There were so many comments and ideas on my last video about optimizing C64 BASIC by guitar tuner that I had to make a follow-up video to address the best of these, and make the little program even faster - and higher pitched! Index 0:00 Intro 0:44 Recap of previous optimizations 1:42 Alternative apps for Android 2:18 GOTO with no parameter! 3:12 Blank the screen 4:15 Quick lesson about ANDing bits 6:13 Disable interrupts 7:48 Unrolling loops 10:58 More unrolling! 12:40 Using Pi - whoops, I forgot to get rid of A=15 in line 10 15:14 FOR/NEXT loops as an alternative Links: The first video: “Benchmark By Guitar Tuner? More Commodore 64 BASIC Optimization Tricks”: https://www.youtube.com/watch?v=21aIGHafj1w Davide Fichera, maker of 10 Line BASIC Games: https://twitter.com/Naufr4g0 Spectroid (Android): https://play.google.com/store/apps/details?id=org.intoorbit.spectrum Fine Tuner App (iOS): https://www.finetunerapp.com/ Follow me on Twitter: https://twitter.com/BedfordLvlExp Check out my podcast Growing Up '80s: https://thecouch.website/category/gu80s/