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MIO-5271 User Manual 70

B.1 System I/O Ports

B.2 DMA Channel assignments

B.3 1st MB memory map

Table B.1: System I/O Ports

Addr. Range (Hex) Device

00-1F DMA Controller

20-2D Interrupt Controller

50-52 Timer/Counter

60-6F 8042 (keyboard controller)

70-7F Real-time clock, non-maskable interrupt (NMI) mask

80-9F DMA page register

A0-BF Motherboard resources

C0-DF DMA controller

299-29A EC HM Index port and Data port

29C-29D EC Index port and Data port

2E8-2EF Communications Port (COM4)

2F8-2FF Communications Port (COM2)

3C0-3DF Motherboard resources

3E8-3EF Communications Port (COM3)

3F8-3FF Communications Port (COM1)

4D0-4D1 Motherboard resources

Table B.2: DMA Channel assignments

Channel Function

0 Available

1 Available

2 Available

3 Available

4 Direct memory access controller

5 Available

6 Available

7 Available

Table B.3: 1st MB memory map

Addr. Range (Hex) Device

E0000h - FFFFFh System board

D0000h - DFFFFh PCI Bus

C0000h - CFFFFh System board

A0000h - BFFFFh PCI Bus

A0000h - BFFFFh Intel® HD Graphic

00000h - 9FFFFh System board

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