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====== Int 31H, AH=07H, AL=03H ======

===== Version =====

0.9

===== Brief =====

Discard Page Contents

===== Input =====

  AX = 0703h
  BX:CX = starting linear address of pages to discard
  SI:DI = size of region to discard (bytes)
    
===== Return =====

  if function successful
  Carry flag = clear
  
  if function unsuccessful
  Carry flag = set
  AX = error code
  8025H	invalid linear address (range unallocated)

===== Notes =====

Discards the entire contents of a given linear memory range. This function is used when a memory object (such as a data structure) that occupies a given area of memory is no longer needed, so that the area will not be paged to disk unnecessarily. The contents of the discarded region will be undefined.

Partial pages and locked pages will not be discarded.

===== See also =====

   

===== Note =====

Text based on [[http://www.delorie.com/djgpp/doc/dpmi/]]

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