Asus MEL-B - Manual (Page 16)

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]