INT 1A - 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+ - GET IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. ROUTING INFORMATION (32-bit)
	AX = B18Eh
	BX = 0000h
	DS = segment/selector for 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. data
	    (real mode: F000h; 16-bit PM: physical 000F0000h; 32-bit PM: as
	    specified by BIOS32 services directory)
	ES:(E)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 at AX=B406h)
Return: CF clear if successful
	    AH = 00h
	    BX = bit map of IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. channels permanently dedicated to PCI
	    WORD ES:[DI] = size of returned data
	CF set on error
	    AH = error code (59h) (see #01243)
	    WORD ES:[DI] = required size of buffer
SeeAlso: AX=B10Fh,AX=B406h,INT 2F/AX=1684h/BX=304Ch