3820 HD  (250-3572)     Adding a Math Coprocessor       Faxback Doc. # 1449

Graphical design programs or programs that perform a large number of
mathematical computations require your computer to do a lot of work.  These
types of programs can take additional time to run unless you have a math
coprocessor in you computer.  A coprocessor allows your computer to run 
these types of programs much faster.

Cautions:

*   Be sure you touch a grounded metal object before handling the copro-
    cessor.

*   Be sure to correctly position the math coprocessor.  Once the math
    coprocessor is installed, you must use a special chip extraction tool 
    to remove the coprocessor.

To install a coprocessor, do the following:

1.  Exit any program you might be in and turn off your computer.

2.  Remove the battery.

3.  Remove the two screws from the compartment cover.

4.  Position the math coprocessor in the socket as shown.  Use the small 
    hole on the chip's top surface and the slanted corner as guides.

5.  Press down the math coprocessor until it snaps into place.

6.  Replace the compartment cover, and reinstall the battery.

7.  Turn on your computer.

(jej-05/10/94)