Post #2018672
2026-05-05 13:07 UTC
@mcmartin I suspect the 6502 has a lot of resources specifically from folks doing home-brew for the Famicom/NES?
But since these chips were mostly used in general-purpose computers, the programming environment was *self-hosted*. The chips themselves are generally very simple, and most of the important info you need is how to interact specifically with the hardware in your system, and that's often provided as documentation along with the development tools that run on the system.
For example, along with my TRS-80 Color Computer, I inherited a book "TRS-80 Color Computer Assembly Language Programming" which includes a guide to the 6809 CPU, ROM subroutines included with the computer, and how to work with input and output devices (keyboard, graphics, sound, etc) on the machine… along with instructions on using the EDTASM+ editor/assembler and ZBUG debugger.
Replies (1)
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@kepstin@tenforward.social 2026-05-05 13:16
@mcmartin there's a few books for the 6809 in the Color Computer archived over at https://colorcomputerarchive.com/repo/Documents/Books/ if you're interested at poking around. By the time of the m68k stuff people were starting to use higher level languages and operating systems, not so much interacting with the CPU directly (tho it was used in the sega genesis/mega drive). You'd probably be looking for pascal/delphi or C compilers for old mac os versions, unix, or os9 (not to be confused with mac os version 9).