NEC PowerMate CT, Service And Reference Manual

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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. If serial ports
share an interrupt, verify that hardware and software added to the system can share these
interrupts without problems.
Serial Port 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
!
hard drive
!
CD-ROM drive.
The following paragraphs list the jumpers and their factory settings.
System Board Jumper Settings
The system board has nine jumper blocks for configuring the system for particular system
requirements. Use the following figure to locate the jumper blocks on the system board. See the
table after the figure for jumper descriptions and factory settings.
Procedures for setting the jumpers are included in Section 4, “System Board.” Specifications for
the system board are given in Section 9, “Specifications.”
Jumpers are set correctly at the factory for the system configuration.
Only change or check the appropriate jumper settings. Otherwise, keep the jumpers at their
factory settings.