Int 21H Function 4AH
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Description: Resize Memory Block
Dynamically shrinks or extends a memory block, according to the needs of
an application program.
Input Output
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AH=4AH If function successful
BX=desired new block size in Carry flag=clear
paragraphs If function unsuccessful
ES=segment of block to be Carry flag=set
modified AX=error code
BX=maximum block size available
(paragraphs)
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