4 ms·

First you write a disassembler, then an interpreter for 16 bit mode. At that point you can already almost run FreeDOS. Here are some resources: http://css.csa

by copy 11y ago

First you write a disassembler, then an interpreter for 16 bit mode. At that point you can already almost run FreeDOS. Here are some resources: http://css.csail.mit.edu/6.858/2014/readings/i386/toc.htm http://css.csail.mit.edu/6.858/2014/readings/i386/toc.htm The official intel manuals http://sandpile.org/ http://sandpile.org/ http://ref.x86asm.net/geek.html http://ref.x86asm.net/geek.html http://stanislavs.org/helppc/idx_hardware.html http://stanislavs.org/helppc/idx_hardware.html http://www.ctyme.com/intr/int.htm http://www.ctyme.com/intr/int.htm http://wiki.osdev.org/Main_Page http://wiki.osdev.org/Main_Page

stephenboyd 11y ago
If the reference manuals are overwhelming, I'd recommend to start by reading Code: The Hidden Language of Computer Hardware and Software by Charles Petzold. It covers how computers work for a general audience, from logic gates and boolean algebra, up to assembly, opcodes on the Intel 8080 processor, and how operating systems work. It was one of the most consequential books I've read, and I'd recommend it to both professional programmers and anyone else who is intellectually curious.