Function 62, subfunction 0 - get version of PCI-interface.
Parameters:
- eax = 62 - function number
- bl = 0 - subfunction number
Returned value:
- eax = -1 - PCI access is disabled; otherwise
- ah.al = version of PCI-interface (ah=version, al=subversion)
- high word of eax is zeroed
Remarks:
- Previously low-level access to PCI for applications must be
enabled by subfunction 12 of function 21.
- If PCI BIOS is not supported, the value of ax is undefined.