C Development environment for Apple Lisa and an "LisaPaint" Example App

PappaDF

New Tinkerer
Aug 4, 2026
28
17
3
(previously posted this on 68kmla):

I wanted a way to write Lisa applications in C, so I put together a small cross-development environment based on the Retro68 compiler. If you're interested in developing Lisa applications in C, you can check it out here: https://github.com/pappadf/lisa-c

I also needed a demo application to test the C environment, and I've always felt that a "LisaPaint" was missing, so I created a simple first version.

You can find the code here: https://github.com/pappadf/lisa-paint

And you can try it out live here: https://pappadf.github.io/lisa-paint/

(My wanted end goal was really to implement some kind of AppleTalk network support, but I had to start somewhere)


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Note that AI tools were used as part of this work. I know that is a red flag for some, and I fully respect that.
 

PappaDF

New Tinkerer
Aug 4, 2026
28
17
3
That would be cool!

Indeed - and it would solve a number of practical problems (e.g. how to easily move fils in and out of an emulated or real Lisa). From a hardware perspective, I think it should be all good, i.e. as far as I know, you could use AppleTalk under MacWorks - it's just the software side that is missing for LOS.