OSSC and Capcom CPS2 arcade boards: black screens all the time

[Gladson]

Hello, I’ve been using the OSSC for quite some time and I never really had any issues with any of the systems I throw at it.

However, started to collect some arcade PCBs lately and I noticed that the OSSC is struggling when it comes to Capcom CPS2 boards.

The arcade PCB goes to a supergun with RGB output and from there I connect it via SCART to the OSSC.

Even though I have no issues with Neo Geo MVS boards, Namco boards and Atomiswave games, most of the CPS2 games I try keep going to a black screen for some milliseconds. It’s not consistent, it happens A LOT with some games, way less with others, but as far as I remember, all 9 CPS2 games I own do behave like this one way or another. Sometimes it makes some fighting games almost impossible to play. I’ve recorded a video showing some seconds of Marvel Super Heroes vs Street Fighter, notice how annoying it gets:

 

 

I’m using Firebrandx’s default profile since I didn’t find a dedicated profile for arcade PCBs so I guess it’s some kind of sync issue. Unfortunately, I don’t have the required knowledge to tweak OSSCs setting in order to make it work.

Is there any arcade and/or Capcom CPS2 profile available somewhere? Or at least some hint on what should I try to change coming from the default profile to make this more playable?

[BuckoA51]

Which Supergun do you use?

[marqs]

Which HW revision and FW version you have? Also, does the red LED blink at the same time as the blackout?

[Gladson]

@BuckoA51 I use a model that’s enclosed in a Neo Geo case and then there’s an extension cord that goes from there to the part with the jamma connector itself. I haven’t found a better picture but that’s how it is:

[Gladson]

@marqs Hello! Sorry about the late reply, I was waiting for sunday so I could do some proper testing.

The label under the OSSC itself says “model 1.7” and I have been using firmware 0.9

I did the hardware mod so I could try the V1.xx series firmware a while ago and that disables the red light, right? Anyway, the remaining green light stays solid all the time, it doesn’t change during the blackouts.

[marqs]

The mod disables red led, but on V1.xx the same information is encoded in green LED. On sync options you could try adjusting analog sync Vth and/or ADC PLL BW (latter only available on v1.11).

[BuckoA51]

My guess would unfortunately be the supergun as I’ve run CPS2 with no issues using a HAS supergun but definitely try the tweaks @marqs suggests.

[Author]

Posts