debugger documentation is actually all you need: https://docs.mamedev.org/debugger/general.htmlAre there tutorials available or maybe ekorz is willing to make a tutorial on how to mod Dodonpachi?!
Any links would be appreciated.
I'm willing to start my own ddp campaign project in private (I'm sure many others would too).
There's nothing illegal in tutorials.
There are a bunch of romhacking tutorials out there, I'm not doing anything special but I did work up to this level of complexity by starting at something very small.
In extremely broad strokes, you let mame or ghidra or whatever else disassemble the program rom binary, then you read through it and use the debugger to figure out what is doing what, and then make edits in the binary to implement the changes you want. I built some tooling to help make things faster, but it's nothing special.
Also, there's no legal issue with any of my work/code/patches/etc. I've just made an educated choice to pause this release, based on new information that was shared with me in private.