PRODUCT  :  Borland C++                            NUMBER  :  705
  VERSION  :  2.0
       OS  :  DOS
     DATE  :  October 19, 1993                         PAGE  :  1/2

    TITLE  :  Allocating More Than 64K of Memory in DOS




  /************************************************************************

  This program demonstrates the dynamic allocation of a memory
  block larger than 64K bytes using farcalloc().  It should not be
  compiled in the Tiny memory model.  The program calls farcoreleft
  prior to allocating the block of memory to determine how much
  memory is available.  Note that this method will not be accurate
  if memory has been previously allocated and then released as the
  released memory is handled differently. If you choose to run this
  program from inside the integrated development environment you
  must set the head size under OPTIONS/DEBUGGER to at least the
  size of the two parameters passed to farcalloc() + 5 bytes. Also
  note that farcalloc can be interchanged freely with farmalloc or
  farrealloc in this example.

  ***********************************************************************/


  #include <stdio.h>
  #include <alloc.h>
  #include <string.h>
  #include <dos.h>
  #include <conio.h>

  int main(void)
  {
     int huge *fptr;
     unsigned long val;

     clrscr();

     /* Check the amount of memory available if no blocks have been
        freed */
     printf("\nMemory available on the far heap:   %lu\n",val =
             farcoreleft());

     /* allocate memory for the far pointer */
     fptr = (int huge *) farcalloc( 66000L, sizeof(int));


     /* display string (note the F modifier) */
     printf("Address of allocated block is:      %Fp", fptr);














  PRODUCT  :  Borland C++                            NUMBER  :  705
  VERSION  :  2.0
       OS  :  DOS
     DATE  :  October 19, 1993                         PAGE  :  2/2

    TITLE  :  Allocating More Than 64K of Memory in DOS




     /* Check how much memory is left */
     printf("\nMemory left on the far heap:        %lu\n",val =
               farcoreleft());

     getch();

     /* free the memory */
     farfree((int far *) fptr);

     return 0;
  }


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  subject to the terms of the No-Nonsense License Statement that
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  pertains.