Asus TX97 User Manual page 18

5. 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).
6. 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.
Complete Names:
Intel Pentium P54C
Pentium P55C-MMX
AMD K5, K6
IBM/Cyrix 6x86(L) (M1)
IBM/Cyrix 6x86MX(M2)
Set the jumpers by the Internal speed of the Intel, AMD, IBM, or Cyrix CPU as follows:
CPU Model
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
AMD-K6-PR233
AMD-K6-PR200
AMD-K6-PR166
AMD-K5-PR133
AMD-K5-PR120
AMD-K5-PR100
AMD-K5-PR90
AMD-K5-PR75
IBM/Cyrix 6x86MX-PR233 200MHz
IBM/Cyrix 6x86MX-PR200 166MHz
IBM/Cyrix 6x86MX-PR166 150MHz
*IBM/Cyrix 6x86-PR166+ 133MHz
*NOTE: The only IBM or Cyrix 6x86 (M1) Rev 2.7 or later is supported on this motherboard (see previous
page). Bootup screen will show 6x86-P166+ with the Cyrix PR166+ installed on this motherboard.
18
III. INSTALLATION
1
2
3
50MHz 55MHz
CPU External Clock (BUS) Frequency Selection
1
2
3
1.5x(3/2)
P54C/K5
3.5x(7/2)
P55C/K6/MX
3.0x(3/1)
IBM/Cyrix 6x86
3.0x(3/1)
IBM/Cyrix 6x86L
CPU : BUS Frequency Ratio
Freq. Ratio BUS F.
233MHz 3.5x 66MHz
200MHz 3.0x 66MHz
166MHz 2.5x 66MHz
150MHz 2.5x 60MHz
133MHz 2.0x 66MHz
120MHz 2.0x 60MHz
100MHz 1.5x 66MHz
90MHz 1.5x 60MHz
75MHz 1.5x 50MHz
233MHz 3.5x 66MHz
200MHz 3.0x 66MHz
166MHz 2.5x 66MHz
100MHz 1.5x 66MHz
90MHz 1.5x 60MHz
100MHz 1.5x 66MHz
90MHz 1.5x 60MHz
75MHz 1.5x 50MHz
3.0x 66MHz
2.5x 66MHz
2.5x 60MHz
2.0x 66MHz
ASUS TX97 User's Manual
1 1 1
2 2 2
3 3 3
75MHz
60MHz 66MHz
1 1
2 2
3 3
2.0x(2/1) 2.5x(5/2) 3.0x(3/1)
2.0x(2/1) 2.5x(5/2) 3.0x(3/1)
2.0x(2/1) 1.0x(1/1)
2.0x(2/1) 2.0x(2/1)
(BUS Freq.)
FS0 FS1 FS2
[1-2] [2-3] [2-3]
[1-2] [2-3] [2-3]
[1-2] [2-3] [2-3]
[2-3] [2-3] [2-3]
[1-2] [2-3] [2-3]
[2-3] [2-3] [2-3]
[1-2] [2-3] [2-3]
[2-3] [2-3] [2-3]
[2-3] [1-2] [2-3]
[1-2] [2-3] [2-3]
[1-2] [2-3] [2-3]
[1-2] [2-3] [2-3]
[1-2] [2-3] [2-3]
[2-3] [2-3] [2-3]
[1-2] [2-3] [2-3]
[2-3] [2-3] [2-3]
[2-3] [1-2] [2-3]
[1-2] [2-3] [2-3]
[1-2] [2-3] [2-3]
[2-3] [2-3] [2-3]
[1-2] [2-3] [2-3]
1
2
3
1
2
3
----
----
(Freq. Ratio)
BF1 BF0
[1-2] [1-2]
[2-3] [1-2]
[2-3] [2-3]
[2-3] [2-3]
[1-2] [2-3]
[1-2] [2-3]
[1-2] [1-2]
[1-2] [1-2]
[1-2] [1-2]
[1-2] [1-2]
[2-3] [1-2]
[2-3] [2-3]
[1-2] [1-2]
[1-2] [1-2]
[1-2] [1-2]
[1-2] [1-2]
[1-2] [1-2]
[2-3] [1-2]
[2-3] [2-3]
[2-3] [2-3]
[1-2] [2-3]