ncr/doc/Old Models/Technical Manuals/7453_... - Alsys Data

4-48 Chapter 4: Hardware Service4-Port RS-232 Board PortsPortCOM7 –COM10I/O Base Address(686 Board)I/O Base Address(Series 4000 Board)Interrupt(IRQ)Varies* Varies* Varies**These resources are automatically assigned by the PCI BIOS.Default I/O Address and Interrupt Settings for Windows 95/NTWindows may force COM1, COM2, COM3, and COM4 to standardaddresses as shown in the columns labeled "I/O Base Address." In thatcase, it is recommended that additional ports start with COM5.System PortsPortI/O Base Address(686 Board)I/O Base Address(Series 4000 Board)COM1 03F8–03FF 03F8-03FF 4COM2 02F8–02FF 02F8-02FF 3Interrupt(IRQ)COM3 03E8-03EF 0220-0227 VariesCOM4 02E8-02EF 0228-022F Varies4-Port RS-232 Board PortsPortCOM5 –COM8I/O Base Address(686 Board)I/O Base Address(Series 4000 Board)Interrupt(IRQ)Varies* Varies* Varies**These resources are automatically assigned by the PCI BIOS.