Default I/O Address And Interrupt Settings For Win95/Nt - NCR 7452 User Manual

3-82 Chapter 3: Installing Optional Hardware Features

Default I/O Address and Interrupt Settings for Win95/NT

Windows may force COM1, COM2, COM3, and COM4 to standard
addresses as shown in the columns labeled "I/O Base Address." In that
happens, start additional ports with COM5.
System Ports
Port I/O Base Address
(3XXX Board)
COM1 03F8–03FF
COM2 02F8–02FF
COM3 03E8-03EF
COM4 02E8-02EF
4-Port RS-232 Board Ports
Port I/O Base Address
(3XXX Board)
COM5 – Varies*
COM8
* These resources are automatically assigned by the PCI BIOS.
I/O Base Address Interrupt
(Series 4000 Board) (IRQ)
03F8-03FF 4
02F8-02FF 3
0220-0227 Varies
0228-022F Varies
I/O Base Address
(Series 4000 Board)
Varies*
Interrupt
(IRQ)
Varies*