User`s guide

A
A
R
R
-
-
B
B
1
1
3
3
2
2
0
0
U
U
s
s
e
e
r
r
’
’
s
s
G
G
u
u
i
i
d
d
e
e
2-3
2.5 I/O PORT ADDRESS MAP
Hex Range Device Factory Preset
000-01F DMA controller 1 ✓
020-021 Interrupt controller 1 ✓
022-023 ALI M6117C 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
Note: The
I/O port address with the
mark “
✓
✓✓
✓” means that they are the BIOS CMOS default values. You can configure your
own settings according to this address map.