NS170 User Guide - Appendix B: IRQ and I/O Port Adresses
B - 2
I/O Port Address
* Hexadecimal notation
Table B - 4: I/O Port Address
Address*
Chip in Use
00 – 0F
DMA1 controller
20 – 21
Interrupt controller 1
2E – 2F
Super I/O configuration
40 – 43
Timer 1
4E
－
4F
(Super I/O configuration 2)
60 Keyboard/mouse
61
Non-maskable interrupt
64
Keyboard/mouse
70 - 73
Real time clock, Non-maskable interrupt
80 – 8F
DMA1, DMA2
92
Port 92
A0 – A1
Interrupt controller 2
B2 – B3
Advanced power management
C0 – CF
DMA controller 2
F0
Coprocessor
170 – 177
(IDE secondary bus)
1F0 – 1F7
(IDE primary bus)
2F8 – 2FF
Serial port 2
370 – 377
(Floppy disk controller 2), IDE controller 2
3BF – 3DF
VGA
3F0 – 3F7
Floppy disk controller1, IDE controller 1
3F8 - 3FF
Serial port 1
4D0 - 4D1
Interrupt controllers 1 and 2
CF8 – CFB
PCI configuration address/reset control
CFC - CFF
PCI configuration data
