FIRST INTERNATIONAL COMPUTER, INC. 80386SX-20/25 SC/SI Processor 80386SX Processor Speed 20/25MHz Chip Set Symphony Max. Onboard DRAM 32MB Cache 16/32/64/128KB BIOS AMI Dimensions 330mm x 218mm I/O Options None NPU Options 80387SX [Image] CONNECTIONS Purpose Location Purpose Location Turbo switch JP30 Speaker JP33 Turbo LED JP31 Power LED & keylock JP34 Reset switch JP32 USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select monochrome/EGA JP2 Open Monitor type select color JP2 Closed Note:JP21 is also used to set cache size, therefore its setting will vary when cache is enabled. DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 512KB (2) 256K x 9 NONE NONE NONE 1MB (2) 256K x 9 (2) 256K x 9 NONE NONE 1.5MB (2) 256K x 9 (2) 256K x 9 (2) 256K x 9 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 2.5MB (2) 256K x 9 (2) 1M x 9 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 8MB (2) 4M x 9 NONE NONE NONE 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 18MB (2) 1M x 9 (2) 4M x 9 (2) 4M x 9 NONE 20MB (2) 1M x 9 (2) 1M x 9 (2) 4M x 9 (2) 4M x 9 24MB (2) 4M x 9 (2) 4M x 9 (2) 4M x 9 NONE 26MB (2) 1M x 9 (2) 4M x 9 (2) 4M x 9 (2) 4M x 9 32MB (2) 4M x 9 (2) 4M x 9 (2) 4M x 9 (2) 4M x 9 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 16KB (2) 8K x 8 NONE (1) 8K x 8 32KB (2) 8K x 8 (2) 8K x 8 (1) 8K x 8 64KB (2) 32K x 8 NONE (1) 32K x 8 128KB (2) 32K x 8 (2) 32K x 8 (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP3 JP10 JP16 JP17 JP18 JP19 JP20 JP21 JP27 JP29 16KB 1 & 1 & 1 & Open 1 & 1 & 1 & 1 & Open Closed 2 2 2 2 2 2 2 32KB 1 & 1 & 1 & 1 & 2 & 2 & 2 & 2 & Closed Open 2 2 2 2 3 3 3 3 64KB 2 & 2 & 1 & Open 2 & 1 & 1 & 1 & Open Closed 3 3 2 3 2 2 2 128KB 2 & 2 & 2 & 2 & 2 & 2 & 2 & 2 & Closed Open 3 3 3 3 3 3 3 3 Note:Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION Setting JP4 JP5 JP6 JP7 JP8 Enabled 1 & 2 1 & 2 Open Open Open Disabled 2 & 3 2 & 3 Closed Closed Closed Note:Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (CON’T) Setting JP9 JP11 JP12 JP13 JP14 JP15 Enabled Open Open Open 1 & 2 Open Open Disabled Closed Closed Closed Open Closed Closed Note:Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (CON’T) Setting JP22 JP23 JP24 JP25 JP26 JP28 Enabled Open Open Closed Open Open Open Disabled Closed Open Open Closed Closed Closed