A very ambitious feature list

MMU

• Basic Heap Allocator:
  • Start with a basic heap allocator with a linked list free list
• Paging:
  • Implement virtual memory by introducing basic paging

Clock/Interrupts

• RTC clock
• GDT
• IDT

Process Management

• PCB
• Context switching
• Basic process mechanism with a time sliced scheduling

Multithreading Support

• Thread creation/synchronization/thread-local storage

File System

• Minimal FS
  • Start with a minimal in-memory fs
  • Implement basic calls like open, read, write, close
• FAT12 FS

I/O

• Drivers:
  • Console I/O
  • Disk Driver
• Keyboard and Mouse

IPC

• Signals
• Pipes

Networking (TODO enhance list)

• Ethernet Driver

Use Space Programs

• Sys call interface
• Program loading
• Shell

Steps to run gdb

./qemu

References

• osdev wiki
• https://youtu.be/gBykJMqDqH0?feature=shared
• https://www.felixcloutier.com/x86/
• RTC: https://www.nxp.com/docs/en/data-sheet/MC146818.pdf
• UART: https://media.digikey.com/pdf/Data%20Sheets/Texas%20Instruments%20PDFs/PC16550D.pdf