Dell 100-Mbps manual Interrupt Assignments, Jumper Descriptions

Table 1-2. Jumper Descriptions

		Default
Jumper	Description	Setting
PSWD	Password enable/disable.	Installed (password feature
	Jumper installed, activates	enabled)
	password feature.
BIOS	Used for internal Dell	Not installed (reserved, do not
	debug tool.	change)
RSRVD4	Reserved.	Not installed (reserved, do not
RSRVD3		change)
RSRVD2
RSRVD1
200MHZ	Microprocessor speed.	Installed if the micro-
		processor’s internal speed is
		200 MHz, or else not
		installed
180MHZ	Microprocessor speed.	Installed if the micro-
		processor’s internal speed is
		180 MHz, or else not
		installed

Interrupt Assignments

	Table 1-3. Interrupt Assignments
IRQ Line	Used By/Available
IRQ0	Generated by system timer.
IRQ1	Generated by keyboard controller to indicate that keyboard’s out-
	put buffer is full.
IRQ2	Generated internally by interrupt controller to enable IRQ8
	through IRQ15.
IRQ3	Generated by super I/O controller to indicate that device con-
and	nected to corresponding serial port requires service (IRQ3 for
IRQ4	COM2 or COM4; IRQ4 for COM1 or COM3).
IRQ5	Available for use by expansion card unless this IRQ line is used
	by secondary parallel port.
IRQ6	Generated by super I/O controller to indicate that diskette or tape
	drive requires service.
IRQ7	Generated by super I/O controller to indicate that device con-
	nected to parallel port requires service.

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