A demo using Interrupts from the VERA chip at particular scanlines, to make a 'split-screen' effect.
The screen splits at two locations (3 sections). The second section is animated using the Horizontal scale register.
You need to install Python 3 (any version will do) to generate the sine table for the animation
Use the make command in the project directory to build the whole project. An output file vera.prg will be placed in the build directory.
Run make run command to launch the ROM in the x16 emulator.
Once you are in the program, you can press 'q' (and Enter) to quit the program back to the BASIC prompt.