Detecting Screen Size & Using KERNAL Routines in BASIC (C64, C128, & VIC-20)

A 3-in-1 BASIC programming tutorial that demonstrates how to detect the size of the current screen, interact with KERNAL routines & processor registers, and know if we're running on a Commodore 128.

This short program works on the Commodore 64, the Commodore 128, and the VIC-20.

CHAPTERS-
0:00 - Intro
4:24 - C64 Demo
05:32 - Code - Setup
10:46 - Code - Main
15:41 - C128, VIC-20, & Outro

LINKS-

Basic Bites - Files & Downloads
- http://files.basicbites.ca/

Commodore 64 Programmer's Reference Guide
- https://archive.org/details/Commodore_64_Programmers_Reference_Guide_1983_Commodore/

Commodore 64 Programmer's Reference Guide (alt.)
- https://archive.org/details/Commodore_64_Programmers_Reference_Guide_1983_Commodore_a/

#Commodore64 #Commodore128 #BASIC #KERNAL #Programming