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VT82C686B
Revision 1.71 June 9, 2000
-66-
Function 0 Registers - PCI to ISA Bridge
7HFKQRORJLHV ,QF
'HOLYHULQJ 9DOXH
'HOLYHULQJ 9DOXH
Offset 85 – Extended Function Enable ............................RW
7-6
PCI Master Grant Timeout Select
00 Disable ...................................................default
01 32 PCI Clocks
10 64 PCI Clocks
11 96 PCI Clocks
5
Reserved
........................................ always reads 0
4
Function 3 USB Ports 2-3
0
Enable.....................................................default
1
Disable
3
Function 6 Modem / Audio
0
Enable.....................................................default
1
Disable
2
Function 5 Audio
0
Enable.....................................................default
1
Disable
1
Super-I/O Configuration
0
Disable ...................................................default
1Enable
0
Super-I/O
0
Disable ...................................................default
1Enable
Offset 86 – PNP IRQ/DRQ Test 1 (Do Not Program) ... RW
Offset 87 – PNP IRQ/DRQ Test 2 (Do Not Program) ... RW