Build Your Own Arcade Controls Forum
Main => Software Forum => Topic started by: HaRuMaN on November 22, 2004, 09:17:09 am
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I have a question... I am using MAMEWAH with command line MAME 086. When I play on my TV using the TV out and S-Video connection, raster games look great. However, when I try to play a vector game, the game is huge, and I only can view like the upper left quadrant of the game. How do I correct this?
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Specify a resolution on the command line. Chances are MAME is asking the OS "What's the biggest resolution I can run this vector game at?" and the OS is replying "Why, it's this super huge size", which is then run as an auto-pan mode over s-video.
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ahh ok.. I just specified the resolution in an .ini file for the game. What is the resolution of a standard TV set?
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640x480 is typical (NTSC)
640x240 for non-interlaced
Horizontal resolution is a function of the pixel clock & blanking ratio. So a DVD (720x480) uses a 13.5MHz dot clock, which gives a total line of 858 pixles @ 15.7KHz. Square pixel NTSC (640x480) has 780 pixels per line or a 12.27MHz dot clock.
Note, people who use 800x600 for TVout aren't getting any additional vertical resolution. Composite will top out at 320/455x480 due to aliasing with colorburst frequency (3.57MHz)
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Thanks for the information. It is proving helpful... :)
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Got another question... my TV out won't let me output anything lower than 800x600, and it does the scrolling desktop thing. Is there any way to force it to output a lower resolution?
It's a nvidia GeForce FX card
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ahh ok..
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ahh ok.. I just specified the resolution in an .ini file for the game.
You can also make a vector.ini which will be applied to all vector games...
ahh cool, that saves me the trouble of writing a whole bunch of .ini files. Does it still go in the INI folder?