please dont rip this site


Interrupt 21h

Function 4Ah Modify Allocated Memory Blocks (SETBLOCK)

Expand or shrink memory for a program

entry AH 4AH

BX new size in 16 byte paragraphs

ES segment address of block to change

return CF clear nothing

set AX error code (7, 8, 9)

or BX max number paragraphs available

note 1) Max number paragraphs availible is returned only if the call fails

2) Memory can be expanded only if there is memory availible




file: /Techref/INT/21f/4a.htm, 0KB, , updated: 1999/2/20 10:26, local time: 2024/2/27 14:48,
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