Toshiba Satellite M20 Maintenance Manual page 104

3.5 System Test
Expected CPU Speed--Specify the expected CPU Speed value you want
for further comparison.
3. Coprocessor
NPU Basic Functions Test
This test item is to check whether the precision of the numeric processor in
the float calculation is up to the IEEE standards.
NPU Interrupt Test
This test item is to check whether NPU transfers the abnormal Interrupt
program correctly by forcing an abnormal float.
4. CPU Information
This test item is used for getting & showing CPU Information. It will be
displayed as follows:
5. CPU Protected Mode Test
This test item is to check whether CPU protected mode instruction works
normally.
6. Speedstep
Intel Speedstep technology is supported by the mobile CPU of Pentium III
or above which allows a mobile PC user to operate at a higher frequency
when plugged into a wall outlet and automatically switch to a lower power
and frequency when running on battery, conserving battery life.
Satellite M20 Maintenance Manual
3 Diagnostic Programs
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