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52 MI988
User’s Manual
A. I/O Port Address Map
Each peripheral device in the system is assigned a set of I/O port
addresses which also becomes the identity of the device. The following
table lists the I/O port addresses used.
Address Device Description
0x00000A00-0x00000A0F Motherboard resources
0x00000A10-0x00000A1F Motherboard resources
0x00000A20-0x00000A2F Motherboard resources
0x00000A30-0x00000A3F Motherboard resources
0x00000A40-0x00000A4F Motherboard resources
0x00000070-0x00000071 System CMOS/real time clock
0x0000D000-0x0000DFFF PCI Express Root Port
0x0000D000-0x0000DFFF AMD Radeon(TM) Vega 8 Graphics
0x000003F8-0x000003FF Communications Port (COM1)
0x000002F8-0x000002FF Communications Port (COM2)
0x000003E8-0x000003EF Communications Port (COM3)
0x000002E8-0x000002EF Communications Port (COM4)
0x00000238-0x0000023F Communications Port (COM5)
0x00000338-0x0000033F Communications Port (COM6)
0x00000020-0x00000021 Programmable interrupt controller
0x000000A0-0x000000A1 Programmable interrupt controller
0x00000000-0x000003AF PCI Express Root Complex
0x00000000-0x000003AF Direct memory access controller
0x000003E0-0x00000CF7 PCI Express Root Complex
0x000003B0-0x000003DF PCI Express Root Complex
0x00000D00-0x0000FFFF PCI Express Root Complex
0x0000F000-0x0000FFFF PCI Express Root Port
0x0000E000-0x0000EFFF PCI Express Root Port
0x00000040-0x00000043 System timer
0x00000010-0x0000001F Motherboard resources