UNIDENTIFIED ALI 386SX MAINBOARD Processor 80386SX/CX486SLC Processor Speed 16/20/25/33MHz Chip Set None Max. Onboard DRAM 16MB SRAM Cache None BIOS AMI Dimensions 216mm x 170mm I/O Options None NPU Options 80387SX [Image] CONNECTIONS Purpose Location Purpose Location External battery J4 Turbo switch & LED J8 Reset switch J6 Power LED & keylock J9 Speaker J7 USER CONFIGURABLE SETTINGS Function Jumper Position » ADS signal delay disabled J5 pins 2 & 3 closed ADS signal delay enabled J5 pins 1 & 2 closed » NPU mode select synchronous with JP2 pins 1 & 2 CPU closed NPU mode select asynchronous JP2 pins 2 & 3 closed » RTC type select 146816 JP3 open RTC type select DS1287 JP3 closed » Monitor type select monochrome JP4 open Monitor type select color JP4 closed » Parity check enabled JP6 open Parity check disabled JP6 closed BUS CLOCK CONFIGURATION CPU Speed JP1 JP5 33MHz pins 2 & 3 closed pins 2 & 3 closed 25MHz pins 1 & 2 closed pins 1 & 2 closed 20MHz pins 2 & 3 closed pins 1 & 2 closed 16MHz pins 1 & 2 closed pins 1 & 2 closed DRAM CONFIGURATION Size Bank 0 Bank 1 512KB (2) 256K x 9 NONE 1MB (2) 256K x 9 (2) 256K x 9 2MB (2) 1M x 9 NONE 4MB (2) 1M x 9 (2) 1M x 9 8MB (2) 4M x 9 NONE 16MB (2) 4M x 9 (2) 4M x 9