M-tech R658N Instructions d'utilisation
R658N Jumper Setting
For the Hardware Jumper setting :
You need to set the few jumpers for setting the CPU Clock & Ratio. Please refer
to the following information.
CPU Clock Ratio : JP8, JP9, JP10, JP11
CPU Clock Ratio
Rate JP8 JP9 JP10 JP11
2X 1-2 1-2 1-2 1-2
2.5X 1-2 1-2 1-2 2-3
3X 1-2 1-2 2-3 1-2
3.5X 1-2 1-2 2-3 2-3
4X 2-3 1-2 1-2 1-2
4.5X 2-3 1-2 1-2 2-3
5X 2-3 1-2 2-3 1-2
5.5X 2-3 1-2 2-3 2-3
6X 1-2 2-3 1-2 1-2
CPU & Bus Clock Select : JP4
JP4 CPU CLK AGP CLK PCI CLK
1-2 3-4 5-6 MHz MHz MHz
Short Short Open 133.3* 66.6* 33.3*
Short Open Short 124* 62* 31*
Short Short Short 112* 74.7* 37.3*
Open Open Open 100.2 66.8 33.4
Short Open Open 95.2 63.5 31.7
Open Short Open 83.3 66.6 33.3
Open Open Short 75 75 37.5
Open Short Short 66.8 66.8 33.4
* These are for reference only.
Future Function Jumper: JP7
Function JP7
Default Setting 1-2 Close
CMOS Clear Jumper : JP12
Function JP12
Function JP12
Clear CMOS 1-2 Close
Normal Operation 2-3 Close
For the Software Jumper setting :
You can set the CPU Clock & Ratio CMOS Setup Menu. The R658N default is CPU Clock = 66MHz,
CPU Ratio = 2. Turn on the system, after a series of diagnostic check, the message "PRESS <DEL> TO
ENTER SETUP" will appear. Press the <DEL> key and the main program screen will appear, choose the
"CHIPSET FEATURE SETUP" and the following screen will appear, there are 3 items can do these function :
1. CPU Host Clock (CPU/PCI) : Default, 66/SYM, 75/SYM, 83/SYM, 95/SYM, 100/SYM, 112/SYM,
124/SYM, 133/SYM (Default : Clock setting from Hardware Jumper
refer to page 2-3).
2. CPU Clock Ratio Jumpless : Disable : Ratio setting from Hardware Jumper.
Enable : Ratio setting from next item --- "Processor Core Frequency".
3. Processor Core Frequency : x2.0, x3.0, x4.0, x5.0, x2.5, x3.5, x4.5, x5.5, x6.0, x7.0, x8.0, x6.5, x7.5, x1.5
Note : If the system will no screen when you choose the wrong CPU Clock or Ratio. So, please turn off the
power, then please press and hold the <Insert> key and turn on the power again, the CPU Clock and
Ratio will used the hardware Jumper setting to start up the system. Then please go into the CMOS SETUP
again to set the right CPU Clock and Ratio.
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