UNIDENTIFIED BC3486UL Processor 80386DX/CX486DLC/80486SX/80487SX/ODP487SX/80486DX/ 80486DX2 Processor 20/25/33/40/50(internal)/50/66(internal)MHz Speed Chip Set UMC Video Chip Set None Maximum 32MB Onboard Memory Maximum Video None Memory Cache 64/128/256KB BIOS AMI Dimensions 254mm x 218mm I/O Options Local bus slot NPU Options 80387DX/CX83D87 [Image] CONNECTIONS Purpose Location Purpose Location External battery BATT Turbo switch CN4 Power LED & keylock CN1 Turbo LED CN5 Speaker CN2 Auxiliary keyboard KBD connector Reset switch CN3 Local bus slot SL1 USER CONFIGURABLE SETTINGS Function Label Position Battery type select internal BATT Pins 2 & 3 closed Battery type select external BATT Closed CMOS memory clear BATT Pins 3 & 4 closed Monitor type select color C/M Closed Monitor type select monochrome C/M Open DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (4) 256K x 9 None 2MB (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 None 5MB (4) 256K x 9 (4) 1M x 9 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 None 20MB (4) 1M x 9 (4) 4M x 9 32MB (4) 4M x 9 (4) 4M x 9 Note: The location of banks 0 & 1 is unidentified. CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 128KB (4) 32K x 8 None (1) 8K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JS1 JS2 JS3 JS4 JS5 JS6 64KB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 128KB 2 & 3 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 256KB 2 & 3 2 & 3 1 & 2 2 & 3 2 & 3 2 & 3 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (80386) Speed JF1 JF2 JF3 JF4 JF5 25MHz Open Closed Closed Closed Open 33MHz Open Open Closed Closed Closed 40MHz Open Closed Open Closed Closed CPU SPEED SELECTION (80486) Speed JF1 JF2 JF3 JF4 JF5 20MHz Closed Closed Open Open Closed 25MHz Open Closed Closed Open Closed 33MHz Open Open Closed Open Closed 50iMHz Open Closed Closed Open Closed 50MHz Open Open Open Open Open 66iMHz Open Open Closed Open Open CPU TYPE SELECTION Type JC1 JC2 JC3 JC4 80386 Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed closed CX486DLC Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed closed 80486 Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed closed CPU TYPE SELECTION (80486 ONLY) Type JC5 J6C 80486SX Pins 2 & 3 closed Open 80487SX Pins 1 & 2, 3 & 4 Pins 2 & 3 closed closed ODP487SX Pins 1 & 2, 3 & 4 Pins 2 & 3 closed closed 80486DX Pins 1 & 2, 3 & 4 Pins 1 & 2 closed closed 80486DX2 Pins 1 & 2, 3 & 4 Pins 1 & 2 closed closed NPU SELECTION Setting JC7 JC8 NPU not installed Open Open NPU installed Closed Closed LOCAL BUS SLOT SELECTION Setting J1 J2 J3 Normal ISA cards Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 installed closed closed closed Local Bus cards Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 installed closed closed closed LOCAL BUS CARD INSTALLED SELECTION CPU installed J4 J5 80386 Pins 2 & 3 closed Pins 2 & 3 closed 80486DX-50 Pins 2 & 3 closed Pins 2 & 3 closed All CPU types Pins 1 & 2 closed Pins 1 & 2 closed