HP Workstation x1000 hp workstation x1000 - technical reference guide - Page 73

assigned device interrupts

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system board assigned device interrupts assigned device interrupts i/o controller hub interrupts Device AC'97 audio controller USB controller AGP slot PCI 32-bit slot #1 PCI 32-bit slot #2 PCI 32-bit slot #3 Extender Reference Name AD1885 - AGP PCI 1 PCI 2 PCI 3 REQ/ GNT Chip-set Interrupt Connection INTA INTB INTC INTD 4 - A - - (ICH2) - A - - - - A B - - 0 F (ICH2) G H E 2 G (ICH2) H E F 3 C (ICH2) D A B 4 (ICH2) interrupt controllers The system has an interrupt controller that is equivalent in function to that of two 82C59 interrupt controllers. The following table shows how the interrupts are connected to the APIC controller. The IRQs are numbered sequentially, starting with the master controller, and followed by the slave (both of 82C59 type). Although you can use the Setup program to change some of the settings, the following address map isn't completely BIOS dependent but is Chapter 2 73

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system board
assigned device interrupts
Chapter 2
73
assigned device interrupts
i/o controller hub interrupts
interrupt controllers
The system has an interrupt controller that is equivalent in function to
that of two 82C59 interrupt controllers. The following table shows how
the interrupts are connected to the APIC controller. The IRQs are
numbered sequentially, starting with the master controller, and followed
by the slave (both of 82C59 type).
Although you can use the Setup program to change some of the settings,
the following address map isn’t completely BIOS dependent but is
Device
Reference
Name
REQ/
GNT
Chip-set Interrupt Connection
INTA
INTB
INTC
INTD
AC’97 audio
controller
AD1885
4
(ICH2)
A
USB controller
A
AGP slot
AGP
A
B
PCI 32-bit slot #1
PCI 1
0
(ICH2)
F
G
H
E
PCI 32-bit slot #2
PCI 2
2
(ICH2)
G
H
E
F
PCI 32-bit slot #3
PCI 3
3
(ICH2)
C
D
A
B
Extender
4
(ICH2)