Demo OS for multi tasks
This demo OS is designed to understand the principle of operating system. It contains almost all basic concepts of linux kernel, such as GDT, LDT, IDT, BIOS, REAL MODE, PROTECTED MODE, USER MODE, KERNEL MODE, SYSTEM CALL, INTERRUPT and so on.
There are two tasks, one is A(task0), which displays the character A, while the another is B(task1), which displays the character B. There will be a time-interrupt every 10ms, and the OS will switch these two tasks when time-interrupt happens.
$ make
$ make disk