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16 ASUS TXP4 User’s Manual

III. INSTALLATION

(Jumpers)

III. INSTALLATION

Compatible Cyrix CPU Identification

The only Cyrix processor that is supported on this motherboard

is labeled Cyrix 6x86-P166+, which should be Revision 2.7 or

later. Look on the underside of the CPU for the serial number,

which should read G8DC6620A or later.

3. CPU Voltage Output Selection (VID0, VID1, VID2)

These jumpers set the voltage supplied to the CPU. The voltage regulators will auto-

matically detect and switch between Single Power Plane & Dual Power Planes.

Intel Pentium (P54C)

(75MHz-200MHz)

Pentium MMX (P55C)

(150MHz-233MHz)

AMD-K6

(PR166 and faster)

AMD-K5

(PR75-PR133)

IBM/Cyrix 6x86(MX)

(PR166 and faster)

IBM/Cyrix 6x86(M1)

(PR166 and faster)

Manufacturer CPU Type Single Plane Dual Plane VID0 VID1 VID2

AMD K6-PR266 ---- 2.0 Volts [----] [2-3] [----]

Intel/AMD/IBM/Cyrix P54C/CS/K5/6x86 3.5V(VRE) ---- [1-2] [2-3] [2-3]

AMD K6-PR166,200 ---- 2.9 Volts

Intel/AMD P54C/CS/K5 3.4V(STD) ---- [2-3] [2-3] [2-3]

Intel/IBM/Cyrix P55C/6x86MX ---- 2.8 Volts

AMD K6-PR233 ---- 3.2 Volts [2-3] [2-3] [1-2]

CPU Vcore Voltage Selection

Dual Plane

K6-266

(2.0Volts)

P55C/MX

(2.8Volts)

VID 0

VID 1

VID 2

VID 0

VID 1

VID 2

K6-166/200

(2.9Volts)

VID 0

VID 1

VID 2

P54C/CS/6x86

(3.5V) (VRE)

P54C/CS/K5

(3.4V) (STD)

Single Plane

K6-233

(3.2Volts)

VID 0

VID 1

VID 2

4. CPU External Frequency (BUS) 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 multi-

plied by 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 jumpers for CPU External (BUS) Frequency Selection.

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 59 60

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Asus TXP4 Manuel d'utilisateur Page 16

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