Hello fellow 68k enthusiasts,
I'd like to share a Mac project I've been working on for a bit now. I've been exploring "bare-metal" programming on the original Macs (128k/512k/Plus) and just got around to writing up my initial efforts here:
But perhaps more importantly, I'd like to solicit some help in the next stages of my efforts to produce something modestly useful/interesting on the Mac hardware, without any real help from the ROM/System.
I've got an 'experimental' branch in my 'HappyJon' repo that carries things further than the initial demo in my writeup. This branch demonstrates a compact font, character and string assembly routines, and the beginnings of porting newlib. And it's this last part that I'm hoping to get some help with. I'm having some difficulty with pc-relative code and linking...
Anyway, would love some feedback on this or any other aspect of the project.
Here's the repo: https://github.com/jrsharp/HappyJon