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getpsp()                 Get the Program Segment Prefix

 #include   <dos.h>

 unsigned   getpsp(void);

    getpsp() uses DOS call 0x62 to get the segment address of the program
    segment prefix.

    Returns:    The segment value of the PSP.

      Notes:    getpsp() can only be called using DOS 3.x.  For versions
                of MS-DOS 2.x and 3.x, the global variable '_psp' set by
                the startup code can be used instead.