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Int 2F Fn 4300 - Extended Memory Specification (xms) V2+ - Installation [m]
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
Index: installation check;XMS version 2+
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