Tandy 1200 HD User Manual page 145

You computer uses a 16-bit 8088 microprocessor. However, you
have the option of installing an 8087 microprocessor as well. This
optional microprocessor is designed specifically to speed up
mathematical operations. If you intend to use your computer for long
and complex mathematical operations, you may wish to add this
option. Before you begin, you will need to obtain an 8087
microprocessor.
Installation Procedure
NOTE
THE ILLUSTRATIONS IN THE FOLLOWING
PROCEDURE MAY NOT ACCURATELY DEPICT THE
INTERIOR LAYOUT OF YOUR COMPUTER; THEY
ARE PROVIDED AS EXAMPLES ONLY.
1. Once you have removed the cover from the system unit,
locate the coprocessor socket and any circuit board switches
that have to be set at the time of coprocessor installation.
Remove the mounting screws from any circuit cards that
block access to these items. Remove the cards. Set the
screws aside for use when you reinstall the circuit cards.
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