AR-B1380/AR-B1380A User’ s Guide
Page 9
2.4.1 I/O Port Address Map
Hex Range
Device
Factory Preset
000-01F
DMA controller 1
3
020-021
Interrupt controller 1
3
022-023
ALI M6117 chipset address
3
040-04F
Timer 1
3
050-05F
Timer 2
3
060-06F
8042 keyboard/controller
3
070-071
Real-time clock (RTC), non-maskable interrupt
(NMI)
3
080-09F
DMA page registers
3
0A0-0A1
Interrupt controller 2
3
0C0-0DF
DMA controller 2
3
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
3
201
Game port
208-20A
EMS register 0
218-21A
EMS register 1
278-27F
Parallel printer port 2 (LPT 2)
2E8-2EF
Serial port 4 (COM 4)
2F8-2FF
Serial port 2 (COM 2)
3
300-31F
Prototype card/streaming type adapter
320-33F
LAN adapter
378-37F
Parallel printer port 1 (LPT 1)
380-38F
SDLC, bisynchronous
3A0-3AF
Bisynchronous
3B0-3BF
Monochrome display and printer port 3 (LPT 3)
3C0-3CF
EGA/VGA adapter
3D0-3DF
Color/graphics monitor adapter
3E8-3EF
Serial port 3 (COM 3)
3F0-3F7
Floppy controller
3F8-3FF
Serial port 1 (COM 1)
s
Table 2-2 I/O Port Address Map
NOTE: The I/O address marked “
3
” or “
s
” is the BIOS default settings. “
3
” means the I/O address is not adjustable;
“
s
” means it is adjustable in the BIOS setup.
Summary of Contents for AR-B1380
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