Other registers that used to be documented on this page are now at GPU Registers.
Registers
| NAME
|
PHYSICAL ADDRESS
|
PROCESS VIRTUAL ADDRESS
|
KERNEL VIRTUAL ADDRESS
|
WIDTH
|
| Parallax barrier enable
|
0x10202000
|
0x1ED02000
|
0xFFFD6000
|
0x4
|
| Parallax barrier PWM
|
0x10202004
|
0x1ED02004
|
0xFFFD6004
|
0x4
|
| LCD status
|
0x10202008
|
0x1ED02008
|
0xFFFD6008
|
0x4
|
| LCD clock disable
|
0x1020200C
|
0x1ED0200C
|
0xFFFD600C
|
0x4
|
| ?
|
0x10202010
|
0x1ED02010
|
0xFFFD6010
|
0x4
|
| LCD reset
|
0x10202014
|
0x1ED02014
|
0xFFFD6014
|
0x4
|
| Top Screen LCD Configuration
|
0x10202200
|
0x1ED02200
|
0xFFFD6200
|
0x600
|
| Bottom Screen LCD Configuration
|
0x10202A00
|
0x1ED02A00
|
0xFFFD6A00
|
0x600
|
| ?
|
0x10203200
|
0x1ED03200
|
0xFFFD7200
|
0x40
|
On screen-init (error screen), Boot11 sets 0x10202004 to 0xA390A39.
LCD Configuration
| Offset
|
Size
|
Description
|
| 0x00
|
0x4
|
Flags
|
| 0x04
|
0x4
|
Fill Color
|
| 0x10
|
0x10
|
Adaptive Backlight Area
|
| 0x20
|
0x4
|
GTH Ratio
|
| 0x24
|
0x4
|
Min GTH
|
| 0x28
|
0x4
|
MinMax
|
| 0x2C
|
0x4
|
ExMax
|
| 0x30
|
0x4
|
Inertia
|
| 0x38
|
0x4
|
MinRS
|
| 0x3C
|
0x4
|
MaxRS
|
| 0x40
|
0x4
|
Backlight Level
|
| 0x44
|
0x4
|
Backlight Interval
|
| 0x60
|
0x20
|
Dither
|
| 0x80
|
0x24
|
LutListRS
|
| 0xF0
|
0x0C
|
?
|
| 0x100
|
0x100
|
LCD calibration data, pulled from nand:/ro/sys/HWCAL0.dat offset 0x77C.
N3DS only. This area on old3DS is zero-filled and not writable.
|
| 0x200
|
0x400
|
?
|
Flags
| Bit
|
Description
|
| 0
|
Adaptive backlight on
|
| 8
|
?
|
| 9
|
?
|
Bits 8 and 9 control dither.
Fill Color
| Bit
|
Description
|
| 7-0
|
Red component intensity
|
| 15-8
|
Green component intensity
|
| 23-16
|
Blue component intensity
|
| 24
|
Enable
|
When the enable bit is set, the specified solid color is displayed on the LCD instead of the framebuffer.
Adaptive Backlight Area
| Offset
|
Description
|
| 0x00
|
X begin
|
| 0x04
|
X end
|
| 0x08
|
Y begin
|
| 0x0C
|
Y end
|
The values refer to 90° clockwise rotated screens.
Backlight Level
| Bit
|
Description
|
| 9-0
|
Backlight PWM duty on (0 = off)
|
Backlight Interval
| Bit
|
Description
|
| 9-0
|
Backlight PWM Interval, minus 1
|
| 16
|
Enable LCD (0 = disabled, 1 = enabled).
|
| 17
|
RS on (?)
|
| 18
|
?
|
On old 2DS, disabling the top LCD does nothing, disabling the bottom LCD affects both screens.
Setting bit 18 makes the screen darker.