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Author Topic: VGA out to CGA monitor?  (Read 1913 times)

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John Li

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VGA out to CGA monitor?
« on: July 14, 2002, 12:13:34 am »
Since a CGA monitor has the same specs as a standard monitor, would it be possible to use Mame -NTSC with a CGA monitor?
« Last Edit: December 31, 1969, 07:00:00 pm by 1026619200 »
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Dave_K.

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Re:VGA out to CGA monitor?
« Reply #1 on: July 16, 2002, 12:09:19 pm »
It is possible.  CGA monitors run a 15khz...but have digital inputs.  You have to hack the monitor board and make a connector to the analog pins just after the digital conversion circuit.

Here is a page that details how to make the hack (this is for a specific cga monitor, but the chipsets are pretty much the same on all).

http://www.arcadecollecting.com/info/Samtron_5inch_CGA_to_Arcade.txt

-Dave
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