MAC/65 Assembler Editor and Atari 8-bit Machine Language Programming - Part 9.2

The 12th in a series of videos in programming in Assembly Language for the Atari 8-bit computers using the MAC/65 Assembler Editor cartridge.
This video covers:
I complete the last major portion of coding logic for checking a joystick and moving a character around on the screen in assembly language. I introduce four new instructions and demonstrate how to code nested IF-THEN statements in Assembly. I also explain a potential memory issue that can happen during assembly on a 48K machine with MAC/65.

Unfortunately, I also make a typo 6 1/2 minutes in that leads to a 30 minute debugging session in DDT. Not totally a bad thing because I get to show how to debug in MAC/65 DDT by setting single and multiple breakpoints in DDT and how to work them.

Code for my videos are at my GitHub at http://GitHub.com/DavidArlington/MAC-65. Expect a couple days lag for each videos code to be uploaded since they will be more heavily commented.

Atari Books referenced in this video and where you can download them:
MAC/65 and DDT Manual:
https://www.atarimania.com/documents/...

Mapping the Atari by Ian Chadwick:
https://www.atarimania.com/documents/...

Compute's Machine Language for Beginners by Richard Mansfield:
https://www.atarimania.com/documents/...

Compute's Second Book of Machine Language by Richard Mansfield:
https://www.atarimania.com/documents/...

Atari Roots by Mark Andrews:
https://www.atarimania.com/documents/...

SAMS Programmer's Reference Guide for the Atari 400/800 Computers:
https://www.atarimania.com/documents/...

Your Atari Computer by Poole, McNiff, and Cook:
https://www.atarimania.com/documents/...

Tom Hudson's Machine Language Boot Camp Series Analog Magazine (starting in Issue 13):
https://archive.org/details/analog-co...