This is a very simple 2-player versus game designed for the Commodore 128 for a short talk I gave about how to write games for old computers, and should prove as a good starting point for folks looking to learn how to write code for this old machine.
The design is very simple, and the code repository is laid out in such a way that you can watch the evolution of the codebase as I develop it by switching and diffing between the “techtalk-step-N” branches.
You’ll need a recent build of the ACME cross assembler and a traditional POSIX development environment (ie: make and shell).
Assume GPLv2.