This repository is a collection of small documents with notes about several topics related to Osdev.

They are not meant to be complete (maybe one day they will be), they are just personal notes, i will keep updating them while developing the OS

They are divided by topic, and usually in addition to information widely available on internet i try also to add information based on personal experience, advice received, or mistakes made.

I hope that someone will find them useful.

Topics covered so far:

• Drawing text on framebuffer
• Environment setup (for a 64bit os)
• Multiboot
• Framebuffer
• Moving the kernel in the higher half
• Interrupt handling (64 bit)
• Nasm tips
• Memory Management
  • Paging
  • Memory Allocation
  • Physical Memory
• Global Descriptor Table
• APIC
• Keyboard
• Timer
• Debugging
• RSDP_and_RSDT
• C Language tips and tricks
• TroubleShooting
• Misc tips and tricks

Again they not mean to be complete, and are more a place where i try to keep things that i don't want to forget.

• DreamOs64 64 Bits Os written from scratch by Dreamos82
• Northport Another 64 bit Os written from scracth with SMP! by DeanoBurrito
• DreamOs 32 Bits Os written from scratch, the project is discontinued but i think it was worth mentioning. By Dreamos82

Thanks to:

• Dean T For his contributions in many sections of these notes! (i would say he is a co-author now)