beautypg.com

Iii. hardware setup, 16 asus mel-b user’s manual, Mel-b cpu bus frequency selection – Asus MEL-B User Manual

Page 16: Mel-b cpu : bus frequency multiple

background image

16

ASUS MEL-B User’s Manual

III. HARDWARE SETUP

Motherboard Settings

III. H/W SETUP

3. CPU External (BUS) Frequency Selection (DIP1, 2, 3)

These DIP switches tell the clock generator what frequency to send to the CPU.
These allow the selection of the CPU’s External frequency (or BUS Clock). The
BUS Clock times the BUS Ratio equals the CPU's Internal frequency (the ad-
vertised CPU speed).

MEL-B CPU BUS Frequency Selection

CPU/AGP
PCI BUS

66.8MHz
33.4MHz

ON

123

456789

1

0

60MHz
30MHz

ON

123

456789

1

0

ON

123

456789

1

0

83.3MHz

41MHz

68.4MHz
34.2MHz

ON

123

456789

1

0

75MHz

37.5MHz

ON

123

456789

1

0

50MHz
25MHz

ON

123

456789

1

0

4. CPU to BUS Frequency Multiple (DIP7, 8, 9, 10)

These DIP switches set the frequency multiple between the Internal frequency
of the CPU and the External frequency (called the BUS Clock) within the CPU.

MEL-B CPU : BUS Frequency Multiple

8.0x(8/1)

ON

123456

789

1

0

7.5x(15/2)

ON

123456

789

1

0

7.0x(7/1)

ON

123456

789

1

0

6.5x(13/2)

ON

123456

789

1

0

ON

123456

789

1

0

6.0x(6/1)

5.0x(5/1)

ON

123456

789

1

0

4.5x(9/2)

ON

123456

789

1

0

4.0x(4/1)

ON

123456

789

1

0

3.5x(7/2)

ON

123456

789

1

0

ON

123456

789

1

0

3.0x(3/1)

5.5x(11/2)

ON

123456

789

1

0

Set the DIP switches by the Internal speed of your processor as follows:

(BUS Frequency)

(Frequency Multiple)

Intel CPU Model

Speed

Mult

Freq.

DIP1

DIP2

DIP3

DIP7

DIP8

DIP9 DIP10

Celeron (PPGA)

400MHz

6.0x

66MHz

[OFF]

[OFF]

[OFF]

[ON]

[ON]

[ON]

[OFF]

Celeron (PPGA)

366MHz

5.5x

66MHz

[OFF]

[OFF]

[OFF]

[OFF]

[OFF] [OFF]

[ON]

Celeron (PPGA)

333MHz

5.0x

66MHz

[OFF]

[OFF]

[OFF]

[ON]

[OFF] [OFF]

[ON]

Celeron (PPGA)

300MHz

4.5x

66MHz

[OFF]

[OFF]

[OFF]

[OFF]

[ON]

[OFF]

[ON]