UNIDENTIFIED OPTI 80386 SYSTEM BOARD Processor 80386DX Processor Speed 25/33MHz Chip Set Unidentified Max. Onboard DRAM 16MB Cache 32/64KB BIOS AMI Dimensions 330mm x 218mm I/O Options None NPU Options 80387SX/3167 [Image] CONNECTIONS Purpose Location Purpose Location Turbo LED J14 Power LED & keylock J18 Reset switch J16 Speaker J19 Turbo switch J17 Riser Card S1 USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select color J2 Closed Monitor type select monochrome J2 Open » Battery type select internal J5 pins 2 & 3 closed Battery type select external J5 pins 1 & 4 closed » Weitek 3167 installed J6 Closed Weitek 3167 not installed J6 Open » Cache type select pipeline J7 pins 2 & 3 closed Cache type select non-pipeline J7 pins 1 & 2 closed » NPU enabled J8 pins 1 & 2 closed NPU disabled J8 pins 2 & 3 closed » Factory configured - do not alter J10 pins 1 & 2 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (4) 256K x 9 NONE NONE NONE 2MB (4) 256K x 9 (4) 256K x 9 NONE NONE 3MB (4) 256K x 9 (4) 256K x 9 (4) 256K x 9 NONE 4MB (4) 256K x 9 (4) 256K x 9 (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 NONE NONE NONE 5MB (4) 256K x 9 (4) 1M x 9 NONE NONE 5MB (4) 1M x 9 (4) 256K x 9 NONE NONE 6MB (4) 256K x 9 (4) 256K x 9 (4) 1M x 9 NONE 6MB (4) 256K x 9 (4) 1M x 9 (4) 256K x 9 NONE 6MB (4) 1M x 9 (4) 256K x 9 (4) 256K x 9 NONE 7MB (4) 256K x 9 (4) 256K x 9 (4) 1M x 9 (4) 256K x 9 7MB (4) 256K x 9 (4) 1M x 9 (4) 256K x 9 (4) 256K x 9 7MB (4) 1M x 9 (4) 256K x 9 (4) 256K x 9 (4) 256K x 9 8MB (4) 1M x 9 (4) 1M x 9 NONE NONE 9MB (4) 256K x 9 (4) 1M x 9 (4) 1M x 9 NONE 9MB (4) 1M x 9 (4) 1M x 9 (4) 256K x 9 NONE 9MB (4) 1M x 9 (4) 256K x 9 (4) 1M x 9 NONE 10MB (4) 256K x 9 (4) 256K x 9 (4) 1M x 9 (4) 1M x 9 10MB (4) 256K x 9 (4) 1M x 9 (4) 1M x 9 (4) 256K x 9 10MB (4) 1M x 9 (4) 1M x 9 (4) 256K x 9 (4) 256K x 9 10MB (4) 1M x 9 (4) 256K x 9 (4) 1M x 9 (4) 256K x 9 12MB (4) 1M x 9 (4) 1M x 9 (4) 1M x 9 NONE 13MB (4) 256K x 9 (4) 1M x 9 (4) 1M x 9 (4) 1M x 9 13MB (4) 1M x 9 (4) 1M x 9 (4) 1M x 9 (4) 256K x 9 13MB (4) 1M x 9 (4) 256K x 9 (4) 1M x 9 (4) 1M x 9 16MB (4) 1M x 9 (4) 1M x 9 (4) 1M x 9 (4) 1M x 9 Note: Bank 2 and Bank 3 are on the riser card. CACHE CONFIGURATION Size Bank 0 Bank 1 TAG0 TAG1 32KB (4) 8K x 8 NONE (3) 8K x 8 NONE 64KB (4) 8K x 8 (4) 8K x 8 (3) 8K x 8 (1) 8K x 8 EXTERNAL MEMORY CARD CONFIGURATION Select J15 32KB installed pins 1 & 2 closed 64KB installed pins 2 & 3 closed Not installed Open CACHE SIZE CONFIGURATION Size J9 J13 32KB pins 1 & 2 closed pins 1 & 2 closed 64KB pins 2 & 3 closed pins 2 & 3 closed CLOCK SELECT CONFIGURATION Select J3 J4 External pins 1 & 2 closed pins 1 & 2 closed Internal pins 2 & 3 closed pins 2 & 3 closed