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 – CF7 DMA1 controller
20 – 21 Interrupt controller 1
40 – 43, 50 – 53 Timer 1
60 Keyboard/mouse
61 System speaker
64 Keyboard/mouse
70 – 71 Real time clock, Non-maskable interrupt
81 – 8F, C0 – DF DMA1, DMA2
A0 – A1 Interrupt controller 2
F0 – FE Coprocessor
170 – 177 (IDE secondary bus)
1F0 – 1F7 (IDE primary bus)
3B0 – 3BB, 3C0 – 3DF VGA
3F0 – 3F7 Floppy disk controller1, IDE controller 1
3F8 – 3FF Serial port 1
378 – 37F Printer port
4000 – 403F Network port
E000 – EFFF PCIe root port
*1 Hexadecimal notation
*2 The I/O port address of a PCI device is set according to its type and number.
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