Some notes on adjusting the Datassette head azimuth on the Vic-20

I wrote a program for the (unexpanded) Vic-20 that is based on the Micro Head Align program for the Commodore 64. I wrote this program because there are many of these kinds of programs for the Commodore 64 and none for the Vic-20. For example, on the Commodore 64 you can use the excellent HeadAlign…

Carduino keypad

The Cardco Cardkey is a numeric keypad that was made specifically for the Vic-20 and C64. I wanted to get one, since I am learning 6502 machine language programming, which involves entering hexadecimal numbers. I wanted to see if I could use the keypad as a hexadecimal keypad, since entering hex numbers on a standard…