Function 57 - PCI BIOS.
Parameters:
- eax = 57 - function number
- ebp corresponds to al in PCI BIOS specification
- other registers are set according to PCI BIOS specification
Returned value:
- CF is undefined
- other registers are set according to PCI BIOS specification
Remarks:
- Many effects of this function can be also achieved with
corresponding subfunctions of function 62.
- The function calls PCI32 BIOS extension, documented e.g. in
http://alpha1.dyns.net/files/PCI/bios21.pdf.
- If BIOS does not support this extension, its behavior is emulated
(through kernel-mode analogues of subfunctions of function 62).