IBM 6278 space, B. System address maps, configuration, Appendix, Address Hex, Description, Bits

				Appendix		B. System address maps
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 register00–07
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

PCI	configuration	space		map
Bus	number (hex)		Device	number	Function number	Description
			(hex)		(hex)
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 maps39