The message tells you the switches you should use to set the speed to high or low. At the MS-DOS prompt, type the ESPEED command again and include the appropriate switch, such as the following:

ESPEED L

This command changes the processor speed to low.

To see the current CPU speed, type ESPEED only and press Enter. You see the following:

<+>

:

Speed Up

1 2 . 0 M H Z < - >

:

Speed Down

<Esc>: Exit

The processor speed you set remains in effect until you press the RESET button or turn off the computer, or until you change it using the SETUP program, a keyboard command, or the ESPEED program again.

Entering the ESPEED command in a batch file

You may want to run the ESPEED program by including the command in a batch file. For example, if you have a program called SAMPLE which requires a slower processor speed, you could include the following commands in a batch file to start the SAMPLE program:

ESPEED L

SAMPLE

You could name the batch file SAMP.BAT. Whenever you need to run the SAMPLE program, insert the program diskette in drive A. Then type SAMP and press Enter. The computer changes the speed to low and starts the SAMPLE program.

See your MS-DOS Reference Manual for instructions on creating and using batch files.

4-6 Enhancing System Operations