◄Up► ◄Next► ◄Previous►
────────────────────────────────────────────────────────────────────────────
 
include vpicd.inc
 
mov     eax, IRQNum     ; IRQ number (not an IRQ handle!)
mov     ebx, VM         ; VM handle
VxDcall VPICD_Convert_IRQ_To_Int
 
jc      not_valid       ; carry set if IRQ number is not valid
mov     [VecNum], eax   ; interrupt vector number
 
The VPICD_Convert_IRQ_To_Int service returns the interrupt vector number
that corresponds to the specified IRQ number for the specified virtual
machine.
 
Parameter  Description
────────────────────────────────────────────────────────────────────────────
 
IRQNum     Specifies an IRQ number.
 
VM         Specifies the handle identifying the virtual machine.
 
Return Value
 
The carry flag is clear and the EAX register contains an interrupt vector
number if the IRQ number is valid. Otherwise, the carry flag is set.
 
Comments
 
Since virtual machines can map IRQ numbers of the virtual PIC to any
interrupt vector numbers, virtual devices should always explicitly check
which interrupt vector is mapped to a particular IRQ.
 
Uses
 
EAX, Flags
 
See Also
 
VPICD_Convert_Handle_To_IRQ, VPICD_Convert_Int_To_IRQ
 
 
                                      ♦