Iii. installation, 16 asus hx97 user’s manual, Jumpers) iii. inst alla tion – Asus Pentium Motherboard HX97 User Manual
Page 16
16
ASUS HX97 User’s Manual
III. INSTALLATION
4. CPU External (BUS) Frequency Selection (FS0, FS1, FS2)
These jumpers 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 advertised CPU speed).
5. CPU to BUS Frequency Ratio (BF0, BF1)
These jumpers set the frequency ratio between the Internal frequency of the CPU
and the External frequency (called the BUS Clock) within the CPU. These must
be set together with the above jumpers CPU External (BUS) Frequency Selection.
R
CPU External Clock (BUS) Frequency Selection
CPU : BUS Frequency Ratio
50MHz
FS1
1
2
3
FS2
FS0
55MHz
FS1
1
2
3
FS2
FS0
60MHz
FS1
1
2
3
FS2
FS0
66MHz
FS1
1
2
3
FS2
FS0
3.0x(3/1)
3.0x(3/1)
4.0x(4/1)
BF1
BF0
2.5x(5/2)
2.5x(5/2)
1.0x(1/1)
BF1
BF0
2.0x(2/1)
2.0x(2/1)
2.0x(2/1)
BF1
BF0
1.5x(3/2)
3.5X(7/2)
3.0x(3/1)
BF1
BF0
Complete Names:
Intel Pentium P54C, P55C
AMD K5, K6
Cyrix M1, M2
P54C/K5
P55C/K6/M2
Cyrix M1
Set the jumpers by the Internal speed of the Intel, AMD, or Cyrix CPU as follows:
(BUS Frequency)
(Freq. Ratio)
CPU Model
Freq.
Ratio
BUS Freq.
FS0
FS1
FS2
BF1
BF0
Intel Pentium
200MHz
3.0x
66MHz
[2-3] [1-2] [2-3]
[2-3] [1-2]
Intel Pentium
166MHz
2.5x
66MHz
[2-3] [1-2] [2-3]
[2-3] [2-3]
Intel Pentium
150MHz
2.5x
60MHz
[2-3] [2-3] [1-2]
[2-3] [2-3]
Intel Pentium
133MHz
2.0x
66MHz
[2-3] [1-2] [2-3]
[1-2] [2-3]
Intel Pentium
120MHz
2.0x
60MHz
[2-3] [2-3] [1-2]
[1-2] [2-3]
Intel Pentium
100MHz
1.5x
66MHz
[2-3] [1-2] [2-3]
[1-2] [1-2]
Intel Pentium
90MHz
1.5x
60MHz
[2-3] [2-3] [1-2]
[1-2] [1-2]
Intel Pentium
75MHz
1.5x
50MHz
[2-3] [2-3] [2-3]
[1-2] [1-2]
AMD-K6-PR233
233MHz
3.5x
66MHz
[2-3] [1-2] [2-3]
[1-2] [1-2]
AMD-K6-PR200
200MHz
3.0x
66MHz
[2-3] [1-2] [2-3]
[2-3] [1-2]
AMD-K6-PR166
166MHz
2.5x
66MHz
[2-3] [1-2] [2-3]
[2-3] [2-3]
AMD-K5-PR133
100MHz
1.5x
66MHz
[2-3] [1-2] [2-3]
[1-2] [1-2]
AMD-K5-PR120
90MHz
1.5x
60MHz
[2-3] [2-3] [1-2]
[1-2] [1-2]
AMD-K5-PR100
100MHz
1.5x
66MHz
[2-3] [1-2] [2-3]
[1-2] [1-2]
AMD-K5-PR90
90MHz
1.5x
60MHz
[2-3] [2-3] [1-2]
[1-2] [1-2]
AMD-K5-PR75
75MHz
1.5x
50MHz
[2-3] [2-3] [2-3]
[1-2] [1-2]
*Cyrix 166+
133MHz
2.0x
66MHz
[2-3] [1-2] [2-3]
[1-2] [2-3]
*NOTE:
Only Cyrix Rev 2.7 or later is supported on this motherboard. See next page for revision identifi-
cation. Bootup screen will show 6x86-P166+ with the Cyrix 166+ installed on this motherboard.
(Jumpers)
III. INST
ALLA
TION