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.

INSTALLATION .III (Jumpers)

Pentium MMX (P55C) Intel Pentium (P54C) AMD-K6

 

AMD-K5

 

IBM/Cyrix 6x86(MX) IBM/Cyrix 6x86(M1)

(150MHz-233MHz) (75MHz-200MHz) (PR166 and faster)

(PR75-PR133)

(PR166 and faster)

(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]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 VID

2 VID 1 VID

0 VID

2 VID 1 VID

1 VID 0 VID

2 VID

 

0 VID

2 VID 1 VID

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

1

 

 

1

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

2

 

 

 

2

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dual Plane

 

 

3

 

 

3

 

 

 

3

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

K6-266

P55C/MX

K6-166/200

K6-233

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(2.0Volts)

(2.8Volts)

(2.9Volts)

(3.2Volts)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Single Plane

 

 

P54C/CS/K5

P54C/CS/6x86

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(3.4V) (STD)

(3.5V) (VRE)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CPU Vcore Voltage Selection

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.

16

ASUS TXP4 User’s Manual