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AX = 4300h
Return:
AL = 80h XMS driver installed AL <> 80h no driver
Notes: XMS gives access to extended memory and noncontiguous/nonEMS memory above 640K. This installation check DOES NOT follow the format used by other software
See Also: AX=4310h - AX=1687h - INT 67/AH=40h - @xxxxh:xxx
Category: Memory Management - Int 2Fh - E
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