Dell PowerEdge 2300 Service Manual - Page 24

the system BIOS. - clear bios

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RSVD2 RSVD1 450MHZ 400MHZ 350MHZ 333MHZ PASSWD ISA_CLR CARDBIOS Do not install. Reserved for future microprocessor speed. Do not install. Reserved for future microprocessor speed. Installed only if the microprocessor's internal speed is 450 MHz. Installed only if the microprocessor's internal speed is 400 MHz. Installed only if the microprocessor's internal speed is 350 MHz. Installed only if the microprocessor's internal speed is 333 MHz. Installed (default) to enable the password features. Remove the jumper and boot the computer to remove an existing password. When not installed (default), the ISA configuration settings are retained at system boot. Install the jumper and boot the computer to clear the ISA configuration settings. Then remove the jumper and use the Resource Configuration Utility to configure the system. Not installed (default) to allow normal boot operation from the system BIOS. Install the jumper only to boot the system from a BIOS expansion card. Table 1-3 lists the default IRQ line assignments. IRQ0 IRQ1 IRQ2 IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 IRQ8 Used by the system timer Used by the keyboard to signal that the output buffer is full Used by interrupt controller 1 to enable IRQ8 through IRQ15 Used by serial port 2 (COM2 and COM4) Used by serial port 1 (COM1 and COM3) Available unless used by a secondary parallel port Used by the diskette drive controller Used by the primary parallel port Used by the RTC 1-14 Dell PowerEdge 2300 Systems Service Manual

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1-14
Dell PowerEdge 2300 Systems Service Manual
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Table 1-3 lists the default IRQ line assignments.
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RSVD2
Do
not
install. Reserved for future microprocessor speed.
RSVD1
Do
not
install. Reserved for future microprocessor speed.
450MHZ
Installed only if the microprocessor’s internal speed is
450 MHz.
400MHZ
Installed only if the microprocessor’s internal speed is
400 MHz.
350MHZ
Installed only if the microprocessor’s internal speed is
350 MHz.
333MHZ
Installed only if the microprocessor’s internal speed is
333 MHz.
PASSWD
Installed (default) to enable the password features.
Remove the jumper and boot the computer to remove an
existing password.
ISA_CLR
When
not
installed (default), the ISA configuration settings
are retained at system boot.
Install the jumper and boot the computer to clear the ISA
configuration settings. Then remove the jumper and use
the Resource Configuration Utility to configure the system.
CARDBIOS
Not
installed (default) to allow normal boot operation from
the system BIOS.
Install the jumper only to boot the system from a BIOS
expansion card.
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IRQ0
Used by the system timer
IRQ1
Used by the keyboard to signal that the output buffer is full
IRQ2
Used by interrupt controller 1 to enable IRQ8 through IRQ15
IRQ3
Used by serial port 2 (COM2 and COM4)
IRQ4
Used by serial port 1 (COM1 and COM3)
IRQ5
Available unless used by a secondary parallel port
IRQ6
Used by the diskette drive controller
IRQ7
Used by the primary parallel port
IRQ8
Used by the RTC