UNIDENTIFIED 386SX-S NON CACHE MAINBOARD MODEL 1 Processor 80386SX Processor Speed 16/20/25MHz Chip Set Unidentified Max. Onboard DRAM 16MB Cache None BIOS Unidentified Dimensions 220mm x 220mm I/O Options None NPU Options 80387SX [Image] CONNECTIONS Purpose Location Purpose Location External battery JP1 Turbo LED JP7 Turbo switch JP5 Power LED & keylock JP8 Reset switch JP6 Speaker JP9 USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select color JP2 Closed Monitor type select monochrome JP2 Open » NPU synchronous with CPU JP3 pins 1 & 2 closed NPU asynchronous with CPU JP3 pins 2 & 3 closed » Pipeline mode disabled JP4 pins 1 & 2 closed Pipeline mode enabled JP4 pins 2 & 3 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