I'm using a PAL Dreamcast on a Scart TV with a real RGB cable and I have a few doubts about some issues regarding my console. I'm asking here becasue I'm sure there are people in this forum with enough knowledge and experience to answer these questions.
When I'm using my DC on my PC monitor via VGABOX, my console is displaying 640x480 at 31khz (as indicated in the OSD of my monitor). Correct? Now, I guess this is the same frequency used in Naomi cabinets, which have Arcade mointors capable of accepting video at 31khz, right? In fact, if you stare at those monitors you cannot see scanlines, as you cannot see them in a PC monitor. I suppose the picture in those Arcade monitors is non-interlace, right? But when I use my DC on the TV with the RGB cable, the picture is interlace. I guess it's interlace because a TV cannot accept 640x480 non-interlaced, am I wrong? I also assume the signal is sent to the TV at 15khz, correct? The interesting issue is that some low res games such as Last Blade 2 or SFIII double impact display non-interlace picture (more stable display and perfectly visible quiet scanlines). Would it be possible to have this non-interlace display with 640x480 games? And why other games such as SFIII third strike, which is also low res, display interlaced picture (no quiet scanlines). Could I change it to non-interlace with some hacking to my RGB cable?
And that's all. All I'd like to know is whether I can have 15khz non-interlace display in all Dreamcast games, be it on a Scart TV or an Arcade monitor, and what do I have to do to achive this. Or at least, if anyone knows how to display the incredible SFIII third strike with the same beautiful scanlines that happen with SFIII double impact. The picture of the Dreamcast with the RGB cable is superb, but it could be even better at 15khz non-interlaced. I guess it must be possible, because otherwise, how to users of low res Arcade monitors use their Dreamcast in their cabinets? If there's any DC user who has build a cabinet with this console, please let me know what you had to do for using it with your monitor, and what kind of picture you obtain in your Arcade monitor (interlace or non-interlace).
Thank you very much.