search

ramapcsx2 / gbs-control

GNU General Public License v3.0
792 stars 111 forks source link

NÊo Geo sync #569

Open pkerga opened 2 weeks ago

pkerga commented 2 weeks ago

Hello. I started building my own GBS Control. I made some purchases on AE a few days ago and this weekend, I started. What an incredible satisfaction to see the screen light up. It works pretty well 😎. I have a problem with my Neo Geo AES, like many. With the GBS Control from Il had, by putting 'Sync on green' on and playing with 'SyncWatcher' in the options, it worked after a while. Not with my build.

I have several ideas:

What do you think?

ramapcsx2 commented 2 weeks ago

I think it was more about the logic configuration regarding the sync processor with these MVS. The sync signal itself should be in good shape, but the combination of odd refresh rate and possibly some tricky serration pulses or such is what makes none of the autodetect methods find proper settings, and so it keeps trying forever to get a good sync lock. It could be some random setting in segment 5 / sync processor, is my guess.

pkerga commented 2 weeks ago

Thanks, what do you mean by "segment 5" ?

ramapcsx2 commented 2 weeks ago

For developers, this is the register range that contains various sync extractor settings. It's not accessible for users, but has to be implemented in the GBSC code to work.

pkerga commented 2 weeks ago

Just to be sure, do you think using a RGB to Component converter could help ?

ramapcsx2 commented 2 weeks ago

Eh, 60/40 towards not helping. It is about the sync portion, and if such a transcoder would process sync into something better working, then yea. But a bit unlikely.