There is "Apple Machine Language for Beginners" by Richard Mansfield https://archive.org/details/Apple_Machine_Language_for_Beginners_Richard_Mansfield/page/n1/

There is "Apple Machine Language for Beginners" by Richard Mansfield https://archive.org/details/Apple_Machine_Language_for_Beginners_Richard_Mansfield/page/n1/mode/2up https://archive.org/details/Apple_Machine_Language_for_Begin... I have fond memories from the late 1980s of trying to get the assembler contained within this book working, typing line after line of the MLX listing in. Unfortunately I never did finish it back then. A week or so ago I got the urge to complete this project and I literally just finished getting the source in it to a point where it can be compiled online and then within an emulator: https://github.com/jlmcgraw/LADS_DOS33 https://github.com/jlmcgraw/LADS_DOS33