Deskpro 1000

Configuring System Board

Configuration and Location of Jumpers

 
# System Board ID Function
1 CPW Clear Password
2 EP1, EP2 Flash EPROM Type Selection
3 CLK1, CLK2, CLK3 CPU External Clock (BUS) Freq.
4 FREQ1, FREQ2, FREQ3 CPU to Bus Freq. Ratio
5 SRAM CPU to SRAM Data Transacting Mode Selection
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Flash EPROM Type Selection (EP)

The EP1 and EP2 jumpers allow you to configure the Flash EPROM chip:
EPROM Type Selection
Flash EPROM EP1 Pin Pairs EP2 Pin Pairs
1M * 1-2 1-2
2M 2-3 2-3
*Default 
To flash the EPROM, move the jumper to 2-3. After flashing, return the jumper to 1-2. 
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CPU External Clock (Bus) Frequency (CLK )

The CLK1, CLK2, and CLK3 jumpers allow you to set the different CPU speed configurations. Table shows the jumper settings for the different bus speed configurations.
CPU External Clock Frequency Settings
External (CPU/CLK) CLK1 Pin Pairs CLK2 Pin Pairs CLK3 Pin Pairs
66 MHz* 1-2 1-2` 1-2
60 MHz 2-3 1-2` 1-2
55 MHz 2-3 2-3 1-2
*Default setting
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System Board Jumper Settings

The following table identifies the jumper settings for each processor frequency for the Pentium with MMX Technology system boards:
Pentium with MMX Technology System Board Jumper Settings
CPU
External
CPU Clock Rate
Speed 
(MHz)
(CPU/CLK)
(MHz)
  

CLK1
  

CLK2
  

CLK3
  

FREQ1
  

FREQ2
  

FREQ3
233 66 1-2 1-2 1-2 1-2 1-2 1-2
200* 66 1-2 1-2 1-2 1-2 2-3 1-2
166 66 1-2 1-2 1-2 2-3 2-3 1-2
*Default setting
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CPU to SRAM Data Transacting Mode Selection (SRAM)

The SRAM jumper allows you to select the CPU to SRAM data read/write mode. 
SRAM Pin Pairs
Mode
Pin Pair
Intel Burst (Default) for Intel Pentium CPUs, AMD-K%, Cyrix, IBM* 1-2
Linear Burst 2-3
*Default setting
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Power-On Password Jumpers (CPW)

If you forget your password, you cannot access the computer. You will need to disable the User Password feature by setting the appropriate jumper on the system board. You will then be able to access your computer.
1. Turn off the computer and any external devices.

2. Disconnect the power cord from the power outlet and any external devices from the computer.

3. Remove the computer cover.

4. Locate Jumper CPW.
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5. Remove the jumper from the single pin and reinstall it over both pins.

6. Leave the jumper on for approximately 60 seconds.

7. Remove the jumper from both pins and reinstall on a single pin.

8. Replace the computer cover.

9. Restart the computer.

This page was updated on June 02, 2002
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