HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

         MSC: unsigned _dos_setblock( unsigned size, unsigned seg,
                                       unsigned *maxsize )

       - prototype in dos.h

       - size = new block size
       - seg = segment of DOS memory block to change
       - maxsize = size of buffer actually allocated if size not available

       - returns 0 on success or DOS error code on failure

       - Turbo C uses setblock()
       - see   INT 21,4A   _dos_allocmem()   _dos_freemem()

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