Processor Options
4-7
Installing a Processor Module
To replace a processor module you have removed,
or
to
install
a new
processor module:
1.
Align
the
processor module so
that
its
200-pin connector is
aligned directly over
the
CPU slot connector on
the
motherboard.
2.
When
it
is
correctly aligned, press down
on
the
processor
module directly over
the
connector.
Do
not
press down
elsewhere
on
the
processor module.
If
it
does not
seat
in
the
slot
connector,
it
is
not
properly aligned.
3.
If
there
are
any
other
connections to be
made
for
the
processor
module,
make
them
as called for
in
the
module's installation
directions.
Upgrading a 68EC040 Microprocessor
A4000 models shipped
with
a 68040-level microprocessor on
the
processor module
may
have
the
68EC040
variation
of
the
chip.
The
EC chip
omits
the
internal
FPU
and
memory
management
unit
(MMU) sections
present
on
the
full 68040. While a 68EC040
can
execute
math
operations faster
than
a 68030 + 68882
FPU
combination,
the
further
performance gains
of
the
internal
68040
FPU
are
dramatic. Also, some operating systems, such
as
UNIX,
require
the
presence of
an
MMU. The 68EC040 chip
is
socketed so
that
you
can
remove
it
and
replace
it
with
a full 68040
if
you
require
an
MMU
or
the
best
possible floating point
math
performance.
Note
When
running
a 68040 or 68EC040 microprocessor,
the
68040.library file
must
be
in
your LIBS: directory.
68040 Chip Installation
68040
series
processors
are
large
pin
grid
array
(PGA) chips.
Removing
an
existing 68EC040 chip requires a suitable chip
puller
and
a flat
blade
screwdriver.
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