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Compiler/TMS570LS3137: TMS570LS3137 HAL SOFTWARE PROBLEM

Part Number: TMS570LS3137


Tool/software: TI C/C++ Compiler

Hello 

I found the old program of TMS570 ,which have the files uc-CPU/ARM-CORTES-R4/CCS cpu_a.sam ,cpu_int.c, cpu_int.h, cpu_h,sys_memory.asm,sys_memory.h
These are officially provided.I want to know where  can I find it. And what function is it .
Do I still need to use it now?