User's Guide

C-2 IRQ and I/O Port Address
I/O Port Address
The factory-set I/O port addresses for the server are assigned as follows:
Address
*1
Chip in Use
*2
00 - 1F DMA controller
20 - 2D Interrupt controller
2E - 2F Super I/O configuration
30 - 31 Interrupt controller
34 - 35 Interrupt controller
38 - 39 Interrupt controller
3C - 3D Interrupt controller
40 - 43 Timer controller
4E - 4F Super I/O configuration
50 - 53 Timer/counter
60 Keyboard/mouse
61 NMI
62 LPC reserve
63 NMI
64 Keyboard/mouse
70 - 77 NMI/real-time clock
80 - 91 DMA controller
92 Port 92
93 - 97 DMA
A0 - A1 Interrupt controller
A4 - A5 Interrupt controller
A8 - A9 Interrupt controller
AC - AD Interrupt controller
B0 - B1 Interrupt controller
B2 - B3 Advanced power management
B4 - B5 Interrupt controller
B8 - B9 Interrupt controller
BC - BD Interrupt controller
C0 - D1 DMA controller
D2 - DF DMA controller
F0 Coprocessor error
F1 - FF Logic device configuration
170 - 177 IDE secondary bus controller
1F0 - 1F7 IDE primary bus controller
2F8 - 2FF Serial port 2
376 IDE secondary bus controller
370 - 377 (Floppy disk drive 2), IDE 2
378 -37F Parallel port
3F0 -3F5 Floppy disk drive
3F6 IDE primary bus controller
4D00 -4D1 Interrupt controller
678 -67D Paralle port
CA2 - CA3 BMC SMS interface
CA4 - CA5 BMC SMS interface
CF8 - CFB PCI configuration address/reset control (CF9)
CFC - CFF PCI configuration data
*1 Hexadecimal notation
*2 I/O port address for PCI devices can be arbitrarily assigned according to the type and number of
PCI devices.