Lnstallling Processor; Installing Numeric Coprocessor - DTK Computer Apex 386/40 User Manual

lnstalling Processor
The mainboard supports the 386-33/40 processor. You should insert
the processor chip with the notch on into the corresponding notch on
the PGA(Pin Grid Array) type processor socket if you have a PEM-
3335D/4035D mainboard, or the PQFP (Plastic Quad Flat Pack) type
processor socket if you have a PEM-3335DS/4035DS mainboard.

Installing Numeric Coprocessor

The mainboard supports the 80387 and Weitek 3167 numeric
coprocessors. The coprocessor chip should be inserted into the
coprocessor socket (U39), with the notch on the package oriented in
the same direction as the corresponding notch on the socket. The
jumper J11 should be shorted if an 80387 or Weitek 3167 is not
installed and opened if either one of them is installed. The position of
the coprocessor socket is shown on the next page.
Chapter 2: Setting Up Your System 5