countdown timer in x86 assembly | SCHIZONE LAB-04

4th lab in a series on scientific computing from scratch using x86-64 assembly. This video implements a very simple countdown timer.

code: https://github.com/xmdi/SCHIZONE

3 good resources:

x86 instruction reference: https://www.felixcloutier.com/x86/index.html

linux/freebsd syscall concordance: https://www.lurklurk.org/concordance.html

old draft of System-V ABI: https://refspecs.linuxbase.org/elf/x86_64-abi-0.99.pdf

secret discord link: https://xmdi.us/misc/discord.html ... https://www.youtube.com/watch?v=_ElYsWY4xss