ROBOTECH, INC. COBRA RS Processor 80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive Processor Speed 25/33/40/50(internal)/50/66(internal)MHz Chip Set OPTI Max. Onboard DRAM128MB Cache 256/512/1024KB BIOS AMI Dimensions 330mm x 218mm I/O Options 32-bit VESA local bus slots (3), green PC connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location External battery JP2 Turbo switch JP19 Green power supply JP3 Green PC hardware JP20 switch Keyboard connector JP16 Turbo LED JP21 Speaker JP17 Reset switch JP26 Green PC LED JP18 32-bit VESA local SL1 - SL3 bus slots USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation JP1 pins 1 & 2 closed CMOS memory clear JP1 pins 2 & 3 closed » Monitor type select color JP4 Closed Monitor type select monochrome JP4 Open » Flash BIOS voltage select 5v JP5 pins 1 & 2 closed Flash BIOS voltage select 12v JP5 pins 2 & 3 closed » CPU type select Intel JP15 pins 1 & 2 closed CPU type select Cyrix JP15 pins 2 & 3 closed » Factory configured - do not JP24 Open alter » Factory configured - do not JP25 Open alter 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 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 64MB (4) 8M x 9 (4) 8M x 9 128MB (4) 16M x 9 (4) 16M x 9 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 512KB (4) 128K x 8 NONE (1) 32K x 8 1MB (4) 128K x 8 (4) 128K x 8 (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP11 JP12 256KB pins 1 & 2 closed pins 1 & 2 closed 512KB pins 2 & 3 closed pins 2 & 3 closed 1MB pins 2 & 4 closed pins 2 & 3 closed CPU TYPE CONFIGURATION Type JP8 JP9 JP10 80486SX pins 2 & 3 Open Open closed 80487SX pins 1 & 2, 3 & Open Open 4 closed 80486DX/DX2 pins 1 & 2, 3 & pins 2 & 3 Open 4 closed closed Pentium Overdrive pins 1 & 2, 3 & pins 1 & 2 Closed 4 closed closed CPU SPEED CONFIGURATION Speed JP13 JP14 JP27 JP28 25MHz Closed pins 1 & 2 pins 2 & 4 pins 2 & 3 closed closed closed 33MHz Open pins 1 & 2, 5 & pins 2 & 4 pins 2 & 3 6 closed closed closed 40MHz Open pins 1 & 2, 3 & pins 1 & 2 pins 1 & 2 4 closed closed closed 50iMHz Closed pins 1 & 2 pins 2 & 4 pins 2 & 3 closed closed closed 50MHz Open pins 1 & 2, 3 & pins 1 & 2 pins 1 & 2 4, 5 & 6 closed closed closed 66iMHz Open pins 1 & 2, 5 & pins 2 & 4 pins 2 & 3 6 closed closed closed BUS SPEED CONFIGURATION CPU speed JP22 <=33MHz Open >33MHz Closed VESA WAIT STATE CONFIGURATION Wait states JP23 0 wait states Open 1 wait state Closed