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3 i/o port address map – Acrosser AR-B9612 User Manual

Page 8

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AR-B9612 User’s Guide
2-3

2.3 I/O PORT ADDRESS MAP

Hex Range

Device

000-01F DMA controller 1
020-021 Interrupt controller 1
022-023 ALI M6117 chipset address
040-04F Timer 1
050-05F Timer 2
060-06F 8042 keyboard/controller
070-071 Real-time clock (RTC), non-maskable interrupt (NMI)
080-09F DMA page registers

0A0-0A1 Interrupt controller 2

0C0-0DF DMA controller 2

0F0

Clear Math Co-processor

0F1

Reset Math Co-processor

0F8-0FF Math Co-processor

170-178 Fixed disk 1

1F0-1F8 Fixed disk 0

201

Game port

208-20A EMS register 0
218-21A EMS register 1
278-27F Parallel printer port 3 (LPT 3)

2E8-2EF Serial port 4 (COM 4)

2F8-2FF Serial port 2 (COM 2)

300-31F Prototype card/Streaming Type Adapter
378-37F Parallel printer port 2 (LPT 2)
380-38F SDLC, bisynchronous

3A0-3AF Bisynchronous
3B0-3BF Monochrome display and printer port 1 (LPT 1)

3C0-3CF EGA/VGA adapter
3D0-3DF Color/Graphics monitor adapter

3E8-3EF Serial port 3 (COM 3)

3F0-3F7 Diskette controller
3F8-3FF Serial port 1 (COM 1)

Table 2-2 I/O Port Address Map