SAD is much more usable than RomWack for machines, with its binary interface. Much less overhead, too.
RomWack allows direct human use; It is possible to just attach a terminal to the serial port. However, it is fragile, slow, and overall terrible. It is part of the kickstart, but any of the debuggers available for the Amiga will otherwise be better.
There's some notes on RomWack in
https://github.com/rvalles/pyamigade...ee/master/docs
For SAD, just check the 3.1 dev docs.
https://amigadev.elowar.com/read/ADC.../node0249.html
(partial) Debugger wrappers at:
https://github.com/rvalles/pyamigade...ter/RomWack.py
https://github.com/rvalles/pyamigade.../master/SAD.py
I will eventually have enough to implement gdb protocol.