NOVACOR, INC. OPTIMUM 386SX-16/20/25 REV. B Processor 80386SX Processor Speed 16/20/25MHz Chip Set OPTI Max. Onboard DRAM 16MB Cache 16/32/64KB BIOS AMI/MR Dimensions 330mm x 218mm I/O Options None NPU Options 80387SX [Image] CONNECTIONS Purpose Location Purpose Location External battery J1 Turbo LED JP8 Speaker J21 Reset switch S1 Power LED & keylock J22 Turbo switch S3 USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation JP1 pins 2 & 3 closed CMOS memory clear JP1 pins 1 & 2 closed » Monitor type select color (AMI JP2 Closed BIOS) Monitor type select monochrome JP2 Open (AMI BIOS) » Password enabled (MR BIOS) JP2 Closed Password disabled (MR BIOS) JP2 Open DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (2) 256K x 9 (2) 256K x 9 NONE NONE 2MB (2) 256K x 9 (2) 256K x 9 (2) 256K x 9 (2) 256K x 9 2MB (2) 1M x 9 NONE NONE NONE 3MB (2) 256K x 9 (2) 256K x 9 (2) 1M x 9 NONE 4MB (2) 1M x 9 (2) 1M x 9 NONE NONE 5MB (2) 256K x 9 (2) 256K x 9 (2) 1M x 9 (2) 1M 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 9MB (2) 256K x 9 (2) 256K x 9 (2) 4M x 9 NONE 10MB (2) 1M x 9 (2) 4M x 9 NONE NONE 12MB (2) 1M x 9 (2) 1M x 9 (2) 4M x 9 NONE 16MB (2) 4M x 9 (2) 4M x 9 NONE NONE SRAM CONFIGURATION Size Bank 0 Bank 1 TAG 16KB (2) 8K x 8 NONE (2) 4K x 4 32KB (2) 8K x 8 (2) 8K x 8 (2) 16K x 4 64KB (2) 32K x 8 NONE (2) 16K x 4 SRAM JUMPER CONFIGURATION Size JP3 JP4 JP5 JP6 JP7 16KB 1 & 2 1 & 2 1 & 2 Open Open 32KB 2 & 3 1 & 2 1 & 2 Closed Open 64KB 2 & 3 2 & 3 2 & 3 Open Closed Note: Pins designated should be in the closed position.