69
2 System Board
Assigned Device Interrupts
Although the
Setup
program can be used to change some of the settings, the
following address map is not completely BIOS dependent, but is determined
partly by the operating system. Note that some of the interrupts are
allocated dynamically.
There are three major interrupt modes available:
PIC mode:
This mode uses only the “Legacy” interrupt controllers, so that
only one processor can be supported. Because this system has dual
processor capability, this mode is not chosen by default by Windows NT.
However, during Windows NT installation, you have the possibility of
selecting this mode.
Interrupt Source
APIC Controller
Interrupt Signalling on
of
device
Input
(PIC mode)
1
1.
In PIC mode, the Interrupts signaled to the P64H are chained as INTC to the ICH.
(APIC
modes)
INTA - PCI slot 3 (64/66)
P64H
IRQ0
BT_INT
APIC bus
INTB - PCI slot 3 (64/66)
P64H
IRQ1
BT_INT
APIC bus
INTC - PCI slot 3 (64/66)
P64H
IRQ2
BT_INT
APIC bus
INTD - PCI slot 3 (64/66)
P64H
IRQ3
BT_INT
APIC bus
INTA - PCI slot 4 (64/66)
P64H
IRQ4
BT_INT
APIC bus
INTB - PCI slot 4 (64/66)
P64H
IRQ5
BT_INT
APIC bus
INTC - PCI slot 4 (64/66)
P64H
IRQ6
BT_INT
APIC bus
INTD - PCI slot 4 (64/66)
P64H
IRQ7
BT_INT
APIC bus
INTA - onboard SCSI controller
P64H
IRQ8
BT_INT
APIC bus
AGP - INTA, PCI Slot 1 - INTC, PCI
Slot 2 - INTA, PCI Slot 5 - INTB
ICH
INTA
INT
APIC bus
PCI Audio - INTA, AGP - INTB, PCI
Slot 1 - INTD, PCI Slot 2 - INTB,
PCI Slot 5 - INTC
ICH
INTB
INT
APIC bus
BT_INT, PCI Slot 1 - INTA, PCI
Slot 2 - INTC, PCI Slot 5 - INTD
ICH
INTC
INT
APIC bus
USB - INTA, PCI Slot 1 - INTB, PCI
Slot 2 - INTD, PCI Slot 5 - INTA
ICH
INTD
INT
APIC bus
Device on Primary IDE Channel
ICH
IRQ14
INT
APIC bus
Device on Secondary IDE Channel
ICH
IRQ15
INT
APIC bus
Serial Interrupt from Super I/O
ICH
SERIRQ
INT
APIC bus
Summary of Contents for Kayak XU800 Series
Page 1: ...HP Kayak XU800 PC Workstation Technical Reference Manual ...
Page 26: ...26 1 System Overview Documentation ...
Page 86: ...86 3 Interface Cards Network Cards ...
Page 106: ...106 5 HP BIOS BIOS Addresses ...
Page 130: ...130 6 Tests and Error Messages Error Message Summary ...
Page 140: ...140 7 Connectors and Sockets Rear Panel Socket Pin Layouts ...