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Int 1A Fn B103 - Intel PCi BIOS V2.0c - Find Pci Class Code [X]
AX = B103h
ECX = class code (bits 23-0)
SI = device index (0-n)
Return: CF clear if successful
CF set on error
AH = status
00h successful
BL = bus number
BH = device/function number (bits 7-3 device, bits 2-0 func)
86h device not found
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
the meanings of BL and BH on return may be exchanged in future
implementations
all devices sharing the same Class Code may be enumerated by
incrementing SI from 0 until error 86h is returned
See Also: AX=B183h
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