metios

MetiOS is a pet operating system that I'm cooking in my backyard. I'm following the tutorial on the BrokenThorn Entertainment website

Progress

• First stage bootloader (loads the second stage bootloader)
  • BIOS Partition Block
  • Debug Print Routine
  • Routine to convert Logical Block Address (LBA) to Cylinder Head Sector (CHS)
  • Routine to convert CHS to LBA
  • Routine to load FAT root directory into memory
  • Routine to read FAT sectors into memory
  • Build Scripts for Linux
  • Build Scripts for Windows
• Second stage bootloader (loads the kernel)
  • 16-bit Print String Function
  • Global Descriptor Table (GDT) Installation
  • Enter Protected Mode (32-bit)
  • Enable A20 line
  • VGA Programming in Protected Mode
    • Put Character on screen (including newline)
    • Move cursor to correct position on screen
    • Put a string on screen
    • Slide up a line when screen fills up (Not in tutorial)
• and so on...