Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

                                                     ◄Up► ◄Next► ◄Previous►
────────────────────────────────────────────────────────────────────────────
 
include vpicd.inc
 
mov     eax, IRQHand        ; IRQ handle
VxDcall VPICD_Force_Default_Behavior
 
The VPICD_Force_Default_Behavior service unvirtualizes an IRQ. This allows a
virtual device to remove virtualization of an IRQ when it processes a
System_Exit message.
 
Parameter  Description
────────────────────────────────────────────────────────────────────────────
 
IRQHand    Specifies the handle of the IRQ to unvirtualize.
 
Return Value
 
This service has no return value.
 
Comments
 
This service invalidates the IRQ handle. After calling this service, a
virtual device must not attempt to use the IRQ handle.
 
Uses
 
Flags
 
See Also
 
VPICD_Force_Default_Owner
 
 
                                      ♦