Str_copy PROC

   Copies a null-terminated string from a source location to a target location.
   The target operand must be large enough to hold the copied string.

Call args:  ADDR source,
            ADDR target

Return arg: None

Example:

.data
source BYTE "hello",0
target BYTE SIZEOF source DUP (?)

.code
       INVOKE Str_copy,
              ADDR source,
              ADDR target