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Appendix B. System address maps
PCI configuration space map
Figure 35 (Page 2 of 2). DMA I/O address map
Address (Hex) Description Bits Byte pointer
00C8 Channel 6, Memory Address register 00–15 Yes
00CA Channel 6, Transfer Count register 00–15 Yes
00CC Channel 7, Memory Address register 00–15 Yes
00CE Channel 7, Transfer Count register 00–15 Yes
00D0 Channels 4–7, Read Status/Write Command register 00–07
00D2 Channels 4–7, Write Request register 00–02
00D4 Channels 4–7, Write Single Mask register bit 00–02
00D6 Channels 4–7, Mode register (write) 00–07
00D8 Channels 4–7, Clear byte pointer (write) N/A
00DA Channels 4–7, Master clear (write)/temp (read) 00–07
00DC Channels 4–7, Clear Mask register (write) 00–03
00DE Channels 4–7, Write All Mask register bits 00–03
00DF Channels 5–7, 8- or 16-bit mode select 00–07
Bus number (hex) Device number
(hex)
Function number
(hex)
Description
00 00 00 Intel 82810-DC 100 Host bridge
00 01 00 Intel 84440BX VGA graphics
00 1E 00 Intel 82801 PCI–to–PCI bridge
00 1F 00 Intel 82810 PCI–to–LPC bridge
00 1F 1 IDE controller
00 1F 2 USB
00 00 3 Intel 82801 SMBus
00 1F 5 Audio multimedia
2
Upper byte of memory address register.
Appendix B. System address maps
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