INT 1A - Intel Plug-and-Play AUTO-CONFIGURATION - GET PCI IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. ROUTING TABLE AX = B406h ES:DI -> IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. 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 SeeAlso: AX=B400h,AX=B404h,AX=B10Eh,INT 2F/AX=1684h/BX=304Ch Format of Intel Plug-and-Play AUTO-CONFIGURATION PCI IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. routing header: Offset Size Description (Table 01259) 00h WORD length of IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. routing table buffer 02h DWORDDoubleword; four bytes. Commonly used to hold a 32-bit segment:offset or selector:offset address. -> IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. routing table array buffer (see #01260) Format of Intel Plug-and-Play ACFG PCI IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. 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(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. connectivity bit map for INTA# (standard ATIBM PC AT IRQs to which PCI interrupt can be routed) 05h BYTE link value for INTB# 06h WORD IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. connectivity bit map for INTB# 08h BYTE link value for INTC# 09h WORD IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. connectivity bit map for INTC# 0Bh BYTE link value for INTD# 0Ch WORD IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. connectivity bit map for INTD# 0Eh BYTE (PCI BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. 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 SeeAlso: #01259,#M0091