Intel Pentium III Processor/840, Руководство пользователя, Страница: 73 / 151

Intel
®
Pentium
®
III Processor/840 Development Kit Manual A-1
Using Different Processors
in the Board
A
The Intel Pentium
®
III Processor/840 Development Kit board supports processor side bus (PSB)
frequencies of 100 MHz and 133 MHz (with processor speeds up to 866 MHz). By default, the
board’s PSB operates at 133 MHz. Follow these steps to configure the board to support a 100 MHz
PSB:
1. Completely remove power from the board.
2. Obtain 100 MHz PSB processors. The processors included with the kit operate at 133 MHz.
You must obtain processors that operate at 100 MHz.
3. Remove the 133 MHz PSB processors. To do this, remove the fans from each processor. Lift
the bar on the side of the PGA370 sockets to release the processors. Carefully lift the
processors out of their sockets.
4. Install the 100 MHz PSB processors on the motherboard. Insert the 100 MHz PSB
processors into the sockets. Be sure to align the pins correctly. Secure the bar on the side of the
socket and replace the fans.
5. Reconfigure jumpers. Place a jumper across pins 1 and 2 on jumper J2L1. Place another
jumper across pins 2 and 3 on jumper J2K1. See Figure 2-1 on page 2-8 for jumper locations.
This configures the board to run at 100 MHz.
6. Power up the system. The system will now operate with a PSB frequency of 100 MHz.
To order processors with a 100 MHz PSB frequency, contact your local Intel field representative.