Anyone recognize this PC Engine to JAMMA adapter?

[Kujako]

Works great, but I'd like to know what the DIP/jumper settings do...

 

[Kujako]

Answering my own question: https://jammarcade.net/pc-engine-jamma-pcb/

 

[Astro X]

That's from my own adapter,
hope that helps..........

 

[Kujako]

That's from my own adapter,
hope that helps..........

DIP 3 was the main one I was looking for, to turn off the timer. But I'm still looking to figure out what the single dip switch by the controller connection is for. And I'm wondering if the unpopulated connection is just for the megadrive, or if it's for a second player (guessing it's the later as 2 player would run into issues with the timed play).

 

[Astro X]

...........the other side

 

[Kujako]

...........the other side

Thanks much, it does list two player inputs. Will have to try that out.