The objective of this assignment is to implement a preemptive kernel. The preemptive kernel can be developed based on the non-preemptive kernel implemented in previous lab. Use the context switch function supplied in the homework.

实验课做的一个华容道，界面美观，绝对可以运行，基于ARM3000平台-Lab do a Huarong, beautiful interface and it can definitely run, based on the ARM3000 platform