I have the following code: section .data array times 1024 DW 0 section .text global _start _start: mov ecx, array ; Store the ponter to the first array element ; ---- ADD ---- ...

Background: I have been learning x86_64 assembly using NASM on a Linux system and was writing a subroutine for strlen(const char *str) I wanted to copy one byte starting from a pointer stored in rax ...

global _start section .data firstMsg: db "hello worms, please say the passcode", 10 firstLen: equ $ - firstMsg secondMsg: db "Correct", 10 secondLen: equ $ - secon...

I have trouble to grasp how to use colors in CGA/EGA/VGA video graphics modes. The video modes I'm particularly interested in are 0Dh (EGA 320x200) and 12h (VGA 640x480). Both of these modes have 4 pl...