I'm not sure if this has any negative effect if you just always select the maxium?
It's mentioned in the instructions. Setting 0 for unused special inputs will optimize performance.
Analog, rotary and screen position inputs are normal JVS functions, as are analog and character outputs. JVS Dash is exA-Arcadia's own JVS protocal that allows faster response times.
ArcadeOtaku lists capabilities of most common JVS boards:
https://wiki.arcadeotaku.com/w/JVS
A translated English version of the Jamma Video Standard can be found on trap15's site:
http://daifukkat.su/files/jvs_wip.pdf


