Int1Ah AX = B102h(搜尋PCI裝置) -- BIOS Int1Ah

FIND PCI DEVICE

Input:
    AX = B102h
    CX = device ID
    DX = vendor ID (Intel:0x8086, MRVL:0x1B4B, Acer:0x1025, AMI:0x101E, Phoenix:0x100A)
    SI = device index (0-n)
Return:
    CF clear if successful
    CF set on error
    AH = status (00h,83h,86h)  (see Format of floppy format address field buffer entry)
        00h successful
        BH = bus number
        BL = device/function number (bits 7-3 device, bits 2-0 func)
    EAX, EBX, ECX, and EDX may be modified

all other flags (except IF) may be modified

Notes:   

• this function may require up to 1024 byte of stack; it will not enable interrupts if they were disabled before making the call
• device ID FFFFh may be reserved as a wildcard in future implementations
• the meanings of BL and BH on return were exchanged between the initial
• drafts of the specification and final implementation
• all devices sharing a single vendor ID and device ID may be enumerated by incrementing SI from 0 until error 86h is returned