Re the text editor, when I was writing an editor for my homemade CPU I used the one from this tutorial: https://viewsourcecode.org/snaptoken/kilo/index.html htt

Re the text editor, when I was writing an editor for my homemade CPU I used the one from this tutorial: https://viewsourcecode.org/snaptoken/kilo/index.html https://viewsourcecode.org/snaptoken/kilo/index.html - it is 1000 lines of C. Might be useful to you. I have diverged a bit from the tutorial because I didn't want syntax highlighting, I really wanted vi-style keybindings, and my environment is much more performance-constrained. Mine is at https://github.com/jes/scamp-cpu/blob/master/sys/kilo.sl https://github.com/jes/scamp-cpu/blob/master/sys/kilo.sl (in my made-up programming language).