Jumper
J1
Pinouts
GND
OSC
/P.G.
Procclk
Lil.
GND
W
'3
K
eylock
&
Power
LED
(Jumper J2)
i
Jumper J2
is
used
to
enable the use
of
the keyboard
I
and the power
LED. By
disabling
the
keylock, you
can
“lock"
the
data
in
your computer.
Unlocking
the
keylock
enables the keyboard. Refer
to
the table
below for
its
pinouts.
OOOOOO
1
+5V
l
l
l
.
Jumper J2 Pinouts
LED
Power
Not
Used
Ground
Keyboard
Inhibit
Ground
1
00000
Hardware Switch
(Jumper J3)
)3
O
The
hardware
switch (Turbo switch) allows you to
toggle the speed between
10MHz
and
20MHz. Refer
to
the
figures below for
the
pinouts
and jumper set-
tings.
Jumper J3
Hardware Switch
1
$53;
Turbo
1
Normal
J
Jumper J3 Pinouts
1
Select
Pin
J»
0
Ground
‘
18
Speaker
(
Jumper
J4)
Jumper J4
is
used
to
connect a speaker.
When
the
four pins
are connected
to
a speaker
in
a closed
circuit,
the speaker
is
functional. Refer to
the
figure
below
for
the
pinouts.
Jumper
J4
Pinouts
i
0
Data
Out
0
5 VDC
0
Ground
0
5 VDC
Turbo
LED
(Jumper
J5)
Jumper J5
is
used
to
enable
Turbo
LED.
The Turbo
LED in
the hardware
switch
indicates operation
in
the
Turbo mode.
Jumper J5 Pinouts
1
+5V
Indicate Pin
Reset (Jumper
J6)
Jumper J6
is
used
to
enable the hardware reset.
If
you
encounter
any problems
while
using unfamiliar
software, you
can
always
restart
from
the
beginning
by
pressing the reset
button. Note,
however that any
data
which
have
not
been saved
to disk
will
be
lost.
Refer to
the
figure below for
its
pinouts.
Jumper J6 Pinouts
I
O Ground
0
Reset
19
Summary of Contents for Mini 80386SX
Page 1: ...o Mini 803863X 20MHz Mainboard User s Manual ...
Page 26: ......