Technical Reference
45
Table 14. I/O Map (continued)
Address (hex)
Size
Description
64 contiguous bytes starting on a 64-byte divisible boundary
D810E2CA3 Board resource
256 contiguous bytes starting on a 256-byte divisible
boundary
AC ’97 audio mixer
64 contiguous bytes starting on a 64-byte divisible boundary
ICH2 LAN controller
256 contiguous bytes starting on a 256-byte divisible
boundary
AC ‘97 modem mixer
64 contiguous bytes starting on a 64-byte divisible boundary
AC ‘97 audio mixer
32 contiguous bytes starting on a 32-byte divisible boundary
ICH2 (USB controller #1)
32 contiguous bytes starting on a 32-byte divisible boundary
ICH2 (USB controller #2)
16 contiguous bytes starting on a 16-byte divisible boundary
ICH2 (SMB)
4096 contiguous bytes starting on a 4096-byte divisible
boundary
Intel 82801BA PCI bridge
64 contiguous bytes starting on a 64-byte divisible boundary
Intel 82562ET LAN controller (optional)
Notes:
1.
Default, but can be changed to another address range.
2.
Dword access only
3.
Byte access only
✏
NOTE
Some additional I/O addresses are not available due to ICH2 address aliassing.
For information about
Refer to
ICH2 addressing
Section 1.2, page 16
2.4 DMA
Channels
Table 15. DMA Channels
DMA Channel Number
Data Width
System Resource
0
8 or 16 bits
Open
1
8 or 16 bits
Parallel port
2
8 or 16 bits
Diskette drive
3
8 or 16 bits
Parallel port (for ECP or EPP)
4 DMA
controller
5 16
bits
Open
6 16
bits
Open
7 16
bits
Open