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AX = B406h ES:DI -> IRQ routing table header (see #01259)
Return:
CF clear if successful AX = 0000h WORD ES:[DI] = size of returned data CF set on error AX = error code (0059h) (see #01243) WORD ES:[DI] = required size of buffer
See Also:
AX=B400h - AX=B404h - AX=B10Eh - INT 2F/AX=1684
Format of Intel Plug-and-Play AUTO-CONFIGURATION PCI IRQ routing header:
Offset Size Description (Table 01259)
00h WORD length of IRQ routing table buffer
02h DWORD -> IRQ routing table array buffer (see #01260)
Format of Intel Plug-and-Play ACFG PCI IRQ routing table entry [array]:
Offset Size Description (Table 01260)
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
Category:
Expansion Bus Bios
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Int 1Ah
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I
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