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Function 57 - PCI BIOS

 

Options:

·         eax = 57 - function number

·         ebp matches the al register in the PCI BIOS specification

·         other registers - according to the PCI BIOS specification

Return value:

·         CF not defined

·         other registers - according to the PCI BIOS specification

 

Remarks:

·         Many of the results of this function can also be achieved by calling the corresponding subfunctions of function 62.

·         The function calls a PCI32 BIOS extension, documented, for example, at http://alpha1.dyns.net/files/PCI/bios21.pdf.

·         If the BIOS does not support this extension, the behavior of the function is emulated (through analogs of the subfunctions of function 62 kernel mode).

 

Constants for registers:

  eax - SF_PCI_BIOS (57)