单片机上的运行的操作系统smallrtos51 这个压缩包里面是书的配套光盘代码-these are some cases about small rtos51 that can run on a C8051based mcu.

Small RTOS51 以51為嵌入式系統開發的系統核心 藉以降低成本-The Small RTOS51 51 for embedded system development, the core of the system in order to reduce costs