Reply To: PAL Dreamcast at full screen flickering issue

[MLConian]

I was thinking of getting RGB cables, but then I read some comments on Reddit where people used the Packapunch RGB cables on a PAL Dreamcast and still have the same issue. Other than that, RGB SCART cables are nearly impossible to find in the Netherlands.
I did manage to find another Dreamcast, and it actually has the very same problem. I was able to capture a video of Sonic Adventure 2 NTSC-U running on it. The same flickering band pops up on 60Hz PAL games, or anything that runs in full screen (I’m not sure Skies of Arcadia PAL actually runs at 60Hz, but it’s definitely full screen), but it was easiest to capture on Sonic Adventure 2.

I’m starting to think this is caused by the CSYNC signal if the video processor runs in PAL mode, because it’s supposedly gone on VGA, which uses VSYNC and HSYNC on separate pins and ignores the PAL/NTSC processing (according to the Dreamcast service manual I found) – but I have no means/skills to actually verify that. I do know, however, that the RGB cables still use the CSYNC pin (pin 10).