|List all games that gngeo has recognized and are available to play.|
|Enable auto frameskipping. The program will determine the best frameskip value to avoid lagging the gameplay on a machine that is too slow to emulate at full speed.|
|Use the specified blitter. -b help will provide a list of available blitters. soft, opengl, and yuv are typical choices.|
|Convert graphics tiles into internal format at load time (default on).|
|Set the country code to japan, usa, or europe.|
|Enable gngeos internal debugger, for hacking, cheating, or fixing bugs.|
|Use the specified video effect. -e help will provide a list of available effects.|
|Start gngeo in fullscreen mode.|
|Use a SDL hardware surface for the emulators video. This can improve performance if your video hardware/drivers are fast.|
|Enable interpolation from one frame to the next. This can make the display look "smoother", but has a performance penalty.|
|Invert joystick order. (need more details)|
|Enable joystick support.|
|Use STRING as libGL (default should normally be okay).|
|-P, --pal||Use PAL timings. This currently has bugs.|
|Player 1 and Player 2 keyboard and joystick mappings, respectively. (need more details)|
|Enable the raster interrupt. (need more details)|
|Give the path to locate the ROM collection. The default is to look in /usr/share/gngeo, but your ROM collection is most likely not there. :)|
|Give the path to locate the romrc file. This defines the layout of the games and is required to run any Neo-Geo games.|
|--sound||Enable sound emulation.|
|When the emulator is started, show a frames-per-second count. This can be used to gauge a baseline performance for the emulation.|
|Enabling this option will cause the emulator to give up time to the system when it is idle. It can incur a performance penalty, but can also make the emulator "nicer" to the rest of the system.|
|This option allows you to set the type of the emulated system to home or arcade, depending on how you prefer to play your games. There are some differences in many games if they detect a home system instead of an arcade system.|
|Upscale the resolution by N. For example, if N is 3, the Neo-Geo output, which is normally 320x224, will become 960x448. You may encounter a mode which is not hardware accelerated when using this option.|
|Set the sound sample rate to N. N will typically be 11025, 22050, 32000, or 44100.|
|Use the specified transparency pack (need more details)|
|-h, --help||Show summary of options.|
The SNK Neo-Geo system was cartridge-based and was sold to arcades as well as homes. It has a 68000 CPU, a Z80 for sound, and custom graphics hardware, and its main claim to fame was that it has the highest megabit count of any cartridge-based system in history, allowing for detailed animation and huge sprites.
MVS, the arcade system, had mainboards which could accept up to six cartridges at once. The user could choose one of the games to play by simply moving the joystick. This allowed arcade operators to maximize the choice of games available to players without taking up floor space with more dedicated cabinets.
AES, the "Advanced Entertainment System", was the home Neo-Geo system. It sold for hundreds of dollars at launch and the cartridges generally cost around $200 a piece. However, there was no truer way for players to have the "arcade at home" experience in 1990. The joysticks were authentic arcade joysticks and the cartridges were huge. The cartridges, while shaped differently, had the exact same data stored in them as the MVS arcade cartridges. Some companies sold adapters to use MVS cartridges (which typically could be found cheaply on the used market) on the AES console.
The Neo-Geo introduced the idea of a memory card, which could be shared between the MVS and AES systems (as the hardware was essentially identical). The user could take his/her high scores and other saved data between the arcade and home.
Some later cartridges used some hardware bootleg protection that had to be first understood and then worked around. New software is still released even today for the MVS and AES systems, though SNK itself finally went bankrupt in 2001.
gngeo is fast, but still has some bugs. Visit the homepage at:
if you would like to help development or submit bug reports.
Some planned features are netplay support, better game compatibility, and better portability, as well as more i386-specific optimizations.
This manual page was written by Ryan Underwood <firstname.lastname@example.org>, for the Debian project (but may be used by others).
|-->||GNGEO (1)||June 26, 2003|