
36 V7865 Hardware Reference Manual
2.5.3 PCI Device Interrupt Map
The PCI bus-based external devices include the PMC sites, Ethernet controller
and the PCI-to-VME bridge. The default BIOS maps these external devices to the
PCI Interrupt Request (PIRQx) lines of the ICH2. This mapping is illustrated in
Figure 2-1 on page 37 and is defined in Table 2-5.
The device PCI interrupt lines (INTA through INTD) that are present on each
device
cannot
be modified.
Table 2-5 PCI Device Interrupt Mapping by the BIOS
Device
Component
Vendor ID
Device ID
CPU Address
Map ID Select
PCI IRQ
Arbitration
Request Line
PCI-to-VME Bridge
Tundra Tsi148
0x10E3
0x0148
AD16
INTA
REQ0
Timer/SRAM FPGA
GE Intelligent Platforms
Proprietary
0x114A
0x6504
AD21
INTE
N/A
PMC
N/A
N/A
N/A
AD16
INTA
REQ0
Ethernet Controller
Intel 82571EB
0x8086
0x105E
N/A
N/A
N/A
PCI Host Bridge
GMCH
0x8086
0x27A0
N/A
N/A
N/A
VGA Controller
GMCH
0x8086
0x27A2
N/A
N/A
N/A
Integrated Graphics
GMCH
0x8086
0x27A6
N/A
N/A
N/A
PCI-LPC Bridge
ICH7-M
0x8086
0x27B0
N/A
N/A
N/A
USB UHCI Controller
ICH7-M
0x8086
0x27C8
0x27C9
0x27CA
0x27CB
N/A
N/A
N/A
USB EHCI
ICH7-M
0x8086
0x27CC
N/A
N/A
N/A
SMBus Controller
ICH7-M
0x8086
0x27DA
N/A
N/A
N/A
PCI-E Controller
ICH7-M
0x8086
0x27D0
N/A
N/A
N/A
PCI-E Controller
ICH7-M
0x8086
0x27E0
N/A
N/A
N/A
DMI-PCI Bridge
ICH7-M
0x8086
0x2448
N/A
N/A
N/A
PCI-E Switch
PLX 8518
0x10B5
0x8518
N/A
N/A
N/A
PCI-E to PCI-X Bridge
PLX 8114
0x10B5
0x8114
N/A
N/A
N/A
Optional Vita 41
Ethernet
Intel 82571EB
0x8086
0x1060
N/A
N/A
N/A
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com