UNIDENTIFIED 386SX-20/25 Processor 80386SX Processor Speed 20/25MHz Chip Set Headland Max. onboard DRAM 8MB Cache None BIOS AMI Dimensions 330mm x 218mm I/O Options None NPU Options 80387SX [Image] CONNECTIONS Purpose Location Purpose Location External battery JP3 Turbo Switch JP11 Power LED & keylock JP9 Speaker JP12 Turbo LED JP10 Reset JP13 USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select color JP2 Closed Monitor type select monochrome JP2 Open DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 512KB (2) 256K x NONE NONE NONE 9 1MB (2) 256K x (2) 256K x NONE NONE 9 9 1.5MB (2) 256K x (2) 256K x (2) 256K x 9 NONE 9 9 2MB (2) 256K x (2) 256K x (2) 256K x 9 (2) 256K x 9 9 9 2MB (2) 1M x 9 NONE NONE NONE 3MB (2) 256K x (2) 256K x (2) 1M x 9 NONE 9 9 4MB (2) 1M x 9 (2) 1M x 9 NONE NONE 4.5MB (2) 1M x 9 (2) 1M x 9 (2) 256K x 9 NONE 5MB (2) 1M x 9 (2) 1M x 9 (2) 256K x 9 (2) 256K x 9 6MB (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 NONE 8MB (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 PIPELINE MODE CONFIGURATION Mode CPU Speed JP5 JP6 JP7 Enabled 20 or 25MHz pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed Disabled 20mhz only pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed