Posted by Brian Lewis on 8, 2000 at 1:54 PM:
In Reply to: Re: JAMMA PCBs on Computer monitors? posted by Andy Warne on 7, 2000 at 7:30 PM:
: : What specs does a monitor need to meet in order to sync low enough for a game board?
: Composite negative-going sync. (the VGA standard is seperate, positive-going)
: Horizontal freq about 25-30 Khz.
Sorry to contradict -
but 25-30 Khz is still not low enough as it's medium res.
To sync to standard/low res games (which is what every JAMMA PCB I can think of runs at)
the monitor needs to go down to around 15Khz
The other thing to look at is 'upscan converters',
which take in a low scanrate signal and output a high one.
Brian
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: Andy