Doom wads

[Slimjim1]

Hello all!

I'm new to the modded dreamcast scene, but have owned a Dreamcast since the NA launch.
I have been playing some homebrew and ports on my gdemu and was wondering about Doom wads.
I have doom, quake, duke nukem, etc. All working on the gdemu, but haven't explored wads for the dreamcast yet. I have done a ton of doom wads on pc and the original xbox. I am just curious if anyone knows which programs I can use to port doom wads for dreamcast or which programs to use for extracting cdi/gdi files to see the folder structure etc.
Any help (preferably with links) is appreciated.