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