301467-005 Datasheet, PDF (141/426 Pages) Intel Corporation – Express Chipset

Host-PCI Express* Bridge Registers (D1:F0)
(Intel® 82915G/82915P/82915PL Only)
8.1.20
R
INTRLINE1—Interrupt Line (D1:F0)
PCI Device:
Address Offset:
Default Value:
Access:
Size:
1
3Ch
00h
R/W
8 bits
This register contains interrupt line routing information. The device itself does not use this value;
rather device drivers and operating systems use it to determine priority and vector information.
Bit
Access &
Default
Description
7:0
R/W
Interrupt Connection: This field is used to communicate interrupt line routing
00h
information. POST software writes the routing information into this register as it
initializes and configures the system. The value in this register indicates which
input of the system interrupt controller this device’s interrupt pin is connected to.
8.1.21
INTRPIN1—Interrupt Pin (D1:F0)
PCI Device:
Address Offset:
Default Value:
Access:
Size:
1
3Dh
00h
RO
8 bits
This register specifies which interrupt pin this device uses.
Bit
Access &
Default
Description
7:0
RO
Interrupt Pin: As a single function device, the PCI Express* device specifies
01h
INTA as its interrupt pin.
01h = INTA
Datasheet
141