I'm not that good at Portuguese, so I'll answer in English, I hope that helps as well:
The Mugen interpreter for Dreamcast is called Dolmexica. Creating a Mugen/Dolmexica disc for Dreamcast generally has two steps.
- The first step is to create the Dolmexica mod you want to. burn to the disc. First, download the newest Dolmexica binary here. There is also a Windows version, which you can use to test characters/stages without wasting a disc. Dolmexica and Mugen share the same folder structure, except two small differences: In Dolmexica, all files are located in the assets folder (so the relevant folders relative to the 1ST_READ.BIN, the binary, become assets/data, assets/chars, etc.). The second difference is that Dolmexica does not support minuses in file names, due to restrictions in the ISO naming format for CDs. As I said, what you generally want to do is check your files with the Windows version first and then burn them to Dreamcast to see if things still work out with runtime/memory/etc. Which brings me to the second step:
- Actually burning the disc. This can be a bit tricky, but luckily there are programs available to help with this step. The one that is most commonly used is bootdreams, and christuserloeser wrote a rather comprehensive guide on how to make CDs with that here: http://dcemulation.org/phpBB/viewtopic.php?t=82700. Once you have the 1ST_READ.BIN and the folder with all the characters/stages, you can follow the part "How to create and burn your own DC image with BootDreams" of the guide to create a selfboot cd that works on Dreamcast.
It's still a bit rough as far as usability is concerned and I apologize for frustration that might come from that. I'll work on making the whole process easier once I've gotten to a better place with the main Mugen interpreter stuff. Either way, thanks for writing!