This used for STC (AT) 89 C51 operating system ucOS-II, is my after modification, absolute can be used

OS_51（可用）\uc_os_II\UCOS_II.H
.............\........\OS_TIME.C
.............\........\OS_TASK.C
.............\........\OS_SEM.C
.............\........\OS_Q.C
.............\........\OS_MEM.C
.............\........\OS_MBOX.C
.............\........\OS_CORE.C
.............\........\INCLUDES.H
.............\...51\OS_CPU_C.C
.............\.....\OS_CPU_A.ASM
.............\.....\OS_CPU.H
.............\.....\OS_CFG.H
.............\src\STARTUP.A51
.............\...\main.c
.............\keil\STARTUP.obj
.............\....\STARTUP.lst
.............\....\OS_TIME.obj
.............\....\OS_TIME.lst
.............\....\OS_TASK.obj
.............\....\OS_TASK.lst
.............\....\OS_SEM.obj
.............\....\OS_SEM.lst
.............\....\OS_Q.obj
.............\....\OS_Q.lst
.............\....\OS_MEM.obj
.............\....\OS_MEM.lst
.............\....\OS_MBOX.obj
.............\....\OS_MBOX.lst
.............\....\OS_CPU_C.obj
.............\....\OS_CPU_C.lst
.............\....\OS_CPU_A.obj
.............\....\OS_CPU_A.lst
.............\....\OS_CORE.obj
.............\....\OS_CORE.lst
.............\....\OS_51_uvopt.bak
.............\....\OS_51_Uv2.Bak
.............\....\OS_51_Opt.Bak
.............\....\OS_51.uvproj
.............\....\OS_51.uvopt
.............\....\OS_51.Uv2.bak
.............\....\OS_51.plg
.............\....\OS_51.opt.bak
.............\....\OS_51.M51
.............\....\OS_51.lnp
.............\....\OS_51.hex
.............\....\OS_51
.............\....\main.obj
.............\....\main.lst
.............\ISIS\OS_51.PWI
.............\....\OS_51.DSN
.............\....\Last Loaded OS_51.DBK
.............\GloblDef\GloblDef.h
.............\uc_os_II
.............\uc_51
.............\src
.............\keil
.............\ISIS
.............\GloblDef
OS_51（可用）

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