Epson 386/25 User Manual
Page 135
The math coprocessor socket is located on the main system
board to the right of the speaker, as shown below.
speaker
I
math coprocessor socket
4.
If an option card is blocking access to the math coprocessor
socket, follow the steps on page 5-15 to remove it.
5.
The math coprocessor socket is square and has three rows of
pins on each side. The 80387 coprocessor fits into the inner
two rows of pins. (The Weitek coprocessor or adapter fits
into all three rows.) The lower right comer of the socket is
notched, as shown in the next illustration.
Installing and Removing Options
5-27