To change the speed, move the switch on the front panel as shown in
Figure 2-2. To run the computer at 4.77MHz, move the switch to the left. To
run it at 10 MHz, move the switch to the right. You can do this at any time
without rebooting the system.
Figure 2-2.
Speed switch
The power light on the front panel is red when the computer is running
at 4.77MHz and green when it is running at 10MHz.
Resetting the Computer
You may occasionally need to reset the computer, either to load a differ-
ent operating system, or because a program has failed and the computer does
not respond to your keyboard commands. However, resetting the computer
causes all data in the computer’s temporary memory (RAM) to be lost, so if
you have a problem, you should reset the computer only as a last resort.
WARNING: Do not reset the computer to exit a program unless
you have to. Some application programs classify and
store new data whenever you exit the program prop
erly. If you reset the computer while such a program
is running, you may lose data.
2-3
