Register and Memory Mapping
9.3.2
Variable I/O Decode Ranges
Table 9-3 shows the Variable I/O Decode Ranges. They are set using Base Address
Registers (BARs) or other configuration bits in the various PCI configuration spaces.
The PNP software (PCI or ACPI) can use their configuration mechanisms to set and
adjust these values.
Warning:
The Variable I/O Ranges should not be set to conflict with the Fixed I/O Ranges.
Unpredictable results if the configuration software allows conflicts to occur. The ICH10
does not perform any checks for conflicts.
Table 9-3.
Variable I/O Decode Ranges
Size
Range Name
Mappable
Target
(Bytes)
ACPI
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
96 Bytes above ACPI Base
64
Power Management
IDE Unit
IDE Bus Master
Native IDE Command
Native IDE Control
USB UHCI Controller #1
USB UHCI Controller #2
USB UHCI Controller #3
USB UHCI Controller #4
USB UHCI Controller #5
USB UHCI Controller #6
SMBus
16
8
IDE Unit
4
IDE Unit
32
USB Unit 1
32
USB Unit 2
32
USB Unit 3
32
USB Unit 4
32
USB Unit 5
32
USB Unit 6
32
SMB Unit
TCO
32
TCO Unit
GPIO
Anywhere in 64 KB I/O Space
3 Ranges in 64 KB I/O Space
8 Ranges in 64 KB I/O Space
8 Ranges in 64 KB I/O Space
2 Ranges in 64 KB I/O Space
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
Anywhere in 64 KB I/O Space
64
GPIO Unit
Parallel Port
8
LPC Peripheral
LPC Peripheral
LPC Peripheral
LPC Peripheral
LAN Unit
Serial Port 1
8
Serial Port 2
8
Floppy Disk Controller
LAN
8
32
LPC Generic 1
4 to 256
4 to 256
4 to 256
4 to 256
1 to 256
LPC Peripheral
LPC Peripheral
LPC Peripheral
LPC Peripheral
Trap on Backbone
LPC Generic 2
LPC Generic 3
LPC Generic 4
I/O Trapping Ranges
NOTE:
1.
Decode range size determined by D31:F0:ADh:bits 5:4
298
Datasheet
INTEL [ INTEL ]
