File list (Check if you may need any files):
small RTOS\KEILC51\OS_CPU_A.ASM
..........\.......\OS_CPU_C.C
..........\.......\_desktop.ini
..........\object\CONFIG.H
..........\......\ld_os
..........\......\ld_os.hex
..........\......\ld_os.lnp
..........\......\ld_os.M51
..........\......\ld_os.Opt
..........\......\ld_os.plg
..........\......\ld_os.Uv2
..........\......\ld_os_Opt.Bak
..........\......\ld_os_Uv2.Bak
..........\......\MAIN.C
..........\......\MAIN.lst
..........\......\MAIN.obj
..........\......\OS_CFG.H
..........\......\OS_CORE.lst
..........\......\OS_CORE.obj
..........\......\OS_CPU.H
..........\......\OS_CPU_A.lst
..........\......\OS_CPU_A.obj
..........\......\OS_CPU_C.lst
..........\......\OS_CPU_C.obj
..........\......\OS_MEM.lst
..........\......\OS_MEM.obj
..........\......\OS_Q.lst
..........\......\OS_Q.obj
..........\......\OS_SEM.lst
..........\......\OS_SEM.obj
..........\......\STARTUP.A51
..........\......\STARTUP.LST
..........\......\STARTUP.OBJ
..........\......\test.LST
..........\......\test.OBJ
..........\......\_desktop.ini
..........\OS\OS.H
..........\..\OS_CORE.C
..........\..\OS_MEM.C
..........\..\OS_MEM.H
..........\..\OS_Q.C
..........\..\OS_Q.H
..........\..\OS_SEM.C
..........\..\OS_SEM.H
..........\..\_desktop.ini
..........\_desktop.ini
..........\KEILC51
..........\object
..........\OS
small RTOS