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2-4 System Configuration
Serial Port Interrupts
The interrupts for serial port 1 and serial port 2 are given in the following table.
Any interrupts used for the built-in serial ports are not available for ISA parallel
ports. Also, if serial ports share an interrupt, verify that hardware and software
added to the system can share these interrupts without problems.
Serial Port 1 and Serial Port 2 Interrupts
Port Interrupt
COM1 IRQ04
COM2* IRQ03
COM3 IRQ04
COM4 IRQ03
COM1 IRQ03
COM2 IRQ04
COM3 IRQ03
COM4 IRQ04
Jumper Settings
Jumpers on the boards and devices in the system are used to set the system
configuration. Boards and devices using jumpers include:
system board
CD-ROM drive
fax/modem board
Zip drive
tape backup unit.
The following paragraphs list the jumpers and their factory settings.
Note
:
Jumpers are set correctly at the factory for the
system configuration. If a jumper change is required, change
only the setting for that condition (see Section 4 for
procedures on setting jumpers).