KT TECHNOLOGY PTE LTD. 386SX NON-CACHE MAINBOARD Processor 80386SX Processor Speed 16/20/25/33MHz Chip Set Acer Max. Onboard DRAM 16MB Cache None BIOS AMI Dimensions 220mm x 170mm I/O Options None NPU Options 80387SX [Image] CONNECTIONS Purpose Location Purpose Location External battery J4 Turbo LED & switch J8 Reset switch J6 Power LED & keylock J9 Speaker J7 USER CONFIGURABLE SETTINGS Function Jumper Position » ADS delay select enabled J5 pins 1 & 2 closed ADS delay select disabled J5 pins 2 & 3 closed » NPU synchronous with CPU JP2 pins 1 & 2 closed NPU asynchronous with CPU JP2 pins 2 & 3 closed » CMOS type select 1287 JP3 Closed CMOS type select 146818 JP3 Open » Monitor type select color JP4 pins 2 & 3 closed Monitor type select monochrome JP4 pins 1 & 2 closed » Parity check enabled JP6 Closed Parity check disabled JP6 Open DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 512KB (1) 256K x 9 (1) 256K x 9 NONE NONE 1MB (1) 256K x 9 (1) 256K x 9 (1) 256K x 9 (1) 256K x 9 2MB (1) 1M x 9 (1) 1M x 9 NONE NONE 4MB (1) 1M x 9 (1) 1M x 9 (1) 1M x 9 (1) 1M x 9 8MB (1) 4M x 9 (1) 4M x 9 NONE NONE 16MB (1) 4M x 9 (1) 4M x 9 (1) 4M x 9 (1) 4M x 9 CPU SPEED CONFIGURATION Speed JP1 JP5 16Mhz pins 1 & 2 closed pins 1 & 2 closed 20Mhz pins 2 & 3 closed pins 1 & 2 closed 25MHz pins 1 & 2 closed pins 1 & 2 closed 33MHz pins 2 & 3 closed pins 2 & 3 closed