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OS HOOK - DEVICE CLOSE

AH = 81h
BX = device ID
CX = process ID
CF clear

Return:
CF clear if successful
AH = 00h
CF set on error
AH = status (see #00496)

Note: This function should be hooked by a multitasker which wishes to keep track of device ownership; the default BIOS handler merely returns successfully

See Also: AH=80h - AH=82h

Category: Bios - Int 15h - O

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