This document is for the baby-sized (13.3" x 8.5") 80386-25 non-caching motherboard. It's identifying features are: an LED between expansion slots #5 and #6; eight 16-bit expansion slots; eight sockets for SIMMs (two banks of 4 each); a socket for an 80387 coprocessor; one 32-bit memory expansion slot (to be used with the M800 or M810 memory expansion card); the Micronics ASIC chipset (four chips). The bus speed for this motherboard is fixed at 8MHz. +=============================+ + + + MOTHERBOARD SWITCH SETTINGS + + + + * = Default setting + +=============================+ 1 Reserved *Off 2 80387 Coprocessor installed On 80387 Coprocessor not installed *Off 3 Reserved *On 4 Bios relocation enabled *On Bios relocation disabled Off 5 Reserved *Off 6 Color video adapter *On Monochrome video adapter Off 7 Reserved *Off 8 Reserved *Off +=============================+ + + + 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 J9 External 6-volt battery connector Pin 1 - Battery Positive Pin 2 - no connector Pin 3 - Ground Pin 4 - Ground J701 External speaker Pin 1 - Speaker Pin 2 - no connector Pin 3 - Ground Pin 4 - +5 volts 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 W98 Memory configuration Pin 1-2 Four 256Kx9 SIMMs installed in bank 0 Pin 2-3 Four 1Mx9 SIMMs installed in bank 0 W100 Memory configuration Pin 1-2 Four 256Kx9 SIMMs installed in bank 1 Pin 2-3 Four 1Mx9 SIMMs installed in bank 1 +==============+ + + + MEMORY CARDS + + + +==============+ M800 and M810 memory card: ========================== Either of these memory cards may be used on this motherboard to allow 4MB or 8MB to be added to the memory already installed on the motherboard. There are eight SIMM sockets on the memory card (two banks of 4 sockets), that will accept only 1Mx9 SIMMs. There are no switches or jumpers on the M800 or M810 to set.