ROBOTECH, INC. 386SX/486DX Processor 80386DX/CX486DLC/80486SX/80487SX/ODP486SX/80486DX/80486DX2 Processor Speed 25/33/40/50(internal)/50/66(internal)MHz Chip Set OPTI Max. Onboard 64MB DRAM Cache 64/128/256KB BIOS AMI Dimensions 254mm x 220mm I/O Options 32-bit VESA local bus slots (2) NPU Options 80387DX [Image] CONNECTIONS Purpose Location Purpose Location Power LED & keylock J1 Turbo LED J5 Speaker J2 External battery J6 Turbo switch J3 32-bit VESA local bus SL1 & SL2 slots Reset switch J4 USER CONFIGURABLE SETTINGS Function Jumper Position » Turbo switch enabled J3 Open turbo switch disabled J3 Closed » CMOS memory normal operation J6 pins 2 & 3 closed CMOS memory clear J6 pins 3 & 4 closed » Cyrix DLC PQFP CPU disabled JP4 Closed Cyrix DLC PQFP CPU enabled JP4 Open » 80386DX/80486DX PQFP CPU disabled JP15 Closed 80386DX/80486DX PQFP CPU enabled JP15 Open » Monitor type select color JP21 Closed Monitor type select monochrome JP21 Open » Factory configured - do not alter JP23 Open » VESA card select standard card in JP24 pins 2 & 3 SL1 closed VESA card select WD31 or Tekram JP24 pins 1 & 2 IDE card (50MHz only) closed » Battery type select Lithum JP26 pins 1 & 2 closed Battery type select NI-CD JP26 pins 2 & 3 closed » 80486DX-50 version select old JP28 Open 80486DX-50 version select new JP28 Closed 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 17MB (4) 256K x 9 (4) 4M x 9 20MB (4) 1M x 9 (4) 4M x 9 20MB (4) 4M x 9 (4) 1M x 9 32MB (4) 4M x 9 (4) 4M x 9 64MB (4) 16M x 9 NONE CACHE CONFIGURATION Size Bank 0 Bank 1 TAG (U18) TAG (U19) 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 NONE 128KB (4) 32K x 8 NONE (1) 8K x 8 NONE 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 NONE 256KB (4) 32K x 8 (4) 32K x 8 (1) 8K x 8 (1) 8K x 8 CACHE JUMPER CONFIGURATION Size JP10 JP11 JP16 JP17 64KB pins 2 & 3 pins 2 & 3 Open Open closed closed 128KB pins 1 & 2 pins 1 & 2 Closed Open closed closed 256KB pins 2 & 3 pins 2 & 3 Closed Closed closed closed CPU TYPE CONFIGURATION Type JP14 JP20 JP25 JP27 80386 Open pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed 80486 Closed pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed CPU TYPE CONFIGURATION (80386DX/CX486DLC) Type JP14 JP15 JP20 JP25 JP27 80386DX Open Open 2 & 3 1 & 2 1 & 2 (PQFP) 80386DX Open Closed 2 & 3 1 & 2 1 & 2 (PGA) CX486DLC Open Closed 2 & 3 1 & 2 1 & 2 (PGA) Note: Pins designated should be in the closed position. CPU SPEED CONFIGURATION (80386DX/CX486DLC) Speed JP6 JP7 JP8 JP9 JP22 33MHz Closed Closed Open pins 2 & 3 Open closed 40MHz Closed Closed Closed pins 2 & 3 Open closed CPU TYPE CONFIGURATION (80486) Type JP2 JP18 JP19 80486SX (PGA) Open Open pins 2 & 3 closed 80487SX pins 2 & 3 Closed pins 1 & 2 closed closed ODP486SX pins 2 & 3 Closed pins 1 & 2 closed closed 80486DX/DX2 pins 1 & 2 Closed pins 1 & 2 closed closed CPU SPEED CONFIGURATION (80486) Speed JP6 JP7 JP8 JP9 JP22 25MHz Open Open Open pins 1 & 2 Closed closed 33MHz Open Open Closed pins 1 & 2 Open closed 40MHz Open Closed Closed pins 1 & 2 Open closed 50iMHz Open Open Open pins 1 & 2 Closed closed 50MHz Open Closed Open pins 1 & 2 Open closed 66iMHz Open Open Closed pins 1 & 2 Open closed VESA IDE CONFIGURATION IDE JP1 JP12 JP13 IDE2 Open Open Closed IDE3 Open Closed Open IDE4 Closed Open Open