Game Boy Interface/Standard Edition

Game Boy Interface

Information
Author(s)	Extrems
Type	Utility
Version	Rolling release
Licence	All rights reserved
Links
Download main package Download extra package
Website
Discussion
Source

The author's original vision, Game Boy Interface Standard Edition (GBI) features an advanced video renderer exercising the GameCube hardware to its fullest. A port of mGBA for GameCube and Wii, dubbed Enhanced mGBA, is based upon it.

Controls

On-screen display

Nintendo GameCube	Nintendo GameCube Controller	Logitech Speed Force	Nintendo 64 Controller	Action
	A/B Buttons or Z and Start/Pause Buttons	A/B Buttons or Z and Start/Pause Buttons	A/B Buttons or Z and Start Buttons	Hide on-screen display
	X Button or C Stick Left	X Button	C Button Left	Toggle on-screen display
	Y Button	Y Button		Revert offset/zoom
	Z Button	Z Button	Z Button	Take screenshot
	+Control Pad	+Control Pad	+Control Pad	Offset
	L/R Buttons	L/R Buttons	L/R Buttons	Zoom
Reset Button	X, Y and Start/Pause Buttons (Hold for 1.5 seconds)		L, R and Start Buttons	Recalibrate controller

In-game

Nintendo GameCube	Nintendo GameCube Controller	Logitech Speed Force	Nintendo 64 Controller	Action
	A/B Buttons	A/B Buttons or Accelerator/Brake Pedals	A/B Buttons	A/B Buttons
	X Button or C Stick Left	X Button	C Button Left	Toggle on-screen display
	Y Button	Y Button		Turbo or Select
	Z Button	Z Button	Z Button	Select
	Start/Pause	Start/Pause	Start	Start
	+Control Pad or Control Stick	+Control Pad or Steering Wheel	+Control Pad or Control Stick	+Control Pad
	L/R Buttons	L/R Buttons	L/R Buttons	L/R Buttons (Only for Game Boy Advance)
Reset Button	B, X and Start/Pause Buttons	B, X and Start/Pause Buttons	Z, R, A, B and Start Buttons	Power Switch
	B, X and Start/Pause Buttons (Hold for 0.5 seconds)	B, X and Start/Pause Buttons (Hold for 0.5 seconds)	Z, R, A, B and Start Buttons (Hold for 0.5 seconds)	Exit
Reset Button	X, Y and Start/Pause Buttons (Hold for 1.5 seconds)		L, R and Start Buttons	Recalibrate controller
	Z and Start/Pause Buttons	Z and Start/Pause Buttons	Z and Start Buttons	Multi-play boot (Only in Game Boy Advance BIOS)

DK Bongos Controller	Active Life Mat Controller	Action
Bottom Right/Left	Orange Up/Right	A/B Buttons
Hand Clap	- Button	Select
Start/Pause	+ Button	Start
Top Right	Blue or Orange Square	+Control Pad Right
Top Left	Blue Left	+Control Pad Left
	Blue Up	+Control Pad Up
	Blue or Orange Down	+Control Pad Down

Options

--aspect=<w:h>

Specify screen aspect ratio. The default is the Progressive Scan Mode system setting (4:3 or 16:9).

Setting this option to 3:2 is not recommended unless interpreting 720×480 as square pixels.

--offset=<x:y>

Set offset. The default is the Screen Position system setting (-32 to +32).

--zoom=<x:y>

Set zoom (default: auto).

--zoom-auto[=<ratio>]

Enable best fit for a given screen size ratio, or safe area. The default is the Game Boy Player Start-up Disc's Screen Size setting (0.75 or 0.875).

--zoom-step=<size>

Set zoom step size (default: 0.125).

--rotate=<0-359>

Set rotation (default: 0).

--poll=<0-11>

Set controller polling rate. Use if your third-party controller or controller adapter is malfunctioning.

Not applicable to Nintendo 64 Controllers using a passive connector adapter.

0:	VSync (most compatible)
1:	1000Hz (default)
2:	500Hz
3:	350Hz
4:	300Hz
5:	250Hz
6:	200Hz
7:	150Hz
8:	150Hz
9:	125Hz
10:	125Hz
11:	100Hz

Note: The polling rate will be doubled or halved in tandem with the refresh rate.

--turbo=<on:off>

Set autofire interval (default: 3:3).

When zero, Turbo acts as Select instead.

--movie=<path>, --no-movie

Play input log (default: no).

--movie-record, --no-movie-record

Record input log (default: no).

--overlay=<path>, --no-overlay

Load texture palette for graphic overlays (default: frame.tpl.gz).

--overlay-id=<ID>

Set texture palette index for graphic overlay. The default is the Game Boy Player Start-up Disc's Frame setting (0 to 19).

--overlay-scale=<x:y>

Set texture scale for graphic overlay (default: auto).

--filter=<[none|blend|deflicker|accumulate|scale2x[ex|plus]|eagle2x|scan2x|normal2x][,prescale|no-prescale]>

Set image doubling or screen filter. The default is the Game Boy Player Start-up Disc's Screen Filter setting (none, blend, deflicker).

none

Also known as the Sharp screen filter.

blend[=<red[:green[:blue]]>]

Blend frames n and n-1 (default: 0.55).

Also known as the Soft screen filter.

deflicker[=<red[:green[:blue]]>]

Blend frames n and n-1 where n and n-2 are equal (default: 0.55).

Also known as the Normal screen filter.

accumulate[=<red[:green[:blue]]>]

Blend frames with accumulation buffer (default: 0.55).

As used by the Nintendo 3DS Ambassador games.

scale2xex

Apply enhanced EPX/Scale2×/AdvMAME2× algorithm with Y’C’_BC’_R difference.

scale2xplus

scale2x

Apply EPX/Scale2×/AdvMAME2× algorithm.

eagle2x

Apply Eagle algorithm.

scan2x

Apply simple scanlines.

normal2x

prescale, no-prescale

Enable prescaling filter (default: no).

Note: Any chosen filter will also apply to screenshots, but not to video streaming.

--dither=<none|threshold|bayer8x8|bayer4x4|bayer2x2|cluster8x8|cluster4x4>

Set dithering algorithm (default: threshold). Setting this option to none is not recommended when using linear RGB rendering.

Applied during prescaling and temporal interpolation.

--scaler=<nearest|bilinear|area|box>

Set image scaling filter. Setting this option to nearest is not recommended when using fractional scaling or a non-square pixel aspect ratio.

nearest:	Nearest-neighbor interpolation (fastest)
bilinear:	Bilinear interpolation
area:	Sharp bilinear interpolation (default)
box:	Inverse sharp bilinear interpolation

--profile-intent=<perceptual|relative|saturation|absolute>

Set color rendering intent (default: perceptual).

--profile=<srgb|gambatte|gba|gbasp|gbc|gbi|hicolour|higan|nds|palm|psp>

Set quick color profile.

Overrides --matrix, --input-gamma, --output-gamma, --brightness and --contrast.

srgb:	Emulator
gambatte:	Gambatte / higan / ares
gba:	Game Boy Advance
gbasp:	Game Boy Advance SP (AGS-101)
gbc:	Game Boy Color
gbi:	Game Boy Interface (2015–2017)
hicolour:	Gameboy Hi-Colour Convertor
higan:	higan / ares
nds:	Nintendo DS
palm:	Palm Treo 700p
psp:	PlayStation Portable

--matrix=<identity|gambatte|gba|gbasp|gbc|gbi|hicolour|higan|nds|palm|psp|vba>

Set color matrix (default: gbi).

This translates the RGB color primaries to the standard RGB color space.

identity:	Identity matrix
gambatte:	Gambatte / higan / ares
gba:	Game Boy Advance (by Pokefan531)
gbasp:	Game Boy Advance SP (by Pokefan531)
gbc:	Game Boy Color (by Pokefan531)
gbi:	Game Boy Interface
hicolour:	Gameboy Hi-Colour Convertor (by Pokefan531)
higan:	higan / ares
nds:	Nintendo DS (by Pokefan531)
palm:	Palm Treo 700p (by Pokefan531)
psp:	PlayStation Portable (by Pokefan531)
vba:	VisualBoyAdvance-M (by Pokefan531)

--input-gamma=<red[:green[:blue]]>

Set gamma (default: 2.2).

Overrides --input-alpha.

--input-alpha=<red[:green[:blue]]>

Set alpha for piecewise parametric curve (default: 0.0).

--output-gamma=<1.0|1.7|2.2>

Specify screen gamma (default: 2.2).

--brightness=<red[:green[:blue]]>

Set lift (default: 0.0).

--contrast=<red[:green[:blue]]>

Set gain (default: 1.0).

• --contrast=.811065673828125:.8790390491485595703125:1. D93 to D65, gamma 2.2.
• --contrast=1.:.92267322540283203125:.811065673828125 D65 to D93, gamma 2.2.

--volume=<left[:right]>

Set audio gain (default: 0.75).

Note: GCVideo-DVI v2.4b and earlier reduces volume down to a quarter of this value.

--sound=<[mono|stereo][,digital|analog|original]>

Set sound mode. The default is the Sound Mode system setting (mono or stereo).

mono:	Mono downmix
stereo:	Stereo

Note: GCVideo-Lite has swapped audio channels.

digital

Use PWM decoder.

analog[=<a0:a1:a2:b1:b2>]

Use 2MHz biquad filter (default). Defaults to a second-order low-pass filter with a cut-off of 10kHz and a quality factor of √2 if not specified.

This is used to simulate the RLC circuit on the Game Boy Advance's Headphone Jack, providing a treble boost.

original

Use low-pass filter similar to the Game Boy Player Start-up Disc.

--format=<ntsc|pal|pal-m|ntsc-50|pal-60|custom|custom-m|hd60|hd50|hd48|hdcustom>

Set video format. The default is the Video Mode and 60Hz Mode system setting (ntsc, pal or pal-60, pal-m).

ntsc:	NTSC-J
pal:	PAL-B/G/D/K/I
pal-m:	PAL-M
ntsc-50:	NTSC-50
pal-60:	PAL-60
hd60:	HDTV (60Hz)
hd50:	HDTV (50Hz)
hd48:	HDTV (48Hz)

Note: GCVideo-DVI is only designed to support NTSC-J, PAL-B/G/D/K/I and PAL-60.
AVE N-DOL can only output CVBS or Y/C as NTSC-J, PAL-M or NTSC-50.
AVE P-DOL can only output CVBS as PAL-B/G/D/K/I or PAL-60.

--scan-mode=<[interlace|quasi-interlace|non-interlace|non-progressive|progressive][,clock2x|no-clock2x][,size2x|no-size2x]>

Set scan mode. The default is the Progressive Scan Mode system setting (interlace or progressive).

interlace:	15 or 18-22kHz interlaced (480i@60Hz; 576i@50Hz; 720i@48-60Hz), deflickering
quasi-interlace:	15 or 18-22kHz segmented frame (480sf@30Hz; 576sf@25Hz; 720sf@24-30Hz)
non-interlace:	15 or 18-22kHz progressive (240p@60Hz; 288p@50Hz; 360p@48-60Hz)
non-progressive:	31 or 27-33kHz interlaced (960i@60Hz; 1152i@50Hz; 1080i@48-60Hz), field rendering
progressive:	31 or 27-33kHz progressive (480p@60Hz; 576p@50Hz; 540p@48-60Hz)

clock2x, no-clock2x

Enable 27MHz pixel clock (default: auto). Enabling doubles the refresh rate for interlace scan modes. Disabling halves the refresh rate for progressive scan modes.

This depend on a compatible video encoder or transmitter not mangling its input.

size2x, no-size2x

Enable 2× video oversampling (default: auto). Enabling halves the refresh rate.
If the video format's horizontal resolution is less or equal to 682, the internal resolution is doubled instead.

This depend on a compatible video encoder or transmitter not mangling its input.

--osd, --no-osd

Show on-screen display (default: yes).

--ipv4-address=<aaa.bbb.ccc.ddd>

Set static IPv4 address.

--ipv4-gateway=<aaa.bbb.ccc.ddd>

Set static IPv4 gateway.

--ipv4-netmask=<aaa.bbb.ccc.ddd>

Set static IPv4 netmask.

--network, --no-network

Enable Broadband Adapter features (default: yes).

--stream[=<aaa.bbb.ccc.ddd>], --no-stream

Stream video to IP address on UDP port 1234 (default: no). Defaults to 255.255.255.255 if not specified.

--enhance, --no-enhance

Enable Game Boy Player enhancements (default: yes).

Title	Feature(s)
Drill Dozer	Rumble
Game Boy Advance Video Series	Not compatible
Mario & Luigi: Superstar Saga	Rumble, reduced contrast
Pokémon Pinball: Ruby & Sapphire	Rumble
Shikakui Atama o Maru Kusuru Advance: Kanji Keisanhen	Rumble, restored contrast
Shikakui Atama o Maru Kusuru Advance: Kokugo Sansuu Shakai Rikahen	Rumble, restored contrast
Super Mario Advance 4: Super Mario Bros. 3	Rumble, restored gamma

Note: Remove any accessory from the External Extension Connector, or the Rumble Feature will not work.
If you're using an EverDrive-GBA, make sure to turn off Quick Boot in the options, or the enhancements may not work.

<path>

Load Game Boy Advance multi-bootable ROM.

Note: Remove any accessory from the External Extension Connector, or the program will not load.
The e-Reader need to be pulled out slightly from the Game Pak Slot for a program to be loaded and interact with the e-Reader.

Any file path can be relative or absolute. The working directory is the first, non-empty GBI/ directory found in Memory Card Slot A, Memory Card Slot B, Serial Port 2, or GC Loader. The device can be specified with the prefix carda:, cardb:, sd:, or dvd:.

Comparisons

Audio quality

Main article: Audio quality tests

Video quality (480i/p)

These results will differ from the speedrunning edition and high-fidelity edition.
These results are applicable to Nintendo GameCube software.

Using SSIMULACRA, DSSIM 3.1.0, and FFmpeg 4.4 for SSIM & PSNR, with this reference image.

The analog-to-digital conversion parameters were calibrated for each source and device pair when possible.
This isn't representative of relative signal strength. Sorting by SSIMULACRA provide a fairly accurate ranking.

If you'd like to see additional data or more products tested, please support the author on Patreon.

Blackmagic Intensity Shuttle

Using ADV7180 and ADV7604.

This 10-bit YC_BC_R 4:2:2 capture device is most representative of what you might see on a digital television.
As chroma is shifted right on YP_BP_R in/out, this was corrected in post-processing. Video and S-Video in/out suffer from internal interference.

• 
  Nintendo Stereo AV Cable (NTSC-J)
• 
  Nintendo Stereo AV Cable (PAL-M)
• 
  Generic S-Video Cable (NTSC-J)
• 
  Generic S-Video Cable (PAL-M)
• 
  HD Retrovision SNES Component Cable
• 
  Bitfunx/Kaico GameCube Component Cable & Retro-Bit Retro Prism Component Cable
• 
  EON GCHD Mk-II + Datel Wii HD Component Cable
• 
  EON GCHD Mk-II + HD Retrovision Wii Component Cable
• 
  EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable
• 
  EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable
• 
  GCVideo-DVI v3.0 and later + Portta HDMI to YPbPr Converter
• 
  Insurrection Industries Carby Component Cable
• 
  Nintendo GameCube Component Video Cable
• 
  GCVideo-DVI v2.4a and earlier
• 
  GCVideo-DVI v2.4b and later
• 
  EON GCHD Mk-II v2.4c.2 + HDMI Cable
• 
  Insurrection Industries CARBY v2.4d-2
• 
  GCVideo-DVI v3.0 and later

Measurements in dB (Relaxed)

	Source	SSIMULACRA	L*a*b* DSSIM	R’G’B’ SSIM	R’G’B’ PSNR
CVBS	Nintendo Stereo AV Cable (NTSC-J)	-9.726527	-18.747020	9.256430	27.179112
CVBS	Nintendo Stereo AV Cable (PAL-M)	-9.566718	-18.699702	9.391234	27.190813
Y/C	Generic S-Video Cable (NTSC-J)	-10.675784	-21.464663	9.492719	28.371121
Y/C	Generic S-Video Cable (PAL-M)	-9.977233	-20.677563	9.293635	28.016600
RGBCVS	HD Retrovision SNES Component Cable	-12.992858	-24.761779	12.239700	31.080853
YPBPR	Bitfunx/Kaico GameCube Component Cable & Retro-Bit Retro Prism Component Cable	-14.145783	-25.457662	12.790217	30.671696
YPBPR	EON GCHD Mk-II + Datel Wii HD Component Cable	-13.924262	-26.205711	13.287309	32.301984
YPBPR	EON GCHD Mk-II + HD Retrovision Wii Component Cable	-14.129946	-26.792870	13.301181	32.196883
YPBPR	EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable	-14.631527	-27.010652	13.264202	32.449360
YPBPR	EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable	-14.889863	-27.976178	13.339042	32.535513
YPBPR	GCVideo-DVI v3.0 and later + Portta HDMI to YPbPr Converter	-14.587546	-27.669035	13.436725	32.544899
YPBPR	Insurrection Industries Carby Component Cable	-12.032100	-21.846032	13.588776	29.246601
YPBPR	Nintendo GameCube Component Video Cable	-14.333400	-26.539714	13.705376	31.801082
TMDS	GCVideo-DVI v2.4a and earlier	-11.450319	-19.121199	15.108654	28.342101
TMDS	GCVideo-DVI v2.4b and later	-12.594947	-19.225548	15.699804	28.384937
TMDS	EON GCHD Mk-II v2.4c.2 + HDMI Cable	-11.667538	-20.030646	14.822928	28.129669
TMDS	Insurrection Industries CARBY v2.4d-2	-12.748220	-20.570410	15.879609	29.273666
TMDS	GCVideo-DVI v3.0 and later	-16.502891	-31.345481	18.272583	34.386203

Measurements in dB (Strict)

	Source	SSIMULACRA	L*a*b* DSSIM	R’G’B’ SSIM	R’G’B’ PSNR
CVBS	Nintendo Stereo AV Cable (NTSC-J)	-9.726527	-18.747020	9.256430	27.179112
CVBS	Nintendo Stereo AV Cable (PAL-M)	-9.566718	-18.699702	9.391234	27.190813
Y/C	Generic S-Video Cable (NTSC-J)	-10.675784	-21.464663	9.492719	28.371121
Y/C	Generic S-Video Cable (PAL-M)	-9.977233	-20.677563	9.293635	28.016600
RGBCVS	HD Retrovision SNES Component Cable	-12.992858	-24.761779	12.239700	31.080853
YPBPR	Bitfunx/Kaico GameCube Component Cable & Retro-Bit Retro Prism Component Cable	-14.145783	-25.457662	12.790217	30.671696
YPBPR	EON GCHD Mk-II + Datel Wii HD Component Cable	-13.924262	-26.205711	13.287309	32.301984
YPBPR	EON GCHD Mk-II + HD Retrovision Wii Component Cable	-14.129946	-26.792870	13.301181	32.196883
YPBPR	EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable	-14.631527	-27.010652	13.264202	32.449360
YPBPR	EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable	-14.889863	-27.976178	13.339042	32.535513
YPBPR	GCVideo-DVI v3.0 and later + Portta HDMI to YPbPr Converter	-14.587546	-27.669035	13.436725	32.544899
YPBPR	Insurrection Industries Carby Component Cable	-7.883797	-15.468387	11.533063	23.198393
YPBPR	Nintendo GameCube Component Video Cable	-14.333400	-26.539714	13.705376	31.801082
TMDS	GCVideo-DVI v2.4a and earlier	-7.124078	-12.232363	11.353717	20.189821
TMDS	GCVideo-DVI v2.4b and later	-7.190603	-12.309601	11.617077	20.199762
TMDS	EON GCHD Mk-II v2.4c.2 + HDMI Cable	-9.670852	-17.577356	13.248322	24.807061
TMDS	Insurrection Industries CARBY v2.4d-2	-12.748220	-20.570410	15.879609	29.273666
TMDS	GCVideo-DVI v3.0 and later	-16.502891	-31.345481	18.272583	34.386203

"Can't Link"

Using MS2109.

• 
  GCVideo-DVI v3.0 and later (MJPG)
• 
  GCVideo-DVI v3.0 and later (YUY2)

Measurements in dB

	Source	SSIMULACRA	L*a*b* DSSIM	R’G’B’ SSIM	R’G’B’ PSNR
TMDS	GCVideo-DVI v3.0 and later (MJPG)	-11.966349	-23.470845	12.364231	30.652442
TMDS	GCVideo-DVI v3.0 and later (YUY2)	-12.360854	-23.447447	12.431382	30.513123

Datapath VisionRGB

Using AD9887A.

This range of 8-bit RGB 4:4:4 capture cards serve as our reference.

• 
  HD Retrovision SNES Component Cable
• 
  EON GCHD Mk-II + Datel Wii HD Component Cable + [RetroRGB Comp2DVI v2.1]
• 
  EON GCHD Mk-II + HD Retrovision Wii Component Cable + [RetroRGB Comp2DVI v2.1]
• 
  EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable + [RetroRGB Comp2DVI v2.1]
• 
  EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable + [RetroRGB Comp2DVI v2.1]
• 
  Nintendo GameCube Component Video Cable + [RetroRGB Comp2DVI v2.1]
• 
  GCVideo-DVI v2.4a and earlier
• 
  GCVideo-DVI v2.4b and later
• 
  EON GCHD Mk-II v2.4c.2 + HDMI Cable
• 
  Insurrection Industries CARBY v2.4d-2
• 
  GCVideo-DVI v3.0 and later

Measurements in dB (Relaxed)

	Source	SSIMULACRA	L*a*b* DSSIM	R’G’B’ SSIM	R’G’B’ PSNR
RGBCVS	HD Retrovision SNES Component Cable	-12.971557	-25.352464	13.510929	30.738094
YPBPR	EON GCHD Mk-II + Datel Wii HD Component Cable	-15.355936	-30.097211	13.236957	33.465374
YPBPR	EON GCHD Mk-II + HD Retrovision Wii Component Cable	-14.581766	-30.249407	10.484253	33.354349
YPBPR	EON GCHD Mk-II + Datel Wii HD Component Cable + RetroRGB Comp2DVI v2.1	-16.228996	-31.290297	15.782955	34.134819
YPBPR	EON GCHD Mk-II + HD Retrovision Wii Component Cable + RetroRGB Comp2DVI v2.1	-16.290370	-31.401637	15.794001	34.127733
YPBPR	EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable	-14.705211	-28.305000	12.625978	30.532523
YPBPR	EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable	-14.103326	-29.287722	10.469803	30.526897
YPBPR	EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable + RetroRGB Comp2DVI v2.1	-15.223541	-29.484078	15.251034	30.902236
YPBPR	EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable + RetroRGB Comp2DVI v2.1	-15.224351	-29.596937	15.276839	30.980456
YPBPR	Nintendo GameCube Component Video Cable	-14.834954	-28.775490	14.937377	30.652260
YPBPR	Nintendo GameCube Component Video Cable + RetroRGB Comp2DVI v2.1	-15.005000	-29.100093	14.987160	30.847801
TMDS	GCVideo-DVI v2.4a and earlier	-11.796143	-19.234142	16.843028	28.363866
TMDS	GCVideo-DVI v2.4b and later	-13.297143	-19.361972	17.749506	28.407433
TMDS	EON GCHD Mk-II v2.4c.2 + HDMI Cable	-12.038218	-20.583611	16.037946	28.020205
TMDS	Insurrection Industries CARBY v2.4d-2	-13.464538	-21.025041	17.973462	29.308984
TMDS	GCVideo-DVI v3.0 and later	-17.050897	-31.250237	19.185697	34.340843

Measurements in dB (Strict)

	Source	SSIMULACRA	L*a*b* DSSIM	R’G’B’ SSIM	R’G’B’ PSNR
RGBCVS	HD Retrovision SNES Component Cable	-12.971557	-25.352464	13.510929	30.738094
YPBPR	EON GCHD Mk-II + Datel Wii HD Component Cable	-15.355936	-30.097211	13.236957	33.465374
YPBPR	EON GCHD Mk-II + HD Retrovision Wii Component Cable	-14.581766	-30.249407	10.484253	33.354349
YPBPR	EON GCHD Mk-II + Datel Wii HD Component Cable + RetroRGB Comp2DVI v2.1	-16.228996	-31.290297	15.782955	34.134819
YPBPR	EON GCHD Mk-II + HD Retrovision Wii Component Cable + RetroRGB Comp2DVI v2.1	-16.290370	-31.401637	15.794001	34.127733
YPBPR	EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable	-14.705211	-28.305000	12.625978	30.532523
YPBPR	EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable	-14.103326	-29.287722	10.469803	30.526897
YPBPR	EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable + RetroRGB Comp2DVI v2.1	-15.223541	-29.484078	15.251034	30.902236
YPBPR	EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable + RetroRGB Comp2DVI v2.1	-15.224351	-29.596937	15.276839	30.980456
YPBPR	Nintendo GameCube Component Video Cable	-14.834954	-28.775490	14.937377	30.652260
YPBPR	Nintendo GameCube Component Video Cable + RetroRGB Comp2DVI v2.1	-15.005000	-29.100093	14.987160	30.847801
TMDS	GCVideo-DVI v2.4a and earlier	-7.240816	-12.293288	11.740600	20.152853
TMDS	GCVideo-DVI v2.4b and later	-7.304778	-12.396954	12.005857	20.172236
TMDS	EON GCHD Mk-II v2.4c.2 + HDMI Cable	-9.728479	-17.839070	13.690033	24.334919
TMDS	Insurrection Industries CARBY v2.4d-2	-13.464538	-21.025041	17.973462	29.308984
TMDS	GCVideo-DVI v3.0 and later	-17.050897	-31.250237	19.185697	34.340843

Hyperkin 3-in-1 HDTV Cable

• 
  Nintendo GameCube (NTSC-J)
• 
  Nintendo GameCube (PAL-M)

Measurements in dB

	Source	SSIMULACRA	L*a*b* DSSIM	R’G’B’ SSIM	R’G’B’ PSNR
Y/C	Nintendo GameCube (NTSC-J)	Not a Number	Not a Number	Not a Number	Not a Number
Y/C	Nintendo GameCube (PAL-M)	Not a Number	Not a Number	Not a Number	Not a Number

Video quality (1080i)

These results will differ from the high-fidelity edition.
These results are applicable to Nintendo GameCube software.

Using SSIMULACRA, DSSIM 3.1.0, and FFmpeg 4.4 for SSIM & PSNR, with this reference image.

The analog-to-digital conversion parameters were calibrated for each source and device pair when possible.
This isn't representative of relative signal strength. Sorting by SSIMULACRA provide a fairly accurate ranking.

If you'd like to see additional data or more products tested, please support the author on Patreon.

Blackmagic Intensity Shuttle

Using ADV7604.

This 10-bit YC_BC_R 4:2:2 capture device is most representative of what you might see on a digital television.
As chroma is shifted right on YP_BP_R in/out, this was corrected in post-processing.

• 
  Bitfunx/Kaico GameCube Component Cable & Retro-Bit Retro Prism Component Cable + [RetroRGB Comp2DVI v2.1]
• 
  EON GCHD Mk-II + Datel Wii HD Component Cable
• 
  EON GCHD Mk-II + HD Retrovision Wii Component Cable
• 
  EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable + [RetroRGB Comp2DVI v2.1]
• 
  EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable + [RetroRGB Comp2DVI v2.1]
• 
  Insurrection Industries Carby Component Cable + [RetroRGB Comp2DVI v2.1]
• 
  Nintendo GameCube Component Video Cable + [RetroRGB Comp2DVI v2.1]

Measurements in dB

	Source	SSIMULACRA	L*a*b* DSSIM	R’G’B’ SSIM	R’G’B’ PSNR
YPBPR	Bitfunx/Kaico GameCube Component Cable & Retro-Bit Retro Prism Component Cable	-10.562338	-16.519452	11.296646	26.094244
YPBPR	Bitfunx/Kaico GameCube Component Cable & Retro-Bit Retro Prism Component Cable + RetroRGB Comp2DVI v2.1	-10.591979	-16.808270	11.140812	26.283996
YPBPR	EON GCHD Mk-II + Datel Wii HD Component Cable	-10.554942	-19.027983	10.258374	28.309715
YPBPR	EON GCHD Mk-II + HD Retrovision Wii Component Cable	-10.356119	-19.196248	9.546469	28.350319
YPBPR	EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable	-11.343158	-23.822682	11.008278	31.618949
YPBPR	EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable	-11.862850	-24.961333	9.790347	31.986043
YPBPR	EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable + RetroRGB Comp2DVI v2.1	-11.588361	-23.760750	12.066312	31.527673
YPBPR	EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable + RetroRGB Comp2DVI v2.1	-11.690021	-24.030941	12.144953	31.842823
YPBPR	Insurrection Industries Carby Component Cable	-12.959589	-21.659280	12.100773	30.165045
YPBPR	Insurrection Industries Carby Component Cable + RetroRGB Comp2DVI v2.1	-11.625305	-20.395545	12.162758	29.181873
YPBPR	Nintendo GameCube Component Video Cable	-11.357720	-23.620230	12.568059	31.572464
YPBPR	Nintendo GameCube Component Video Cable + RetroRGB Comp2DVI v2.1	-11.402058	-23.463230	12.534123	31.544060

Datapath VisionRGB

Using AD9887A.

This range of 8-bit RGB 4:4:4 capture cards serve as our reference.

• 
  EON GCHD Mk-II + Datel Wii HD Component Cable
• 
  EON GCHD Mk-II + HD Retrovision Wii Component Cable
• 
  EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable + [RetroRGB Comp2DVI v2.1]
• 
  EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable + [RetroRGB Comp2DVI v2.1]
• 
  Nintendo GameCube Component Video Cable + [RetroRGB Comp2DVI v2.1]
• 
  Insurrection Industries CARBY + Manhattan HDMI to VGA Converter
• 
  Insurrection Industries CARBY v2.4c + Manhattan HDMI to VGA Converter
• 
  EON GCHD Mk-II v2.4c.2 + Manhattan HDMI to VGA Converter
• 
  Insurrection Industries CARBY v2.4d-2 + Manhattan HDMI to VGA Converter

Measurements in dB

	Source	SSIMULACRA	L*a*b* DSSIM	R’G’B’ SSIM	R’G’B’ PSNR
YPBPR	EON GCHD Mk-II + Datel Wii HD Component Cable	-10.322859	-18.646785	10.129776	27.931187
YPBPR	EON GCHD Mk-II + HD Retrovision Wii Component Cable	-10.466811	-18.735391	9.607486	27.913698
YPBPR	EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable	-11.496713	-23.244762	11.553992	31.009392
YPBPR	EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable	-13.005642	-24.574501	9.703189	31.506822
YPBPR	EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable + RetroRGB Comp2DVI v2.1	-12.028545	-23.709203	13.045432	31.675253
YPBPR	EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable + RetroRGB Comp2DVI v2.1	-12.631127	-24.231499	13.167905	32.402539
YPBPR	Nintendo GameCube Component Video Cable	-11.664039	-23.476772	13.731947	31.739733
YPBPR	Nintendo GameCube Component Video Cable + RetroRGB Comp2DVI v2.1	-11.632766	-23.341270	13.677773	31.660578
RGBHV	Insurrection Industries CARBY + Manhattan HDMI to VGA Converter	-10.645002	-19.194704	13.051432	28.395561
RGBHV	Insurrection Industries CARBY v2.4c + Manhattan HDMI to VGA Converter	-10.818690	-18.692013	12.804101	28.324521
RGBHV	EON GCHD Mk-II v2.4c.2 + Manhattan HDMI to VGA Converter	-13.892636	-24.135724	14.557945	33.042360
RGBHV	Insurrection Industries CARBY v2.4d-2 + Manhattan HDMI to VGA Converter	-12.244321	-23.223611	13.800961	31.759930

Portta YPbPr to HDMI Converter

Using MS9282.

• 
  Bitfunx/Kaico GameCube Component Cable & Retro-Bit Retro Prism Component Cable
• 
  EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable
• 
  EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable
• 
  Insurrection Industries Carby Component Cable
• 
  Nintendo GameCube Component Video Cable

Measurements in dB

	Source	SSIMULACRA	L*a*b* DSSIM	R’G’B’ SSIM	R’G’B’ PSNR
YPBPR	Bitfunx/Kaico GameCube Component Cable & Retro-Bit Retro Prism Component Cable	-8.100230	-15.864391	5.183427	18.017007
YPBPR	EON GCHD Mk-II v2.4c.2 + Datel Wii HD Component Cable	-9.352855	-22.049838	5.973453	22.327374
YPBPR	EON GCHD Mk-II v2.4c.2 + HD Retrovision Wii Component Cable	-9.428943	-22.792806	5.597064	22.516222
YPBPR	Insurrection Industries Carby Component Cable	-8.962990	-21.127071	6.627177	23.008643
YPBPR	Nintendo GameCube Component Video Cable	-9.628263	-22.573851	6.846843	23.309480

Sound emulation

Mega Man Zero 2

• Digital
• Game Boy Advance
• Game Boy Player Start-up Disc

Pokémon Sapphire

• Digital
• Game Boy Advance
• Game Boy Player Start-up Disc

Image doubling

Pokémon Sapphire

• 
  None
• 
  Scale2×Ex
• 
  Scale2×Plus
• 
  Scale2×
• 
  Eagle2×
• 
  Scan2×
• 
  Normal2×

Color matrix

Golden Sun

• 
  Identity matrix
• 
  Gambatte / higan / ares
• 
  Game Boy Advance / Game Boy Color
• 
  Game Boy Advance SP (AGS-101)
• 
  Game Boy Interface
• 
  higan / ares
• 
  Nintendo DS
• 
  Palm Treo 700p
• 
  PlayStation Portable
• 
  Gameboy Hi-Colour Convertor / VisualBoyAdvance-M

Mario Kart: Super Circuit

• 
  Identity matrix
• 
  Gambatte / higan / ares
• 
  Game Boy Advance / Game Boy Color
• 
  Game Boy Advance SP (AGS-101)
• 
  Game Boy Interface
• 
  higan / ares
• 
  Nintendo DS
• 
  Palm Treo 700p
• 
  PlayStation Portable
• 
  Gameboy Hi-Colour Convertor / VisualBoyAdvance-M

Pokémon Sapphire

• 
  Identity matrix
• 
  Gambatte / higan / ares
• 
  Game Boy Advance / Game Boy Color
• 
  Game Boy Advance SP (AGS-101)
• 
  Game Boy Interface
• 
  higan / ares
• 
  Nintendo DS
• 
  Palm Treo 700p
• 
  PlayStation Portable
• 
  Gameboy Hi-Colour Convertor / VisualBoyAdvance-M

The Legend of Zelda: The Minish Cap

• 
  Identity matrix
• 
  Gambatte / higan / ares
• 
  Game Boy Advance / Game Boy Color
• 
  Game Boy Advance SP (AGS-101)
• 
  Game Boy Interface
• 
  higan / ares
• 
  Nintendo DS
• 
  Palm Treo 700p
• 
  PlayStation Portable
• 
  Gameboy Hi-Colour Convertor / VisualBoyAdvance-M

Wario Land 4

• 
  Identity matrix
• 
  Gambatte / higan / ares
• 
  Game Boy Advance / Game Boy Color
• 
  Game Boy Advance SP (AGS-101)
• 
  Game Boy Interface
• 
  higan / ares
• 
  Nintendo DS
• 
  Palm Treo 700p
• 
  PlayStation Portable
• 
  Gameboy Hi-Colour Convertor / VisualBoyAdvance-M

Examples

Color emulation

Game Boy Advance

Using a contrast ratio of 250:1.

--matrix=gba
--input-gamma=4.
--brightness=.25148668593658708166355310093177
--contrast=.74851331406341291833644689906823

Game Boy Advance SP (AGS-101)

Using a contrast ratio of 600:1.

--matrix=gbasp
--input-gamma=2.2
--brightness=.05460142499154923424989090729934
--contrast=.94539857500845076575010909270066

Game Boy Color

Using a contrast ratio of 75:1.

--matrix=gbc
--input-gamma=2.2
--brightness=.14050747383584267109301027880364
--contrast=.85949252616415732890698972119636

Nintendo DS

Using a contrast ratio of 600:1.

--matrix=nds
--input-gamma=2.2
--brightness=.05460142499154923424989090729934
--contrast=.94539857500845076575010909270066

Palm Treo 700p

Using a contrast ratio of 75:1.

--matrix=palm
--input-gamma=2.2
--brightness=.14050747383584267109301027880364
--contrast=.85949252616415732890698972119636

PlayStation Portable

Using a contrast ratio of 750:1.

--matrix=psp
--input-gamma=2.2
--brightness=.04933486807278596181719235613556
--contrast=.95066513192721403818280764386444

Color restoration

Mario & Luigi: Superstar Saga

This game reduces contrast when played with Game Boy Player enhancements.

--contrast=1.1

Super Mario Bros. 3: Super Mario Advance 4

This game reduces gamma when played without Game Boy Player enhancements.

--input-gamma=2.8

The Legend of Zelda: Oracle of Ages/Seasons

This game reduces gamma when played on a Game Boy Advance. Due to Game Boy Color limitations, only shadows can be restored perfectly.

--input-gamma=4.

Mimicking

Game Boy Player Start-up Disc

Included as gbi.cli.example. Transcribed below for reference.

--aspect=4:3
--overlay=frame-srgb.tpl.gz
--dither=none
--profile=srgb
--contrast=.78125
--sound=original
--no-osd

Wii U Virtual Console

--aspect=16:9
--zoom=3
--zoom-auto=1.
--zoom-step=0.
--no-overlay
--filter=none
--dither=none
--profile=srgb
--contrast=.75
--sound=digital
--no-osd
--no-enhance

Video optimization

Datapath VisionAV & VisionRGB

GCVideo-DVI v3.0 and later

These settings provide a 2× scaled image in a 4:3 960×360p60 video output.

In the GCVideo menu under "Other settings", set "Enhanced DVI mode" to On.
In the GCVideo menu under "Advanced settings", set "Chroma Interpolation" to On, "Fix resolution" to Off, and "Digital color format" to YC444.

--aspect=4:3
--offset=0
--zoom=3
--zoom-step=0.
--no-overlay
--filter=prescale
--dither=bayer2x2
--scaler=nearest
--format=hd60
--scan-mode=non-interlace,clock2x,size2x

• Color Adjustments
  • Brightness: 32
  • Contrast: 128
  • Colour Domain: YUV (601) Limited

Datapath VisionRGB

Nintendo GameCube Component Video Cable

These settings provide a 2× scaled image in a 4:3 360p60 (27MHz÷1200÷375) video output.

--aspect=4:3
--offset=0
--zoom=3
--zoom-step=0.
--no-overlay
--filter=prescale
--dither=bayer2x2
--scaler=nearest
--format=hd60
--scan-mode=non-interlace,clock2x,size2x

• Resolution and Refresh
  • Width: 960
  • Height: 360
  • Vertical Refresh: 60.00
• Video Adjustments
  • Horizontal Position: 205
  • Horizontal Size: 1200
  • Phase: 31
  • Vertical Position: 13
  • Black Level: 8
• Cropping
  • Top: 20
  • Left: 0
  • Width: 960
  • Height: 320
• Color Adjustments
  • Brightness: 32
  • Contrast: 128
  • Colour Domain: YUV (601)
  • Colour Balance
    • All Colors
      • Brightness: 32
      • Contrast: 128
    • Red
      • Brightness: 159
      • Contrast: 159
    • Green
      • Brightness: 178
      • Contrast: 160
    • Blue
      • Brightness: 152
      • Contrast: 144

Open Source Scan Converter

These settings provide a 2× scaled image in a 4:3 360p60 (27MHz÷1200÷375) video output. They require firmware v0.82 or later.

Included as gbi-ossc.cli, gbi-ossc.dol+cli and gbi-ossc.gci. Transcribed below for reference.

--aspect=4:3
--offset=0
--zoom=3
--zoom-step=0.
--no-overlay
--format=hd60
--scan-mode=non-interlace,clock2x,size2x

RetroTINK-5X Pro

Insurrection Industries Carby Component Cable

These settings provide a 3× scaled image in a 3:2 480p59.94 (27MHz÷858÷525) video output. They require firmware v1.29 or later.

Included as gbi-rt5x+carby.cli, gbi-rt5x+carby.dol+cli and gbi-rt5x+carby.gci. Transcribed below for reference.

--aspect=3:2
--offset=0
--zoom=3
--zoom-step=1.
--no-overlay
--filter=prescale
--dither=bayer2x2
--scaler=nearest
--format=ntsc
--scan-mode=progressive

Important: Misuse will result in the wrong aspect ratio. These settings are mutually exclusive with a secondary display.

In the RT5X menu, set "Output Res." to 1080p (UNDER), "H. Sampling" to Generic 4:3, "Interpolation" to Sharp, "Vertical Sync" to Frame Lock, and "Video LPF" to EDTV Light.

Computer monitors (Liquid-crystal display)

These settings provide a 3× scaled image in a 4:3 720×540p59.7546 video output. Due to the tight video timings, digital audio cannot be embedded.

In the GCVideo menu under "Other settings", set "Enhanced DVI mode" to Off.
In the GCVideo menu under "Advanced settings", set "Chroma Interpolation" to On.

--aspect=4:3
--offset=0
--zoom=3
--zoom-step=1.
--no-overlay
--filter=prescale
--dither=bayer2x2
--scaler=nearest
--format=hdcustom
--scan-mode=progressive

High-definition televisions

Nintendo GameCube Component Video Cable

These settings provide a 2.75× scaled image, line doubled in a 16:9 1080i60 (27MHz÷800÷1125) video output.

--aspect=11:6
--offset=0
--zoom=2.75
--zoom-step=0.
--format=hd60
--scan-mode=non-progressive

Change the Aspect Ratio on the television to Just Scan.

GCVideo-DVI v2.4d and earlier

These settings provide a 3× (Game Boy Advance) or 3.3× (Game Boy Color) scaled image, line doubled in a 16:9 720×960i59.9972 video output.

--aspect=16:9
--offset=+4:-2
--zoom=3
--zoom-auto=1.
--format=ntsc
--scan-mode=non-progressive

Change the Aspect Ratio on the television to 16:9.

To improve the picture further, in the GCVideo menu under "Other settings", try setting "Enhanced DVI mode" to Off. You will lose embedded digital audio.

Labeling the input on the television as a PC may also work.

---

These settings provide a 2.85× (Game Boy Advance) or 3.16× (Game Boy Color) scaled image in a 16:9 720×480p59.94 video output.

--aspect=16:9
--offset=+4
--zoom=3
--zoom-auto=.95
--format=ntsc
--scan-mode=progressive

Change the Aspect Ratio on the television to 16:9.

GCVideo-DVI v3.0 and later

These settings provide a 4× scaled image in a 16:9 960×720i60.08 video output.

In the GCVideo menu under "Other settings", set "Enhanced DVI mode" to On.
In the GCVideo menu under "Advanced settings", set "Digital color format" to YC422.

Included as gbi-direct-hdmi.cli, gbi-direct-hdmi.dol+cli and gbi-direct-hdmi.gci. Transcribed below for reference.

--aspect=16:9
--offset=0
--zoom=3
--format=hd60
--scan-mode=interlace,clock2x,size2x

Change the Aspect Ratio on the television to 16:9. If the output isn't compatible, use the default settings.

---

These settings provide a 4× scaled image in a 4:3 960×720i60.08 video output.

In the GCVideo menu under "Other settings", set "Enhanced DVI mode" to On.
In the GCVideo menu under "Advanced settings", set "Digital color format" to YC422.

--aspect=4:3
--offset=0
--zoom=3
--no-overlay
--format=hd60
--scan-mode=interlace,clock2x,size2x

Change the Aspect Ratio on the television to 4:3. If the correct aspect ratio cannot be realized, or the output isn't compatible, consider other options.

---

These settings provide a 3× scaled image in a 4:3 720×540p59.7546 video output. Due to the tight video timings, digital audio cannot be embedded.

In the GCVideo menu under "Other settings", set "Enhanced DVI mode" to Off.
In the GCVideo menu under "Advanced settings", set "Chroma Interpolation" to On.

--aspect=4:3
--offset=0
--zoom=3
--zoom-step=1.
--no-overlay
--filter=prescale
--dither=bayer2x2
--scaler=nearest
--format=hdcustom
--scan-mode=progressive

Change the Aspect Ratio on the television to 4:3. If the correct aspect ratio cannot be realized, or the output isn't compatible, consider other options.

Video capture devices (Game Boy Advance)

These settings provide a 3× scaled image in a 3:2 480i59.94 (13.5MHz÷858÷525) or 480p59.94 (27MHz÷858÷525) video output.

If you're using GCVideo-DVI, under "Advanced settings", set "Digital color format" to YC422.

--aspect=3:2
--offset=0
--zoom=3
--zoom-step=1.
--no-overlay
--filter=prescale
--dither=bayer2x2
--scaler=nearest
--format=ntsc

Important: Misuse will result in the wrong aspect ratio. These settings are mutually exclusive with a secondary display.

Video capture devices (Game Boy Color)

These settings provide a 4× scaled image in a 5:4 576i50 (13.5MHz÷864÷625) or 576p50 (27MHz÷864÷625) video output.

If you're using GCVideo-DVI, under "Advanced settings", set "Digital color format" to YC422.

--aspect=5:4
--offset=0
--zoom=4
--zoom-step=1.
--no-overlay
--filter=prescale
--dither=bayer2x2
--scaler=nearest
--format=pal

Important: Misuse will result in the wrong aspect ratio. These settings are mutually exclusive with a secondary display.

FAQs

Progressive scan (720x480p)

Blanking regeneration (1440x480i)
Red + Green: Regenerated blanking interval
Green + Blue: Actual blanking interval

How do I change Game Paks?

1. Hold the Reset Button.
2. Slide the Game Pak Ejector.
3. Insert a Game Pak into the Game Pak Slot.
4. Release the Reset Button.

Can I play Game Boy Advance Video?

Yes. You can do so by disabling Game Boy Player enhancements (--no-enhance, or "Rumble: No" in Swiss), or holding a direction in the Game Boy Player while the Game Boy Player logo is visible.

Is this an emulator? Can I play ROMs?

No, but there's Enhanced mGBA if you're looking for one.

Is it possible to dump Game Boy Game Paks?

No, the pin assignment for the ARM7 CPU is different and prevents any such possibility. Using the SM83 CPU is impractical.

If you're interested in backing up Game Boy Camera photos, you can do so by taking a screenshot.

Why am I seeing a double split image?

Either progressive scan mode is enabled or, if using GCVideo-DVI, line doubling is by default.

If line doubling is at fault, the picture may also be scrolling with a slant.

Why is my picture cut-off or cut-through?

This is GCVideo-DVI's blanking regeneration misbehaving with unsupported video modes. In most cases, no user action is necessary with GCVideo-DVI v3.0 and later.

If you have a GCDual or EON GCHD Mk-II, under "Other settings", set "Analog output" (Wii RGB Cable) or "Mode Select" (Wii Component Cable) to dYUV.

For standard video modes, you can disable video oversampling (--scan-mode=no-clock2x,no-size2x, or "Video Oversampling: No" in Swiss).

Why is my picture square or narrow?

By default, Game Boy Interface assume a widescreen aspect ratio when using progressive scan.

Ensure that the television's settings match the assumed aspect ratio written in the top right corner of the on-screen display.

Why is there motion blur? Can I turn it off?

It removes stuttering caused by mismatches between the Game Boy Advance and the display refresh rate. It cannot be turned off.

It can be reduced by using a 120Hz video mode, but it's most effective on a sample-and-hold display.

This can possibly be confused with the deflickering filters. These can be disabled (--filter=none, or "Filter: Sharp" in Swiss).

Why are the colors washed out?

The screens used in the Game Boy family produced a smaller gamut of colors than found in the standard RGB color space on contemporary monitors.

Developers compensated for this to varying degree, resulting in odd-looking oversaturated colors when shown as-is.

By default, Game Boy Interface adapt these colors for the standard RGB color space, but only halfway as a compromise.

A low quality conversion from analog video can also cause washed out colors, as can color range mismatches in digital video.

What happens when I exit Game Boy Interface?

The Game Boy Player keeps running and you're returned to autoexec.dol, or the Nintendo GameCube Main Menu.

If using Swiss v0.5r979 or later, its reload stub is called.

Should I force 240p?

Generally speaking, no.

If you're using GCVideo-DVI, the results between 480p and line-doubled 240p are identical at 2× zoom. At greater zoom, 240p is just plain worse.

If you have a specific need for 240p, you're likely better served by the speedrunning edition or high-fidelity edition.

Changelog

September–October, 2024

• Added PicoBoot v0.4 payload.
• Added WIZnet W5500 support.
• Added WIZnet W6100 support.
• Improved SD card compatibility and performance.
• Improved video streaming performance with WIZnet.

June–August, 2024

• Added SD2SP2 2.0 support.
• Improved SD card compatibility and performance.
• Enabled KunaiGC on exit.
• Fixed crash after a large number of resets.

May, 2024

• Added ETH2GC Sidecar+ support.
• Added SD2SP1 support.
• Updated GBA ROM checksummer.
• Improved Microchip ENC28J60 support.

November, 2023

• Added color profiles for RetroTINK-4K.
• Fixed detecting USB Gecko in Slot A.

October, 2023

• Added color rendering intent.
• Updated color matrices by Pokefan531.

July–September, 2023

• Added Microchip ENC28J60 support.
• Added Memory Expansion Pak support.
• Updated GBA ROM checksummer.
• Improved GC Loader write support.

February, 2023

• Added piecewise parametric curve.
• Fixed polling rate in various video modes.

July, 2022

• Added Gambatte and higan color profiles.
• Updated GBA ROM checksummer.
• Fixed issue with GC Loader and IPL replacements.

May–June, 2022

• Updated GBA ROM checksummer.
• Improved SD card compatibility.
• Changed reset combo to exit on hold.
• Fixed minor issues.

December, 2021

• Updated GBA-as-GC controller.

November, 2021

• Added quick color profiles.
• Updated color matrices by Pokefan531.
• Updated GBA ROM checksummer.
• Fixed issues with GC Loader.

June, 2021

• Added GC Loader 2.0.0 write support.
• Added Y Button remapping.
• Improved GBA anti-sleep mode.
• Fixed hang in AGB Aging Cartridge.

May, 2021

• Added zoom step size setting.
• Added new zoom method.
• Improved font rendering.
• Locked 240p, 288p and 360p to "integer" zoom factors.
• Fixed miscellaneous issues.

February–April, 2021

• Updated GBA-as-GC controller.
• Changed SNTP to set RTC counter instead of RTC counter bias.

January, 2021

• Added GBA ROM checksummer.
• Added all devices search for GBI directory.
• Updated GBA-as-GC controller.
• Improved GBA multiboot support.

December, 2020

• Added return to loader support.
• Updated color matrices by Pokefan531.
• Improved system stability.
• Improved SD card compatibility.
• Changed default video format to avoid PAL-M with digital AV.

May–June, 2020

• Added disc spin-down.
• Added GC Loader read-only support.
• Fixed wiiload over 100 Mbps full duplex.

April, 2020

• Fixed Game Boy Player settings validation.

January–March, 2020

• Improved SD card compatibility.
• Fixed wiiload arguments bug.
• Disabled deflickering for HD video modes.

October, 2019

• Added N64 Controller support.
• Added GBA anti-sleep mode.
• Added subfolder search for GBI directory.
• Conformed screenshots to DCF standard.

August–September, 2019

• Added Game Boy Player settings validation.
• Fixed default SD card with bad program name.

July, 2019

• Added SD2SP2 support.
• Fixed hang with no SD card inserted.
• Fixed hang upon SD card reinsertion.

June, 2019

• Improved video rendering.
• Renamed oversample scaler to area.
• Changed default scaler to area.
• Fixed 540p and 1080i.

May, 2019

• Added blend, deflicker and accumulate filters.
• Added prescaling filter setting.
• Added reset combo.

April, 2019

• Unified screen space for HD video modes.
• Fixed some video rendering bugs.
• Fixed a power issue.
• Enabled USB Gecko standard output.

March, 2019

• Updated color matrices by Pokefan531.
• Replaced 720p with 540p.
• Fixed 960i and 1152i.
• Fixed NTSC 50 composite video.

October–December, 2018

• Added HD Custom video format.
• Fixed 360p RGBcvS sync issue.

August, 2018

• Updated color matrices by Pokefan531.

July, 2018

• Updated GBA-as-GC controller.

June, 2018

• Added analog sound emulation.
• Added Custom-M video format.
• Added Custom interlaced video modes.
• Changed default sound mode to analog.
• Changed brightness/contrast controls to match BT.1886.
• Fixed some audio bugs.
• Enabled progressive scan in more cases to prevent display issues.

May, 2018

• Added 360p, 720i, 720p and 1080i video modes.
• Changed scan mode semantics.
• Changed default aspect ratio for progressive scan to 16:9.
• Fixed Game Boy Player advertisement.
• Fixed rumble protocol handshake.

April, 2018

• Added movie recording/playback.
• Updated GBA-as-GC controller.

March, 2018

• Improved multiboot implementation.
• Improved Game Boy sound quality.
• Improved audio rendering.
• Reduced audio latency.
• Changed default color matrix to GBI's original.
• Fixed SD card compatibility.
• Fixed multiboot to rumble protocol transition.

February, 2018

• Added color matrix from Gambatte.
• Added mono sound mode.
• Fixed wiiload autoboot with tiny GBA multiboot ROMs.
• Disabled machine checks.

January, 2018

• Updated color matrices by Pokefan531.
• Improved Game Boy Player driver.

September, 2017

• Added overlay scale setting.
• Added Logitech Speed Force support.
• Added Active Life Mat support.
• Improved Game Boy Player driver.
• Changed wiiload server to accept oversized DOLs.
• Fixed one random kernel crash.

August, 2017

• Added DK Bongos support.
• Updated color matrices by Pokefan531.
• Improved Game Boy Player driver.

July, 2017

• Added CLI append support.
• Updated color matrices by Pokefan531.
• Updated GBA-as-GC controller.

April, 2017

• Added component video DAC oversampling.
• Added experimental 960i and 1152i video modes.

March, 2017

• Added temporal/spatial dithering.
• Added color matrices by Pokefan531.
• Added TPL overlay support to wiiload server.
• Changed default color matrix to Pokefan531's.
• Changed default gamma to 2.2.
• Optimized NormalNx filter.

February, 2017

• Added volume control.
• Added per-channel settings where possible.
• Changed volume to 75% to mitigate clipping.
• Fixed framebuffer clearing for 576i.

November, 2016

• Updated GBA-as-GC controller.
• Optimized Scale2xEx filter.

October, 2016

• Added Scale2xEx and Scale2xPlus filters.
• Added oversample and box scalers.
• Added basic video streaming.
• Added Remote RetroPad support.
• Optimized video rendering.

September, 2016

• Added polling rate setting.

May, 2016

• Updated GBA-as-GC controller.
• Improved Game Boy Player driver.
• Fixed WaveBird Controllers.

April, 2016

• Added GBA multiboot support to wiiload server.
• Added Xboo Communicator.
• Added BIOS/ROM dumper.
• Replaced GBA-as-controller with GBA-as-GC controller.

March, 2016

• Added GBA-as-controller support.
• Recognized a half press of the analog triggers.

December, 2015

• Expanded video options. Now includes 25, 30, 100 and 120 Hz modes.
• Added gamma-encoded borders for special use.

November, 2015

• Added (GZipped) TPL overlay support.
• Added all 20 borders from the Game Boy Player Start-up Disc.

October, 2015

• Added Scale2x, Eagle2x, Scan2x and Normal2x filters.

August, 2015

• Added executable compression.
• Added return to autoexec.dol.
• Added memory card distribution files.
• Added auto-cropping for Game Boy screenshots.
• Optimized video rendering.
• Reduced coil whine.

July, 2015

• Added rumble.
• Added hold to quit.
• Added screenshot saving.
• Added SNTP broadcast listener.
• Changed default video mode to interlaced.
• Fixed Game Boy Player detection.

May, 2015

• Changed all 60 Hz modes to have 486 active lines.

March, 2015

• Added digital PWM sound.
• Added turbo button.
• Fixed 288p.