80386-25 and 33 Cache (Baby size)
09-00035-xx is 25MHZ 09-00066 is 33MHZ
This document is for the baby-sized (13.3" x 8.5") 80386-25 and 80386-33 caching motherboard.
It's identifying features are: an LED between expansion slots #5 and #6;
eight 16-bit expansion slots; four sockets for SIMMs (one bank of 4); a socket for
an 80387 coprocessor.
The bus speed for this motherboard is fixed at 8MHz.
+=============================+
+ +
+ MOTHERBOARD SWITCH SETTINGS +
+ +
+ * = Default setting +
+=============================+
1 Reserved *On
2 80387 Coprocessor installed On
80387 Coprocessor not installed *Off
3 Bus speed selection (see below)
4 Bios relocation enabled *On
Bios relocation disabled Off
5 Reserved *Off
6 Color video adapter *On
Monochrome video adapter Off
7 Cache enabled *On
Cache disabled Off
8 Bus speed selection (see below)
Bus speed selection
-------------------
Switch settings -- * = default
---------------------------------------------
Board SW1.3=OFF SW1.3=ON SW1.3=ON SW1.3=OFF
Speed SW1.8=OFF SW1.8=OFF SW1.8=ON SW1.8=ON
----- --------- --------- --------- ---------
25MHz 6.25 Mhz 8.33 Mhz* 12.5 Mhz Undefined
33MHz 8.33 Mhz* 11.33 Mhz 16.66 Mhz Undefined
WARNING! Many cards are not able to run at a faster bus speed.
+=============================+
+ +
+ MOTHERBOARD JUMPER SETTINGS +
+ +
+=============================+
J5 Keylock / Power LED
Pin 1 - Power LED signal
Pin 2 - no connector
Pin 3 - Ground
Pin 4 - Keyboard lock signal
Pin 5 - Ground
J6 External keyboard connector
Pin 1 - Keyboard clock
Pin 2 - Keyboard data
Pin 3 - no connector
Pin 4 - Ground
Pin 5 - +5 volts DC
J8 External speaker
Pin 1 - Speaker
Pin 2 - no connector
Pin 3 - Ground
Pin 4 - +5 volts DC
J9 External 6-volt battery connector
Pin 1 - Battery Positive
Pin 2 - no connector
Pin 3 - Ground
Pin 4 - Ground
W1 Reset switch
Pin 1 - Signal
Pin 2 - Ground
W4 Turbo LED
Pin 1 - Signal
Pin 2 - Ground
W5 Turbo switch
Pin 1 - Signal
Pin 2 - Ground
W9 Non-cacheable region
Pin 1-2 D00000-DFFFFF
No connection E00000-EFFFFF
W14 Cache configuration
Pin 1-2 Direct map (32KB)
No connection Two-way set associative (64KB)
W15 Cache configuration
Pin 1-2 Direct map (32KB)
Pin 2-3 Two-way set associative (64KB)
W98 Memory configuration
Pin 1-2 Four 1Mx9 SIMMs installed
Pin 2-3 Four 256Kx9 SIMMs installed
+==============+
+ +
+ MEMORY CARDS +
+ +
+==============+
M710 memory card:
=================
This memory card may be used on this motherboard to allow up to 12MB to be added to
the memory already installed on the motherboard. There are sixteen (16) SIMM sockets
on the memory card (four banks of 4 sockets). The first two banks of memory can
accept 256Kx9 SIMMs, or 1Mx9 SIMMs. The second two banks of memory can only accept
1Mx9 SIMMs. The four banks of memory are numbered zero, one, two, and three. Bank
zero on the M710 uses the same addresses as bank zero on the motherboard (the four
sockets on the motherboard). Therefore, if the motherboard memory sockets are
populated, bank zero on the M710 must be left empty (or that memory will not be
recognized).
There are four jumpers on the M710, which configures the type of memory installed in
each of the four banks of memory. They are set as follows:
W1 Pin 1-2 Four 1Mx9 SIMMs in bank 0 (or when empty)
Pin 2-3 Four 256Kx9 SIMMs in bank 0
W2 Pin 1-2 Four 1Mx9 SIMMs in bank 1 (or when empty)
Pin 2-3 Four 256Kx9 SIMMs in bank 1
W3 Pin 1-2 Four 1Mx9 SIMMs in bank 2 (or when empty)
W4 Pin 2-3 Four 1Mx9 SIMMs in bank 3 (or when empty)