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µVision® User's Guide

memset

Summary 
void memset (start_address, length, value)  /* fill memory with value */
Description 

The memset function sets the memory specified with start address and length to the specified value.

Return Value None
Example 
>MEMSET (0x20000, 0x1000, 'a')       /* Fill 0x20000 to 0x20FFF with 'a' */