Technical Reference
43
2.3 DMA Channels
Table 10. 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 8 or 16 bits DMA controller
5 16 bits Open
6 16 bits Open
7 16 bits Open
2.4 PCI Configuration Space Map
Table 11. PCI Configuration Space Map
Bus
Number (hex)
Device
Number (hex)
Function
Number (hex)
Description
00 00 00 Memory controller of Intel 82945PL component
00 01 00 PCI Express x16 graphics port
(Note 1)
00 1B 00 Intel High Definition Audio Controller
00 1C 00 PCI Express port 1
00 1C 01 PCI Express port 2
00 1C 02 PCI Express port 3
00 1C 03 PCI Express port 4
00 1D 00 USB UHCI controller 1
00 1D 01 USB UHCI controller 2
00 1D 02 USB UHCI controller 3
00 1D 03 USB UHCI controller 4
00 1D 07 EHCI controller
00 1E 00 PCI bridge
00 1F 00 PCI controller
00 1F 01 Parallel ATA IDE controller
00 1F 02 Serial ATA controller
00 1F 03 SMBus controller
(Note 2)
00 00 PCI Conventional bus connector 1
(Note 2)
01 00 PCI Conventional bus connector 2
(Note 2)
08 00 Intel
®
82562 10/100 Mbits/sec LAN PLC
01 00 00 PCI Express video controller (if present)
(Note 1)
Notes:
1. Present only when a PCI Express x16 graphics card is installed.
2. Bus number is dynamic and can change based on add-in cards used.