Made an interactive #Atari 8-bit sound tutorial by translating my NES driver for the #POKEY:
https://bobbicodes.codeberg.page/nerdyPOKEY/
It builds up a basic sound driver in 6502 assembly in 9 incremental steps, from playing a single note to a simple tune. Uses my own custom assembler and the ASAP player for the CPU and POKEY emulation.