%! Detailed register description file for PCICFG.EXE by Ralf Brown
%!
%! Filename 80867112.PCI = Vendor 8086h, Device 7112h
%!    Intel 82731AB PIIX4 USB Host Controller
%! Last Edit 31 Dec 1997 by Andy Sawyer
%!
%! Reference : Intel document 29056201.PDF
%! "82371AB PCI-TO-ISA/IDE XCELERATOR (PIIX4)"
%!
%! See also : 80867110.PCI,80867111.PCI,80867113.PCI
%!

!begin
Intel 82371AB PIIX4 USB Host Controller registers in detail:   [by Andy Sawyer]

 USB Specification:  %[60:7-4]d.%[60:3-0]d
 Legacy Support:
   A20GATE Pass-through:  %[C0:5]ed %[C0:15]|;seq. ended| %[C0:6]|;in progress|
   USB PIRQ               %[C0:13]ed
   USB IRQ Status         %[C0:12]|in;|active
   Trap caused by:        %[C0:11]|;0064 write| %[C0:10]|;0064 read| %[C0:9]|;0060 write| %[C0:8]|;0060 read|
   SMI Enable:            %[C0:7]|;A20GATE| %[C0:4]|;USB IRQ| %[C0:3]|;0064 write| %[C0:2]|;0064 read| %[C0:1]|;0060 write| %[C0:0]|;0060 read|

 Misc. Status:
   RTC Index Read is %[FF:4]ed

!end

%! end of file