h

-

-

-

-

-

-

Horizontal Offset

W

0000h

-

-

-

-

-

-

Vertical Offset

W

0000h

dx: Distance moved Along same line in x direction

W

0100h

BG2PB

dmx: Distance moved Along next line in x direction

W

0000h

24

BG2PC BG2PC

dy: Distance moved Along same line in y direction

W

0100h

26

BG2PD

dmy: Distance moved Along next line in y direction

W

0000h

Area Overflow Area Overflow

©1999-2001 Nintendo of America Inc.

Screen Base Block Screen Base Block

1

D.C.N. AGB-06-0002-001A3

7/23/2001


Register

28

BG2X_L

2A

BG2X_H

2C

BG2Y_L

2E

BG2Y_H

30

BG3PA BG3PA

32

D15

D14

D13

D12

D11

D10

D09

D08

D07

D06

D05

R/W

Initi al Value

W

0000h

W

0000h

W

0000h

W

0000h

dx: Distance moved Along same line in x direction

W

0100h

BG3PB

dmx: Distance moved Along next line in x direction

W

0000h

34

BG3PC

dy: Distance moved Along same line in y direction

W

0000h

36

BG3PD

dmy: Distance moved Along next line in y direction

W

0100h

38

BG3X_L

x-Coordinate of reference Starting Starting point (rotation/scaling results)

W

0000h

3A

BG3X_H

W

0000h

3C

BG3Y_L

W

0000h

3E

BG3Y_H

W

0000h

40

WIN0H

Window 0 upper- left x-Coordinate x-Coordinate

Window 0 lower- right x-Coordinate

W

0000h

42

WIN1H

Window 1 upper- left x-Coordinate x-Coordinate

Window 1 lower- right x-Coordinate

W

0000h

44

WIN0V

Window 0 upper- left y-Coordinate y-Coordinate

Window 0 lower- right y-Coordinate

W

0000h

46

WIN1V

Window 1 upper- left y-Coordinate y-Coordinate

Window 1 lower- right y-Coordinate

W

0000h

48

WININ

R/W

0000h

R/W

0000h

-

-

-

-

D02

D01

D00

x-Coordinate of reference Starting Starting point (rotation/scaling results) y-Coordinate of reference Starting Starting point (rotation/scaling results)

-

-

-

-

-

-

-

y-Coordinate of reference Starting point (rotation/scaling results)

-

x-Coordinate of reference Starting point (rotation/scaling results) y-Coordinate of reference Starting Starting point (rotation/scaling results)

-

-

-

-

y-Coordinate of reference Starting point (rotation/scaling results)

-

-

Special Effects

Control for Inside of Window 0 -

OBJ

BG3

BG2 BG2

BG1

-

BG0

Special Effects

OBJ Window Control WINOUT

D03

x-Coordinate of reference Starting Starting point (rotation/scaling results)

Control for Inside of Window 1

4A

D04

-

-


Special Effects

BG3

BG2 BG2

BG3

BG2

BG1

BG0

Control for Outside of Windows 0 And 1 -

OBJ

OBJ

BG1

BG0

2

-

Special Effects

OBJ

BG3

BG2

BG1

D.C.N. AGB-06-0002-001A3

BG0

7/23/2001

AGB Register Reg ister Table Table ( 3 / 8) ddr 4C

Register

D15

D14

D13

D 12 D12

D11

D 10 D10

D 09

D08 D 08

D 07

MOSAIC Vertical Vertical Size BLDCNT

-

Horizontal Size

OBJ

BG3

BG2

BG1

BG0

BLDALPHA

-

-

-

54

BLDY

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

62 64 68 6C 70 72 74 78 7C 80

82

SOUNDCNT _H

84

SOUNDCNT _X

88

SOUNDBIAS

-

-

-

-

D00

R/W

Initi al Value

W

0000h

R/W

0000h

Horizontal Size st

OBJ

BG3

BG2

BG1

BG0

-

-

Color Special Effect Eff ect Coefficient Coeff icient EVA

R/W

0000h

-

-

-

Color Special Effect Coefficient Coeff icient EVY

W

0000h

NR10

R/W

0000h

NR12

NR11

R/W

0000h

NR14

NR13

R/W

0000h

NR22

NR21

R/W

0000h

NR24

NR23

R/W

0000h

NR30

R/W

0000h

NR32

NR31

R/W

0000h

NR34

NR33

R/W

0000h

NR42

NR41

R/W

0000h

NR44

NR43

R/W

0000h

NR51

NR50

R/W

-

-

-

-

-

DSB Output Ratio

Direct Sound A

TIMER

R Output

FIFO A reset

-

-

-

-

-


D01

-

L Output

PWM modulation resolution

D02

1 target pixel BD

Color Special Effect Eff ect Coefficient Coeff icient EVB

Direct Sound B FIFO B reset

D03

Type of Color Special Effect

52

SOUND1CN T_L SOUND1CN T_H SOUND1CN T_X SOUND2CN T_L SOUND2CN T_H SOUND3CN T_L SOUND3CN T_H SOUND3CN T_X SOUND4CN T_L SOUND4CN T_H SOUNDCNT _L

D04

Vertical Vertical Size

2 target pixel

BD

60

D05

BG Mosaic

nd

50

D06

OBJ Mosaic

TIMER

L Output

R Output

-

-

-

-

-

-

-

-

-

-

DSA Output Ratio

Sound 1-4 Mix Ratio

NR52 Bias Level

3

D.C.N. AGB-06-0002-001A3

R/W

0000h

R/W

0000h

R/W

0000h

7/23/2001

AGB Register Reg ister Table Table ( 4 / 8) ddr 90 92 94 96 98 9A 9C 9E

Register

D15

WAVE_RAM 0_L WAVE_RAM 0_H WAVE_RAM 1_L WAVE_RAM 1_H WAVE_RAM 2_L WAVE_RAM 2_H WAVE_RAM 3_L WAVE_RAM 3_H

D14

D13

D12

D11

D 10 D10

D09

D08

D07

D06

D05

D04

D03

D02

D01

D00

R/W

Initi al Value

Step 2

Step 3

Step 0

Step 1

R/W

-

Step 6

Step 7

Step 4

Step 5

R/W

-

Step 10

Step 11

Step 8

Step 9

R/W

-

Step 14

Step 15

Step 12

Step 13

R/W

-

Step 18

Step 19

Step 16

Step 17

R/W

-

Step 22

Step 23

Step20

Step 21

R/W

-

Step 26

Step 27

Step 24

Step 25

R/W

-

Step 30

Step 31

Step 28

Step 29

R/W

-

A0

FIFO_A_L

Sound Data 1

Sound Data0

W

-

A2

FIFO_A_H

Sound Data 3

Sound Data2

W

-

A4

FIFO_B_L

Sound Data 1

Sound Data 0

W

-

A6

FIFO_B_H

Sound Data 3

Sound Data 2

W

-

B0

DMA0SAD_L

W

0000h

B2

DMA0SAD_ H

W

0000h

B4

DMA0DAD_L

W

0000h

B6

DMA0DAD_ H

-

-

W

0000h

B8

DMA0CNT_L

-

-

BA

DMA0CNT_ H

DMA 0 Source Address -

-

-

-

-

DMA 0 Source Address DMA 0 Destination Address

-

-

-

DMA 0 Destination Address Word Count

W

DMA 0 Control Enable

Interrupt


Startup Timing

-

Transfer Width

Continuous

Source Address Control

4

Destination Address Control

R/W -

-

-

-

D.C.N. AGB-06-0002-001A3

0000h

-

7/23/2001


Register

D15

D14

BC

DMA1SAD_L

BE

DMA1SAD_ H

C0

DMA1DAD_L

C2

DMA1DAD_ H

-

-

C4

DMA1CNT_L

-

-

C6

DMA1CNT_ H

-

-

Enable

Interrupt

CA CC

DMA2DAD_L

CE

DMA2DAD_ H

-

-

D0

DMA2CNT_L

-

-

D2

DMA2CNT_ H

D6 D8

DMA3DAD_L

DA

DMA3DAD_ H

DC

DMA3CNT_L

DE

DMA3CNT_ H

D10

D09

D08

D07

D06

D05

D04

D03

D02

D01

D00

-

-

DMA 1 Source Address

-

-

-


R/W

Initi al-Value

W

0000h

W

0000h

W

0000h

W

0000h

W

DMA 1 Control

DMA2SAD_ H

DMA3SAD_ H

D11

DMA 1 Destination Address

DMA2SAD_L

DMA3SAD_L

D12

DMA 1 Source Address Addres s

C8

D4

D13

Startup timing

-

Transfer Width

Continuous



-

-

-

-

DMA 2 Source Address Addres s -

-

-

-


-

-

-

R/W

0000h

W

0000h

W

0000h

W

0000h

W

0000h

-


W

DMA 2 Control Enable

Interrupt

Startup timing

-

Transfer Width

Continuous



-

-

-

-

DMA 3 Source Address Addres s -

-

-

-


-

-

-

-

R/W

0000h

W

0000h

W

0000h

W

0000h

W

0000h

W

0000h

R/W

0000h

-

DMA 3 Destination Address Word Count DMA 3Control

Enable

Interrupt


Startup timing

DREQ

Transfer Width

Continuous


5


-

-

-

-

D.C.N. AGB-06-0002-001A3

-

7/23/2001


Register

100

TM0CNT_L

102

TM0CNT_H

D15

D14

D13

D12

D11

D10

D09

D08

D07

D06

D05

D04

D03

D02

D01

D00

Timer 0 Setting

R/W

Initi al-Value

R/W

0000h

R/W

0000h

R/W

0000h

R/W

0000h

R/W

0000h

R/W

0000h

R/W

0000h

R/W

0000h

Timer 0 Control 104

TM1CNT_L

106

TM1CNT_H

-

-

-

-

-

-

-

Operation

Interrupt

-

-

-

Count Up Timing

Prescalar

Timer 1 Setting Timer 1 Control -

108

TM2CNT_L

10A

TM2CNT_H

-

-

-

-

-

-

-

Operation

Interrupt

-

-

-

Count Up Timing

Prescalar


10C

TM3CNT_L

10E

TM3CNT_H

-

-

-

-

-

-

-

Operation

Interrupt

-

-

-

Count Up Timing

Prescalar


-


-

-

-

-

-

-

Operation

6

Interrupt

-

-

-

Count Up Timing

Prescalar

D.C.N. AGB-06-0002-001A3

7/23/2001


20

22

Register

D15

D14

D13

D12

SIODATA32_ L(32bit Normal SIO), SIOMULTI0( Multi Play) SIODATA32_ H(32bit Normal SIO), SIOMULTI1( Multi Play)

R/W

InitialValue

32Bit Normal SIO Communication Data and Multi-play Communication Data 0

R/W

0000h

32Bit Normal SIO Communication Data and Multi-play Communication Data 1

R/W

0000h

D11

D10

D09

D08

D07

D06

D05

D04

D03

D02

D01

D00

24

SIOMULTI2 SIOMULTI2

Multi-play Communication Data 2

R/W

0000h

26

SIOMULTI3 SIOMULTI3

Multi-play Communication Data 3

R/W

0000h

28

SIOCNT

R/W

0000h

Normal SIO Communicati on Multi-play Communicati on

2A

UART Communicatio n SIOMULTI_S END (Multi Play) SIODATA8 (Normal SIO)

30

KEYINPUT

32

KEYCNT

Port Port Control

SIO Control Transfer Bit Length

-

Interrupt Enable

-

Interrupt Enable

1

0

-

-

-

-

1

1

Receive Enable Flag

Send Enable Flag

0

-

-

-

-

Start

-

-

-

Start (master) Busy (slave)

Comm unicati on Error Flag

Parity Enable Flag

FIFO Enable Flag

Data Length

Error Flag

-

Transfer Enable Flag Send

Transfer Enable Flag Receive

Multi-play ID

SD Terminal Monitor

SI Terminal Monitor

Baud Rate

R/W

0000h

Parity Control

CTS Flag

Baud Rate

R/W

0000h

R/W

0000h

R/W

0000h

R/W

0000h

R/W

0000h *

-

Receive Data Flag

Send Data Flag

Shift Clock Freq.

Shift Clock

Communication Data -

-

-

-

-

-

-

-

8Bit Normal SIO Communication Data

-

-

-

-

-

-

L

R

Down

Up

L

R

Start

Select

B

A

Up

L

R

Start

Select

B

A

SD

SC

Key Interrupt Control

34

RCNT

Interrupt Condi-tion s

Interrupt Enable

Communication Function Select

-

-

-

-

L

R

-

-

-

-

-

Interrupt Enable

Down

Input/Output Select SO

SI

SD

Data Bit SC

SO

SI

The initial value for RCNT register is 0000h, but a user program starts after 8000h is set by a monitor ROM.


7

D.C.N. AGB-06-0002-001A3

7/23/2001


Register

D15

D14

D13

D12

D11

D10

D09

D08

D07

D06

D05

D04

D03

D02

D01

D00

-

-

-

Send Complete

Receive Complete

Device reset signal receive

R/W

InitialValue

R/W

0000h

JOY Bus Communication Control 140

JOYCNT -

-

-

-

-

-

-

-

-

Interrupt

150

JOY_RECV_ L

JOY Bus Communication Receive Data 0

R/W

0000h

152

JOY_RECV_ H

JOY Bus Communication Receive Data 1

R/W

0000h

154

JOY_TRANS _L

JOY Bus Communication Send Data 0

R/W

0000h

156

JOY_TRANS _H

JOY Bus Communication Send Data 1

R/W

0000h

158

JOYSTAT

R/W

0000h

R/W

0000h

R/W

0000h

R/W

0000h

R/W

0000h

JOY Bus Communication Receive Status -

-

-

-

-

-

-

-

-

General Purpose Flag

Send Status Flag

-

Receive Status Flag

-

TMR3

TMR 2

TMR 1

TMR0

V Counter Match

H Blank

V Blank

TMR3

TMR 2

TMR 1

TMR0

V Counter Match

H Blank

V Blank

-

Interrupt Enable Flag 200

IE -

Game Pak

-

-

Game Pak

-

Key

DMA 3

DMA 2

DMA 1

DMA 0

SIO

Interrupt Request Flag 202

IF

204

WAITCNT

Game Pak Type

Prefetch

-

208

IME

-

-

-


Key

DMA 3

DMA 2

PHI Terminal Output Control -

-

DMA 1

DMA 0

SIO

Wait State 2 Wait Control -

-


-

8

-


-

-

SRAM Wait Control -

D.C.N. AGB-06-0002-001A3

-

Interru ptMast er Flag

7/23/2001

GBA Register Table

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