I use Mr. Chen Mingji written small RTOS and 51 MCU done several small projects at first were very good to develop easy to change the program become easier to modify. Subsequently, the increase in the number of tasks, RAM is not fast enough. 51 series of chip RAM are generally 256, it is difficult to find 1024 bytes of RAM or more, while prices will be appropriate. I remember the last time I had no way forced to use a 64K flash with 768 bytes of internal XRAM of 51 chips, and I will never use that much flash.

TOS-VR
......\CONFIG.H
......\Ex1.c
......\Makefile
......\OS.H
......\OS_CFG.H
......\OS_CORE.c
......\OS_CPU.H
......\OS_CPU_A.c
......\OS_CPU_C.c
......\ReadMe.txt
......\RTOS for AVR.Opt
......\RTOS for AVR.plg
......\RTOS for AVR.Uv2
......\RTOS for AVR_Opt.Bak
......\RTOS for AVR_Uv2.Bak

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