Math Coprocessor; Table 2-1: Math Coprocessor Jumper W9 - Datatech Enterprises Apex 386SX/20 User Manual

Math Coprocessor

f you process numeric data, a math coprocessor will make your work
more efficient.
An optional 80387SX-20 coprocessor can be installed in socket U42
to accelerate processing of calculation-intensive applications. Jumper
W9 is used to enable or disable the 80387SX math coprocessor.
Remember
up with the notched end of the socket. Refer to the illustrations below
and on the next page to install the Intel 80387SX-20.
Refer to Table 2-1 below for jumper W9 and Figure 2-2 on the next
page for the 80386SX and the 80387SX.

Table 2-1: Math Coprocessor Jumper W9

4 Chapter 2: Setting Up Your System
that you must make sure the dotted end of the chip is lined