INSTALLATION .III

Jumpers

III.INSTALLATION

4.CPU Bus Frequency (FS0, FS1, FS2)

This option tells the clock generator what frequency to send to the CPU, DRAM, and 440BX AGPset. This allows the selection of the CPU’s External frequency (or BUS Clock). The BUS Clock multiplied by the BUS Ratio equals the CPU’s Internal fre- quency (the advertised CPU speed).

5.CPU Core:BUS Frequency Multiple (BF0, BF1, BF2, BF3)

This option sets the frequency multiple between the Internal frequency of the CPU and the CPU’s External frequency. These must be set in conjunction with the CPU Bus Frequency.

1

2

3

1

2

3

1

2

3

1

2

3

1

2

3

 

 

 

 

FS0

 

 

FS0

 

 

FS0

 

 

FS0

 

 

FS0

 

 

 

 

FS1

 

 

FS1

 

 

FS1

 

 

FS1

 

 

FS1

 

 

 

 

FS2

 

 

FS2

 

 

FS2

 

 

FS2

 

 

FS2

 

 

50MHz

66MHz

75MHz

83MHz

100MHz

 

 

CPU Bus Frequency

 

 

 

 

 

 

 

 

BF3

BF2

BF1 BF0

BF3

BF2

BF1 BF0

 

BF3

BF2 BF1 BF0

 

BF3

BF2 BF1

BF0

 

BF3 BF2 BF1 BF0

BF3 BF2 BF1 BF0

BF3 BF2 BF1 BF0

 

 

3

 

 

 

3

 

 

3

 

 

 

3

3

3

3

 

 

2

 

 

 

2

 

 

2

 

 

 

2

2

2

2

 

 

1

 

 

 

1

 

 

1

 

 

 

1

1

1

1

2.0x (2/1)

2.5x (5/2)

 

3.0x (3/1)

 

3.5x (7/2)

 

4.0x (4/1)

4.5x (9/2)

5.0x (5/1)

P2B-D2 CPU Settings

CPU Core:Bus Frequency Multiple

 

WARNING! Frequencies above 100MHz exceed the specifications for the onboard Intel Chipset and are not guaranteed to be stable.

Intel Pentium II Processor in an SEC cartridge (233-450MHz)

Set the jumpers by the Internal speed of your processor as follows:

Intel CPU Model

Freq.

 

 

 

 

 

(BUS Freq.)

 

(Freq.

 

Ratio)

 

 

 

 

 

 

 

 

 

 

 

 

 

Ratio

BUS F.

FS2

FS1

FS0

BF3

BF2

BF1

BF0

Pentium II

450MHz

4.5x

100MHz

[1-2] [1-2] [1-2]

[1-2]

[2-3] [1-2] [2-3]

Pentium II

400MHz

4.0x

100MHz

[1-2] [1-2] [1-2]

[1-2]

[2-3] [1-2] [1-2]

Pentium II

350MHz

3.5x

100MHz

[1-2] [1-2] [1-2]

[1-2]

[1-2] [2-3] [2-3]

Pentium II

333MHz

5.0x

66MHz

[2-3]

[1-2]

[1-2]

[1-2]

[2-3]

[2-3]

[1-2]

Pentium II

300MHz

4.5x

66MHz

[2-3]

[1-2]

[1-2]

[1-2]

[2-3]

[1-2]

[2-3]

Pentium II

266MHz

4.0x

66MHz

[2-3]

[1-2]

[1-2]

[1-2]

[2-3]

[1-2]

[1-2]

NOTES: Overclocking your processor is not recommended. It may result in a slower speed. Voltage Regulator Output Selection (VID) is not needed for the Pentium II processor because it sends a VID signal directly to the onboard power controller.

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ASUS P2B-D2 User’s Manual