What's new

mathewbeall

Champion
Joined
Nov 6, 2017
Messages
1,671
Reaction score
1,197
Location
Mission Viejo, CA, USA
Hello All,

I just picked up a CPS3 multikit from Denson (Thanks Denson!) and it all works great running through a RGBS adapter.

I hook up my commodore 1084s monitor (RGB, 15khz) and it obviously doesn't sync.

Do the CPS3 boards only run at 31khz, or is there a jumper somewhere on the board to drop it down to 15khz?

And - correct me if I am wrong, but I hooked up a system246 to the same monitor and saw the same pattern - but system246 has a dip switch I can flip and drop it down to 15khz.

Thanks!

Matt
 
Have you tested any other Jamma boards if your monitor takes their RGBs?

The System 246 not only has a dip for 15/31k, but also for 0.7/3Vpp, so this might give a different sync depending how you set dip #2

Dip #2 OFF = 3.0v for 15k and ON = 0.7v
Dip #3 OFF = 15kHz and ON = 31kHz
Dip #4 OFF = RGBs (conposite sync) and ON = RGBHV (seperate sync)

For normal Jamma you want all dips as OFF
 
Last edited:
Back
Top