Reconfiguring
“Warning
To
ensure
the
reliability
of
the computer, NEVER
reconfigure
the
board
while
the
power
is ON.
If
you wish
to
reconfigure
the system
board at any time,
ensure
that
the
power
to
the system
is
turned
OFF before
changing
any
hardware settings, such
as
DIP
switches
or
jumpers.
16.
1
Operation
The main
advantage
of
the
PlM-TB10-Z Turbo mother-
board over ordinary PC/XT
motherboards
is
its
dual clock
system.
This innovation
makes
it
possible
for your com-
puter to
operate
at either
of two
clock
speeds:
4.77MHz or
10MHz.
In
the
10MHz
Turbo mode, your
computer
will
op-
erate
up to 110%
faster than
a
conventional 8088-based
computer.
NOTE:
Do
not
use
RAM
memory on an
expansion card
because
its
design
may
not
be compatible
with
the
1OMHz
CPU at
access
time. Use memory on
the motherboard
comprised
of
4164 and 41256 and 4464 chips
within
120ns. Refer
to
RAM
installation
section. Recom-
mended
chips
are
shown
in
the table
below.
4164
41256
4464
N
EC
D4164C
D412560
D4464C
Hitachi
HM4846
HM50256
HM50464
Mitsubishi
M5K4164
M5M4256P
M5M4464P
Panasonic
MN4164
MN41256
MN4464
NOTE: Use NEC® 70108-10
chips
to
achieve
speeds
up
to 380%
faster than
an ordinary
XT.
17
