I have written a short program in 6502 assembler for the Commodore 64 using the ca65 assembler and ld65 linker. The program should render a solid square sprite somewhere near the center of the disp...

Trying to learn how to use the ca65 assembler, I've been battling with making include guards work. Googling and reading the ca65 Users Guide didn't help. Here's a minimal example that produces the ...

I know that it's possible to remove top and bottom borders in C64 using assembly, and I've found example codes for that. But I can't find any example code for removing the side borders (which was i...

I have a code like below, and it works fine. It clears the screen, puts some color in color memory of first 12 characters on screen, and prints a text on the screen. jsr $e544 ldx #$00 lda #3 l...