nctuOS

A tiny OS that used for course OSDI in National Chiao Tung University, Computer Science Dept.

This OS only supports x86

Lab 3

In this lab, you will learn about interrupt and segmentation mechanism in x86.

We provided you with keyboard handler, timer handler, and simple VGA driver.

You can leverage grep to find out where to fill up to finish this lab.

$ grep -R TODO .

To run this kernel

$ make
$ qemu -hda kernel.img -monitor stdio

• Modify boot/boot.S to setup GDT
• Modify kernel/trap.c and kernel/trap_entry.S to setup IDT for keyboard and timer
• Modify kernel/main.c to uncomment the setup process
• Modify kernel/shell.c to support kerninfo and chgcolor

After this lab, you should know about how interrupt works and the working flow of GDT & IDT

Acknowledgement

This is forked and modified from MIT's Xv6