Gateway 386/33 User Manual page 62

4-12 Gateway 2000 386/33 Computer System User's Guide
Note: The Weitek 3167
math coprocessor only
speeds up mathemati-
cal calculations that use
Weitek code.
The 386 system board can accomodate either the Intel
80387 math coprocessor or the Weitek 3167 math copro-
cessor. However, a coprocessor is only of benefit if
your application software is written to take advantage
of it. See your software manual to find out if a coproces-
sor would improve performance for you.
Installing a math coprocessor
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Figure 4-5. 121-pin PGA
socket at location U45.
A math coprocessor chip may be inserted in the center
of the 121-pin PGA Extended Math Coprocessor (EMC)
socket at U45. Refer to Figure 5-1 for the exact location.
This socket (shown in Figure 4-5) can hold the Intel
80387 chip or the Weitek 3167 chip. If you examine the
socket, you'll notice that one corner is flattened. Line up
the indentation or spot on the chip with the flattened
corner of the socket, and gently plug in the chip. When
the coprocessor is snapped in, it is ready to operate. The
system automatically detects the math coprocessor, there
are no dip switches to be set.
Caution: Make certain that the system unit power is
OFF before installing or removing a math coprocessor.
Continuing on
The following chapters provide specific details about
the various components in your system—system board,
disk drives and controllers, memory expansion, video
display adapters, and so forth.