1 i/o port address map – Sony DX4 User Manual
Page 11
AR-B1474 User¡
¦s Guide
2-3
2.3.1 I/O Port Address Map
Hex Range
Device
000-01F
DMA controller 1
020-021
Interrupt controller 1
022-023
M1429 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
210-213
SSD
214-215
Watchdog
218-21A
EMS register 1
278-27F
Parallel printer port 3 (LPT 3)
290-293
SSD
294-295
Watchdog
2E8-2EF
Serial port 4 (COM 4)
2F8-2FF
Serial port 2 (COM 2)
310-313
SSD
314-315
Watchdog
378-37F
Parallel printer port 2 (LPT 2)
380-38F
SDLC, bisynchronous 2
390-393
SSD
394-395
Watchdog
3A0-3AF
Bisynchronous 1
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