80386SX-25 Cache 09-00140-xx(Baby size)
This document is for the baby-sized (13.3" x 8.5") 80386SX-25 caching motherboard.
It's identifying features are: an LED between expansion slots #5 and #6;
six 16-bit expansion slots; eight sockets for SIMMs (four banks of 2); a socket for
an 80387SX coprocessor.
The bus speed for this motherboard is fixed at 8MHz.
+=============================+
+ +
+ MOTHERBOARD JUMPER SETTINGS +
+ +
+=============================+
J6 COM2
J8 COM1
J9 Parallel port
J19 IDE interface
J20 Floppy interface
J21 Hard disk LED
W1 Monitor type
Not connected Monochrome video card
Pins 1-2 Color video card
W2 Reserved
Not connected
W3 Reserved
Not connected
W4 CMOS memory
Pins 1-2 Battery backed-up CMOS (default)
Pins 2-3 Clear CMOS memory
W5 Memory type
Pins 2-3 4Mx9 SIMMs installed
Pins 1-2 and 3-4 4Mx9 SIMMs not installed
W6 Reserved
Not connected
P2 Reset switch
Pin 1 - Signal
Pin 2 - Ground
P3 External speaker
Pin 1 - Speaker
Pin 2 - no connector
Pin 3 - Ground
Pin 4 - +5 volts DC
P4 Keylock / Power LED
Pin 1 - Power LED signal
Pin 2 - no connector
Pin 3 - Ground
Pin 4 - Keyboard lock signal
Pin 5 - Ground
+========================+
+ +
+ MEMORY CONFIGURATION +
+ +
+========================+
Listed below are the possible memory configurations
Size
in Bank Bank Bank Bank
MB 0 1 2 3
-----------------------------------
1.0 256K 256K
1.5 256K 256K 256K
2.0 256K 256K 256K 256K
3.0 256K 256K 1MB
4.0 1MB 1MB
6.0 1MB 1MB 1MB
8.0 1MB 1MB 1MB 1MB
9.0 256K 256K 4MB
10.0 1MB 4MB
16.0 4MB 4MB
256K = Two 256Kx9 SIMMs in the bank
1MB = Two 1Mx9 SIMMs in the bank
4MB = Two 4Mx9 SIMMs in the bank
This document is for the mini-sized (23.0cm x 21.5cm) 386SX-25 non-cached motherboard.
The part number for this board is 09-00140-xx.
It's identifying features are: an LED between expansion slots #5 and #6; six 16-bit
expansion slots, and two 8-bit expansion slots; eight sockets for SIMMs (four banks of 2);
a socket for a 80387SX coprocessor.
The bus speed for this motherboard is fixed at 8MHz.
+=============================+
+ +
+ MOTHERBOARD JUMPER SETTINGS +
+ +
+=============================+
Jumper J2 is used to configure the battery backup method. To use the on-board battery,
place a jumper block connecting pins 2-3. If you wish to connect an external battery,
pin 1 is the battery positive lead, and pin 4 is for battery negative.
You can clear the contents of the CMOS memory by placing a jumper block connecting
pins 3-4, then turning on the power. Turn off the power, configure the jumper for
either the on-board or external battery, and turn the power back on. The system
will act as if it has never been turned on before.
JP2 Video type
Pins 1-2 Color video card installed
Not connected Monochrome video card installed
+========================+
+ +
+ MEMORY CONFIGURATION +
+ +
+========================+
Listed below are the possible memory configurations
Size
in Bank Bank Bank Bank
MB 0 1 2 3
-----------------------------------
0.5 256K
1.0 256K 256K
1.5 256K 256K 256K
2.0 256K 256K 256K 256K
2.0 1MB
2.5 256K 1MB
3.0 256K 256K 1MB
4.0 1MB 1MB
4.5 256K 1MB
5.0 256K 1MB
6.0 1MB 1MB 1MB
8.0 1MB 1MB 1MB 1MB
8.0 4MB
8.5 256K 4MB
9.0 256K 256K 4MB
10.0 1MB 4MB
12.0 1MB 1MB 4MB
16.0 4MB 4MB
256K = Two 256Kx9 SIMMs in the bank
1MB = Two 1Mx9 SIMMs in the bank
4MB = Two 4Mx9 SIMMs in the bank