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gngb - Online in the Cloud

Run gngb in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command gngb that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


gngb - emulate various Nintendo Game Boy handheld systems

SYNOPSIS


gngb [-h] | [options] <romname>

DESCRIPTION


gngb is an emulator program that attempts to be various forms of Nintendo Game Boy
hardware. It can run the various homebrew games and demos for the system as well as
images of commercially-released games.

This manual page was written for the Debian GNU/Linux distribution because the original
program does not have a manual page.

OPTIONS


The program follows the usual GNU command line syntax, with long options starting with two
dashes (`-'). A summary of options are included below.

-h, --help
print help and exit

-a, --autoframeskip
turn on autoframeskip. This is useful if the emulator is running too slow. It
will cause the emulator to drop frames every now and then to maintain a realtime
emulation.

--sleep_idle
sleep when idle. This will cause the program to sleep when it has idle cycles
instead of busy looping. However, this can degrade emulation performance under
some circumstances.

--color_filter
turn on the color filter.

-r, --rumble
turn on the rumble simulation. This will cause the emulated screen to shake when a
rumble effect is caused by the running program.

--filter=X
Set the filter to apply. These only work when using standard (not YUV or GL) video
output. 0 = none 1 = scanline 2 = scanline 50% 3 = smooth 4 = pseudo cell shading

-R, --res=WxH
set the screen resolution to WxH (for YUV and GL mode only).

-Y, --yuv
turn YUV mode on. This utilizes the hardware YUV colorspace conversion and scaling
features if your video card supports it. Most video cards with Xv support can use
this feature for excellent performance.

--yuv_type
set the type of the YUV overlay: 0 = YV12 1 = YUY2

-o, --opengl
turn OpenGL mode on. This will render the gameboy screen as an OpenGL 3D texture,
which on some cards may perform much better than the YUV or X11 output. This
requires a 3D card with GLX support.

-f, --fullscreen
run gngb in fullscreen. Fullscreen can be toggled during use with F9.

--fps Show frames per second counter in the upper left corner of screen. May be toggled
through the emulator's menu.

-s, --sound
Enable sound.

--sample_rate=RATE
Set the sound output sample rate to RATE. (typically a multiple of 11025 Hz)

--auto_gb
Automatically detect the system to emulate based on the cartridge image that is
selected. This should work in most cases. If it fails, you can use one of the [
-C, --color_gb | -G, --normal_gb | -S, --super_gb ] options to force emulation of a
Color, Normal, or Super Game Boy.

-j, --joy_dev=N
The default joystick is /dev/js0. By setting N here, /dev/jsN will be used in its
place.

-g, --gdma_cycle
This experimental option will halt the CPU during certain DMA operations. Leave it
off unless you are working around problems in a certain program.

-v, --version
Show version of program.

Most options can be disabled whith --no-OPTION (Ex: --no-sound turn sound off)

DEFAULT BINDINGS


These are the default keys in the emulator. These, along with the joystick buttons, may
be changed through a custom gngbrc(5) file.

Enter : Start
Right Shift : Select
W : B
X : A
TAB : Open menu

F9 : fullscreen on/off
F10 : show fps
F11 : reset
F12 : show keysym code

KeyPad 1-5: Change palette
Palette must be define in your gngbrc file (see sample_gngbrc)

KeyPad 6 : Toggle color filter

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