Epson EISA Desktop - Manual (Page 60)

If you often use a copy-protected program diskette, you may
want to set your processor speed to change automatically to
low speed when accessing the diskette and return to high speed
when it is finished.
There are three ways to change the processor speed:
Run the System Configuration program (power-on
simulation speed setting)
Enter a keyboard command (temporary speed setting)
Run the ESPEED program (temporary speed setting).
If you use programs that require the processor to operate at low
or automatic speed only occasionally, you should use the
keyboard commands or the ESPEED program, described
below, to change the processor speed.
Entering Keyboard Commands
To change the processor speed, enter one of the keyboard
commands in the table below.
Keyboard speed setting commands
You must use the or key located on the numeric
keypad.
The speed setting remains in effect until you press RESET or
turn off the computer, or until you change it again.
3-6 Using Your Computer