In this video I show how you can call pre-defined machine code routines to achieve collision detection! This video is the most complex so far in this series, but I hope it will uncover the mysteries of OSBYTE and how to get the 6502 microprocessor to do things without you needing to write your own machine code. Enjoy!

RESOURCES:
Cosmic Invaders: http://www.colinhoad.com/bbcmicro/cosmicinvaders/
OSBYTE: https://beebwiki.mdfs.net/OSBYTE
OSBYTE function calls: https://beebwiki.mdfs.net/OSBYTEs