NEC PowerMate CT manual Interrupt Requests, System Interrupts, Interrupt Level Assignments

This section provides information for configuring the system. The section includes:

!system interrupt request (IRQ) assignments

!system jumper settings

!procedures for using the Phoenix® Technologies Ltd. BIOS Setup Utility to configure the system

!description and procedures for using hard drive security for password protection of the hard drive

!descriptions and procedures for using the following utilities and applications

—FLASH Utility

—Online Documentation

—Product Recovery Program

—PowerMate Driver CD

—Intel Processor Serial Number Control Utility.

Interrupt Requests

The following paragraphs list the system interrupts (IRQs), parallel interrupts, and serial interrupts. See Section 4, “System Board,” for parallel and serial addresses. For Windows 98 and Windows 2000, a listing of hardware resources is available on the system. Click Start, point to Programs, Accessories, and System Tools, and click System Information.

System Interrupts

The system has 16 IRQs (IRQ 0 through 15) assigned to different devices (for example, printer, modem, keyboard, mouse). Initial IRQ settings are assigned at the factory, with settings dependent on the installed device(s). See “BIOS Setup Utility” in this section for information on using the utility to assign or change the interrupts.

The following table lists the IRQ settings. Assignments 0 through 15 are in order of decreasing priority.

	Interrupt Level Assignments
Interrupt
Priority	Interrupt Device*
IRQ00	System Timer
IRQ01	Standard 101/102 or MS Natural Keyboard
IRQ02	Programmable Interrupt Controller
IRQ03	Communications Port (COM2)
IRQ04	Communications Port (COM1)
IRQ05	MPU-401 Compatible
IRQ06	Standard Floppy Disk Controller
IRQ07	ECP Printer (LPT 1)

* IRQ settings may vary, depending on system configuration.

2-2 System Configuration