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Format of Intel Plug-and-Play ACFG PCI IRQ routing table entry [array]

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Offset Size Description

00h

BYTE

PCI bus number

01h

BYTE

PCI device number (bits 7-3)

02h

BYTE

link value for INTA# (if non-zero, wire-ORed together with any other PCI interrupts with same link value)

03h

WORD

IRQ connectivity bit map for INTA# (standard AT IRQs to which PCI interrupt can be routed)

05h

BYTE

link value for INTB#

06h

WORD

IRQ connectivity bit map for INTB#

08h

BYTE

link value for INTC#

09h

WORD

IRQ connectivity bit map for INTC#

0Bh

BYTE

link value for INTD#

0Ch

WORD

IRQ connectivity bit map for INTD#

0Eh

BYTE

(PCI BIOS v2.1+) device slot number
00h = motherboard

0Fh

BYTE

reserved

Note:

Each item in the routing table corresponds to a motherboard PCI device or PCI slot.

See Also:

#01259,#M0091