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…

Making a diagnostic harness for a C64

While playing Planet X2, I noticed that some of the text on the bottom right corner of the screen was garbled. I contacted the author of Planet X2 to see if he’s seen this sort of thing before. He suggested that the problemay be due to a memory fault (yep!) Check out the text in…

C64: down the rabbit hole…

I am still working out the details regarding my coffee experiment. It’s actually more complicated than I thought and I will probably need to recruit some subjects to conduct it. Why is this being delayed? Well, mainly because I just rediscovered my old Commodore 64 computer. This has led me down a rather long, but…