HP A2Y15AV Manual Do Utilizador

102

Datasheet, Volume 2

This register contains interrupt line routing information. The device itself does not use 
this value; rather, it is used by device drivers and operating systems to determine 
priority and vector information.

This register specifies which interrupt pin this device uses.

7:0

RW

00h

Uncore

Interrupt Connection (INTCON)
This field is used to communicate interrupt line routing 

information. 
BIOS Requirement: POST software writes the routing 

information into this register as it initializes and configures the 

system. The value indicates to which input of the system 

interrupt controller this device's interrupt pin is connected. 

7:3

RO

00h

Uncore

2:0

RW-O

1h

Uncore

Interrupt Pin (INTPIN)
As a multifunction device, the PCI Express device may specify 

any INTx (x=A,B,C,D) as its interrupt pin.
The Interrupt Pin register indicates which interrupt pin the device 

(or device function) uses. 
A value of 1 corresponds to INTA# (Default)
A value of 2 corresponds to INTB#
A value of 3 corresponds to INTC# 
A value of 4 corresponds to INTD# 
Devices (or device functions) that do not use an interrupt pin 

must put a 0 in this register. 
The values 05h through FFh are reserved. 
This register is write once. BIOS must set this register to select 

the INTx to be used by this root port.