ASUS TXP4 User’s Manual 17
III. INSTALLATION
(Jumpers)
III. INSTALLATION
R
Complete Names:
Intel Pentium P54C, P55C-MMX
AMD K5, K6
IBM/Cyrix 6x86, 6x86MX
CPU External Clock (BUS) Frequency Selection
BF0
BF1
BF0
BF1
BF0
BF1
BF0
BF1
1
2
3
1
2
3
1
2
3
1
2
3
66MHz
FS1
1
2
3
FS2
FS0
60MHz
FS1
1
2
3
FS2
FS0
50MHz
FS1
1
2
3
FS2
FS0
1
2
3
55MHz
FS1
FS2
FS0
75MHz
FS1
1
2
3
FS2
FS0
CPU : BUS Frequency Ratio
P54C/K5
P55C/K6/MX
IBM/Cyrix 6x86
3.0x(3/1)
3.0x(3/1)
4.0x(4/1)
2.5x(5/2)
2.5x(5/2)
1.0x(1/1)
2.0x(2/1)
2.0x(2/1)
2.0x(2/1)
1.5x(3/2)
3.5X(7/2)
3.0x(3/1)
Set the jumpers according to the internal speed of your processor as follows:
CPU Model Freq. Ratio BUS Freq. FS0 FS1 FS2 BF0 BF1
Intel Pentium 233MHz 3.5x 66MHz [2-3] [1-2] [2-3] [1-2] [1-2]
Intel Pentium 200MHz 3.0x 66MHz [2-3] [1-2] [2-3] [1-2] [2-3]
Intel Pentium 166MHz 2.5x 66MHz [2-3] [1-2] [2-3] [2-3] [2-3]
Intel Pentium 150MHz 2.5x 60MHz [1-2] [2-3] [2-3] [2-3] [2-3]
Intel Pentium 150MHz 2.0x 75MHz [1-2] [2-3] [2-3] [2-3] [1-2]
Intel Pentium 133MHz 2.0x 66MHz [2-3] [1-2] [2-3] [2-3] [1-2]
Intel Pentium 120MHz 2.0x 60MHz [1-2] [2-3] [2-3] [2-3] [1-2]
Intel Pentium 100MHz 1.5x 66MHz [2-3] [1-2] [2-3] [1-2] [1-2]
Intel Pentium 90MHz 1.5x 60MHz [1-2] [2-3] [2-3] [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] [1-2] [2-3]
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 [1-2] [2-3] [2-3] [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 [1-2] [2-3] [2-3] [1-2] [1-2]
AMD-K5-PR75 75MHz 1.5x 50MHz [2-3] [2-3] [2-3] [1-2] [1-2]
IBM/Cyrix 6x86MX-PR233 200MHz 3.0x 66MHz [2-3] [1-2] [2-3] [1-2] [2-3]
IBM/Cyrix 6x86MX-PR200 166MHz 2.5x 66MHz [2-3] [1-2] [2-3] [2-3] [2-3]
IBM/Cyrix 6x86MX-PR166 150MHz 2.5x 60MHz [1-2] [2-3] [2-3] [2-3] [2-3]
*IBM/Cyrix 6x86-PR166+ 133MHz 2.0x 66MHz [2-3] [1-2] [2-3] [2-3] [1-2]
*NOTE: Only IBM or Cyrix Rev 2.7 or later is supported on this motherboard (see next page). Bootup
screen will show 6x86-P166+ with the Cyrix PR166+ installed on this motherboard.
(BUS Freq.) (Freq. Ratio)
