Build Your Own Arcade Controls Forum

Main => Monitor/Video Forum => Topic started by: John Li on July 14, 2002, 12:13:34 am

Title: VGA out to CGA monitor?
Post by: John Li 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?

Title: Re:VGA out to CGA monitor?
Post by: Dave_K. 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