Page 1 of 2
How to apply rgb patches to dreamcast games?
Posted: Thu Oct 24, 2024 2:03 pm
by Tackskull
Hi there,
I have a japanese dreamcast with a brand new terraonion mode installed.
But today I discovered that few games don't support RGB video.
I found on this forum a list of patches to make those games run on rgb.
The fact is that I don't know what program to use. I tried "pp o matic" but seems to work only with ps1 games. In fact, as the autor of the post said, I patche the track19 of the US version of Centipede. And didn't worked with ppf o matic.
There is another ap to use?
Re: How to apply rgb patches to dreamcast games?
Posted: Thu Oct 24, 2024 2:47 pm
by ateam
Re: How to apply rgb patches to dreamcast games?
Posted: Sun Nov 03, 2024 4:18 am
by Tackskull
Sorry, I forgot to reply, thank you so much,

Re: How to apply rgb patches to dreamcast games?
Posted: Wed Nov 06, 2024 9:21 pm
by jasonseeb
Thank you as well!
Re: How to apply rgb patches to dreamcast games?
Posted: Wed Nov 13, 2024 2:16 pm
by muel
Thanks for this! I'm a longtime lurker who finally created an account, unsure how long I have to be a member to access this link so I'm replying in hopes that it toggles my account somehow...
Re: How to apply rgb patches to dreamcast games?
Posted: Wed Nov 13, 2024 3:03 pm
by ateam
muel wrote: ↑Wed Nov 13, 2024 2:16 pm
Thanks for this! I'm a longtime lurker who finally created an account, unsure how long I have to be a member to access this link so I'm replying in hopes that it toggles my account somehow...
Five posts.
Alternatively, you can apply the patches yourself:
https://consolemods.org/wiki/Dreamcast: ... GB_Patches
EDIT: Oh, and I also shared them here, I forgot:
viewtopic.php?p=190119#p190119
Re: How to apply rgb patches to dreamcast games?
Posted: Wed Nov 13, 2024 4:06 pm
by muel
Thanks for that info. Shame it doesn't include some of the others I've run into on my fresh GDEMU install, particularly NBA on NBC Showtime (my stepkids love NBA Jam so I'm hoping to figure that one out at some point).
Re: How to apply rgb patches to dreamcast games?
Posted: Wed Nov 13, 2024 4:24 pm
by ateam
muel wrote: ↑Wed Nov 13, 2024 4:06 pm
Thanks for that info. Shame it doesn't include some of the others I've run into on my fresh GDEMU install, particularly NBA on NBC Showtime (my stepkids love NBA Jam so I'm hoping to figure that one out at some point).
Unfortunately when it comes to RGB, you're going to run into this. Strongly advise seeking another video output method.
Re: How to apply rgb patches to dreamcast games?
Posted: Wed Nov 13, 2024 5:05 pm
by ateam
muel wrote: ↑Wed Nov 13, 2024 4:06 pm
Thanks for that info. Shame it doesn't include some of the others I've run into on my fresh GDEMU install, particularly NBA on NBC Showtime (my stepkids love NBA Jam so I'm hoping to figure that one out at some point).
Actually, I took a quick look and cannot replicate broken RGB with NBA Showtime using an emulator in either North American or European console mode. I'm looking at the disassembled code where it does all of the video initialization logic, and don't see how RGB would ever fail.
Which console region are you using, and what issue specifically do you see with RGB?
Re: How to apply rgb patches to dreamcast games?
Posted: Wed Nov 13, 2024 6:08 pm
by muel
ateam wrote: ↑Wed Nov 13, 2024 5:05 pm
muel wrote: ↑Wed Nov 13, 2024 4:06 pm
Thanks for that info. Shame it doesn't include some of the others I've run into on my fresh GDEMU install, particularly NBA on NBC Showtime (my stepkids love NBA Jam so I'm hoping to figure that one out at some point).
Actually, I took a quick look and cannot replicate broken RGB with NBA Showtime using an emulator in either North American or European console mode. I'm looking at the disassembled code where it does all of the video initialization logic, and don't see how RGB would ever fail.
Which console region are you using, and what issue specifically do you see with RGB?
US NTSC via VGA cable, and on GDMenu I see this:
Which leads me to the typical "game won't load with your cable, please restart" prompt. Do I just need a different rip of the game? Or what else am I missing here?