Int 15/AH=80h

lup.gif ldown.gif Interrups Categories Contents

rbline.gif

OS HOOK - DEVICE OPEN (AT,XT286,PS)

AH = 80h
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=81h - AH=82h

(Table 00496) Values for status: 80h invalid command (PC,PCjr) 86h function not supported (XT)

Category: Bios - Int 15h - O

rbline.gif

lup.gif ldown.gif Interrups Categories Contents