1500points
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Picked up a Nibbler board that was stated as "working"
I have a cabinet that is wired for Jamma.
--using Nibbler to Jamma adapter from Mike's arcade
--using a CGA 2VGA card
--Dell 19inch LCD
--switching PS for typical 12v, +5, and -5.
--works fine for real pcbs of Moon Patrol and Tutankham with Bob Roberts Jamma adapters so I know it's a good setup.
When turned on, the monitor says "No signal" for awhile, then I can hear some high frequency buzzing, then the nibbler screen appears for a second/grainy, it rolls vertically once then disappears. rinse and repeat.
I've tried various cga/vga card resolutions, same behavior.
Anyone ever tried a Rockola to Jamma setup or have some hints to pursue. Is there something unique about the video output for Rockola setups?
I have a real CGA monitor in an arkanoid cab. I suppose I could rig up the jamma harness to temporarily use that monitor as a test. if I have to, but I'd rather not.
Thanks in advance.
I have a cabinet that is wired for Jamma.
--using Nibbler to Jamma adapter from Mike's arcade
--using a CGA 2VGA card
--Dell 19inch LCD
--switching PS for typical 12v, +5, and -5.
--works fine for real pcbs of Moon Patrol and Tutankham with Bob Roberts Jamma adapters so I know it's a good setup.
When turned on, the monitor says "No signal" for awhile, then I can hear some high frequency buzzing, then the nibbler screen appears for a second/grainy, it rolls vertically once then disappears. rinse and repeat.
I've tried various cga/vga card resolutions, same behavior.
Anyone ever tried a Rockola to Jamma setup or have some hints to pursue. Is there something unique about the video output for Rockola setups?
I have a real CGA monitor in an arkanoid cab. I suppose I could rig up the jamma harness to temporarily use that monitor as a test. if I have to, but I'd rather not.
Thanks in advance.