Int 1A Fn B406  - Intel Plug-and-play Auto-configuration - Get Pci Irq Ro  [X]

   AX = B406h
   ES:DI -> IRQ routing table header (see #0955)

Return: CF clear if successful
       AX = 0000h
       WORD ES:[DI] = size of returned data
   CF set on error
       AX = error code (0059h) (see #0939)
       WORD ES:[DI] = required size of buffer

See Also: AX=B400h,AX=B404h,AX=B10Eh,INT 2F/AX=1684h/BX=304Ch

Format of Intel Plug-and-Play AUTO-CONFIGURATION PCI IRQ routing header:
Offset Size    Description (Table 0955)
 00h   WORD    length of IRQ routing table buffer
 02h   DWORD   -> IRQ routing table array buffer (see #0956)

Format of Intel Plug-and-Play ACFG PCI IRQ routing table entry [array]:
Offset Size    Description (Table 0956)
 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: #0955,#M086