Микроконтроллеры

как я понял, принадлежность устр слоту определяют по devfuncnum? (pci- bios). Т.е. то что явл параметрами ф-йй записи/чтения pci: _CA_PCI_Find_Device(unsigned short devid, unsigned short venid, unsigned short index, unsigned char *busnum, unsigned char *d evfuncnum) Напр:

INT 1A - PCI BIOS v2.0c+ - FIND PCI DEVICE
AX = B102h
CX = device ID (see #00735,#00742,#00743,#00873,#00875)
DX = vendor ID (see #00732)
SI = device index (0-n)
Return: CF clear if successful
CF set on error
AH = status (00h,83h,86h) (see #00729)
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
SeeAlso: AX=B182h

--------X-1AB108-----------------------------
INT 1A - PCI BIOS v2.0c+ - READ CONFIGURATION BYTE
AX = B108h
BH = bus number
BL = device/function number (bits 7-3 device, bits 2-0 function)
DI = register number (0000h-00FFh) (see #00878)
Return: CF clear if successful
CL = byte read
CF set on error
AH = status (00h,87h) (see #00729)
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 entry were exchanged between the initial
drafts of the specification and final implementation
BUG: the Award BIOS 4.51PG (dated 05/24/96) incorrectly returns FFh for
register 00h if the PCI function number is nonzero
SeeAlso: AX=B109h,AX=B10Ah,AX=B188h,INT 2F/AX=1684h/BX=304Ch