NESRGB issue

Ah ok. That makes much more sense. Thank you for the info. That explains why the PS1 cables I've been seeing are Sync-on-Luma instead of composite video or C-Sync. I wonder if the PS1/PS2/PS3 have C-Sync on the board somewhere but no way to output it, much like Component video in the ColecoVision.

 

Well, as I mentioned previously, both luma and composite video as sync sources give the same result: cropping on the left. And in this case it definitely is cropping as in missing graphics.

As adimifus pointed out, using csync, it looks like the blue bg part is moved to the left side, so this could be better described as wrap-around than cropping perhaps, i.e. no missing graphics. So maybe the solid background confuses the TV to think that the horizontal line starts later than it does? I think the NES is the only system I have that has those. Master System has some solid bg on top and bottom but not on the sides, I think.

I'd love to learn more about syncing signals and how they work. Is there any good place to read up on this?

 

Well then it is the TV after all. The TV could be confused about the background.

I couldn't find a Wikipedia article on Sync so I'm not sure of a good place to read up on it. I picked up my knowledge over the past couple of years from multiple sources. I believe the most common forms of Sync signals are Composite Video (used in composite video and RGBS), Luma (used in RGBS, S-Video, and Component Video), C-Sync (used in RGBS), H-Sync (used in RGBHV VGA), V-Sync (used in RGBHV VGA), and Sync-on-Green (used in RGsB VGA but its not too common and not many VGA monitors support it). Two rare Sync methods are Sync-on-Red and Sync-on-Blue.