Hey,
I managed to give this a quick try today and much to my surprise it worked in my Namco Noir without needing anything to modify the video signal with some PCB's. It was a bit of a hit and miss. Some like Snow Bros. work perfectly where as others wouldn't be detected at all. I didn't get a tri-sync helper as I didn't actually think it would work at all. I will get one now to see if it helps.
The JVS is identified as Unknown, but syncs and works. I have only had a moment to quickly try it and it seems to work with the exception of the test and coin buttons on the unit. These don't seem to do anything.
The main issue I'm having apart from the hit and miss video syncing is audio. I basically have none from 80% of the boards I tried and the ones that did work the sound was terrible. Strider 2 is the only board where the audio was usable but to get it I had to turn the volume to almost full on the board and then I get a ringing in the background.
Has anyone else had issues with the audio?
I don't believe the cabinet is the issue as it works fine with TTX2, Naomi and TvC audio outputs.
Away for the week with no computer, so I’m a little cut-off until next week - using my wife’s iPad
Nice with the video - it looks a bit too good to be a glitch. The tri-sync helper will attenuate and re-amplify the video to vga levels and
clean + separate sync into h+v sync. The signal without it is pure unmodified straight from the jamma pcb. Got a spec sheet for the monitor used?
The unknown is simply the string used to match the io, please insert an sdcard with an empty file named “jamdebug.txt” so I can get the exact string and update the firmware.
Test is a plain JVS switch like the buttons and should work, I got a visual input check thing for the pled that was not included in the currrent firmware which should help identify that. As it’s just a plain switch, try holding it in for a bit - some games like cave cv1000 require this and it’s not related to the jammafier.
If there is a credit bug, that should also be an easy fix - I don’t remember if I added debug strings for the jamdebug.txt in the current release. It is set to ignore coin problems (no coin counter, jammed coins etc) - so that may be the issue.
For sound, double check your amplifier. Most games will output distorted sound when cranked to almost max. The red/white rca is exactly the same signal, so you could try with just one to see if the amp is up to some tricks. Is the amplifier sharing ground with the power connectors?