one of the biggest issues with games in forced vga is them displaying on 1/4 of the screen. This happens because the resolution of display changes to 640x480 but all the data is designed for 320x240.
I never ever experienced that. Got any example ?
Happened to me a few times early on in neodc dev. Otherwise only anecdotal.
Interesting. Both Yabause DC and GenesisPlusDC are 320x240 and both run perfectly and in full screen in VGA.
You probably found a way to somehow deactivate the upscan... ?
I also got no idea what they mean when they say "patchable".
Surely this would a catalyst for running a "backup" version of a game (instead of a GD original) as you could at least manually patch those to force VGA support?
All that's missing would be a flag in the IP.BIN bootsector, so yeah, they could be "patched" by adding this flag.
Well, since you obviously have an idea of what "patched" means, it's logical to take the meaning of patchable to be: 'able to be patched'. In this context there would also be added 'in order to achieve vga compatability'
Basically I questioned it because they don't specify what they mean exactly. - I doubt that they are referring to the missing flag in the IP.BIN, but how would we know for sure ?
Blue Stinger EUR / JAP / US EUR: bedingt, Sound in Cutscenes asynchron, US+JAP: ja
It seems Nephil has also seen problems caused by forcing vga.
No, it says that the EUR version has video in 25 or 50fps (for 50Hz playback), thus it wouldn't be in sync with the audio when forcing VGA (in 60Hz). They list the US/JP versions as VGA compatible.
- Anyway, I didn't ask for some odd links, I asked for your experience with 'VGA and glitchy graphics.
I don't see that. What you asked is if I had any examples. I have examples experienced by others. What's the problem?
There's no way to verify these if certain testing conditions aren't provided. Nephil's list is pure gold for exactly that reason as it tries to list only original games (not 'patched' backups, which should work anyway) and also specifies the regional differences.
Jojo's Bizarre Adventure (US version) comes to mind; I managed to get a playable picture by maxing out the vsize knob on an old NEC Multisync (the original series that could do anything from digital CGA/EGA to analog SVGA 800x600), but even then the scrolling level had some serious artifacts on it.
Thanks for the hint on this one. - So, the video appeared only at 1/4 of the screen ?
@DCDayDreamer: I'll look into Simon the Sorcer too.
I think I also tried a cable swap on King of Fighters: Dream Match 1999, and it didn't bother to set up a VGA output; I'm not sure what it would do if the header were patched.
The cable swap is a really simple yet buggy solution: Plugging it back in won't get you any picture at times, but if you do advance to the next screen by e.g. skipping your game's intro, the Dreamcast will initialize the VGA out and you'll get a picture.
It looks like we need a new detailed list for Dreamcast users, that in itself would be one hell of a task, you'd have to have every game to begin with, boot them all normally (record the results), try a boot disk with the ones that didn't work normally (record the results), try ripping/patching/burning the ones that didn't work (record the results)... etc. etc.
Yeah, but it should be worth it. The Dreamcast's VGA is one of the most amazing things this machine has to offer. I mean I always hear people claiming that the Dreamcast was way ahead of its time - and it's its VGA feature that actually was. It makes Dreamcast the only retro console that's fully HD compatible, almost a decade before 360 and PS3.
Anyway, it seems that Grimlock is getting close with his approach: viewtopic.php?p=1001774#p1001774