It's been a while since my original video showing how to port EhBASIC to YOUR 6502, so I decided to revisit it. Showing various ways to extend your EhBASIC port by adding some custom drawing commands for my build.
Extending BASIC for Graphics
In the video, I cover the CALL command, jump tables, using arguments with CALL, then adding your own custom keywords / commands. In the process, I add some graphics commands for my HBC-56 (65C02 + TMS9918A) build.
6502.org
The 6502 Microprocessor Resource