BIOSTAR MICROTECH INTERNATIONAL CORPORATION MB-1425/1433/1440/1450UIV (VER. 2) Processor CX486M6/UMC486/80486SX/CX486M7/AM486DX/SL80486DX/80486DX/ AM486DX2/AM486DXL/SL80486DX2/80486DX2/80486DX4/P24D/Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz Speed Chip Set Unidentified Max. 64MB Onboard DRAM Cache 64/128/256KB BIOS AMI Dimensions 254mm x 218mm I/O 32-bit VESA local bus slots (3), green PC connector Options NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location External battery JP8 Turbo switch JP15 (pins 14 - 16) Speaker JP15 (pins 1 - +5v ground JP15 (pins 17 4) - 18) Power LED & JP15 (pins 5 - Green PC connector JP24 keylock 9) Turbo LED JP15 (pins 10 Green PC connector JP25 - 11) Reset switch JP15 (pins 12 32-bit VESA local SL1 - SL3 - 13) bus slots USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation JP8 pins 2 & 3 closed CMOS memory clear JP8 pins 3 & 4 closed Battery type select external JP8 Closed » Factory configured - do not alter JP31 Open » Factory configured - do not alter JP32 Open » VESA bus clock type select JP36 pins 1 & 2 synchronous closed VESA bus clock type select JP36 pins 2 & 3 asynchronous closed DRAM CONFIGURATION Size Bank 0/2 Bank 1/3 Bank 2 1MB (1) 256K x 36 NONE NONE 1MB NONE (1) 256K x 36 NONE 1MB NONE NONE (4) 256K x 9 2MB (1) 256K x 36 NONE (4) 256K x 9 2MB NONE (1) 256K x 36 (4) 256K x 9 2MB (1) 256K x 36 (1) 256K x 36 NONE 2MB (1) 512K x 36 NONE NONE 2MB NONE (1) 512K x 36 NONE 3MB (1) 256K x 36 (1) 256K x 36 (4) 256K x 9 3MB NONE (1) 512K x 36 (4) 256K x 9 3MB (1) 256K x 36 (1) 512K x 36 (4) 256K x 9 3MB (1) 512K x 36 (1) 256K x 36 NONE 4MB (1) 256K x 36 (1) 512K x 36 (4) 256K x 9 4MB NONE NONE (4) 1M x 9 4MB (1) 512K x 36 (1) 512K x 36 NONE 4MB (1) 1M x 36 NONE NONE 4MB NONE (1) 1M x 36 NONE 5MB (1) 1M x 36 NONE (4) 256K x 9 5MB NONE (1) 1M x 36 (4) 256K x 9 5MB (1) 256K x 36 NONE (4) 1M x 9 5MB NONE (1) 256K x 36 (4) 1M x 9 5MB (1) 256K x 36 (1) 1M x 36 NONE 5MB (1) 1M x 36 (1) 256K x 36 NONE 6MB NONE (1) 512K x 36 (4) 1M x 9 6MB (1) 1M x 36 (1) 512K x 36 NONE 6MB (1) 512K x 36 (1) 1M x 36 NONE 7MB (1) 1M x 36 (1) 512K x 36 (4) 256K x 9 7MB (1) 256K x 36 (1) 512K x 36 (4) 1M x 9 8MB (1) 1M x 36 NONE (4) 1M x 9 8MB NONE (1) 1M x 36 (4) 1M x 9 8MB (1) 1M x 36 (1) 1M x 36 NONE 8MB (1) 2M x 36 NONE NONE 8MB NONE (1) 2M x 36 NONE 9MB (1) 1M x 36 (1) 1M x 36 (4) 256K x 9 DRAM CONFIGURATION (CON’T) Size Bank 0/2 Bank 1/3 Bank 2 9MB (1) 1M x 36 (1) 256K x 36 (4) 1M x 9 9MB (1) 256K x 36 (1) 1M x 36 (4) 1M x 9 10MB (1) 1M x 36 (1) 512K x 36 (4) 1M x 9 12MB (1) 1M x 36 (1) 1M x 36 (4) 1M x 9 12MB NONE (1) 2M x 36 (4) 4M x 9 12MB (1) 1M x 36 (1) 2M x 36 NONE 12MB (1) 2M x 36 (1) 1M x 36 NONE 16MB NONE NONE (4) 4M x 9 16MB (1) 4M x 36 NONE NONE 16MB NONE (1) 4M x 36 NONE 17MB (1) 4M x 36 NONE (4) 256K x 9 17MB NONE (1) 4M x 36 (4) 256K x 9 17MB (1) 256K x 36 NONE (4) 4M x 9 17MB NONE (1) 256K x 36 (4) 4M x 9 18MB (1) 256K x 36 (1) 4M x 36 (4) 256K x 9 18MB (1) 4M x 36 (1) 256K x 36 (4) 256K x 9 19MB (1) 4M x 36 (1) 2M x 36 (4) 256K x 9 20MB (1) 4M x 36 (1) 1M x 36 (4) 1M x 9 20MB NONE NONE (4) 1M x 9 20MB (1) 1M x 36 (1) 4M x 36 (4) 4M x 9 20MB NONE NONE (4) 4M x 9 21MB (1) 1M x 36 (1) 4M x 36 (4) 256K x 9 21MB (1) 4M x 36 (1) 1M x 36 (4) 256K x 9 24MB (1) 1M x 36 (1) 4M x 36 (4) 1M x 9 24MB (1) 4M x 36 (1) 1M x 36 (4) 1M x 9 32MB (1) 4M x 36 NONE (4) 4M x 9 32MB NONE (1) 4M x 36 (4) 4M x 9 32MB (1) 4M x 36 (1) 4M x 36 NONE 32MB (1) 8M x 36 NONE NONE 32MB NONE (1) 8M x 36 NONE 33MB (1) 8M x 36 NONE (4) 256K x 9 33MB NONE (1) 8M x 36 (4) 256K x 9 33MB (1) 4M x 36 (1) 4M x 36 (4) 256K x 9 33MB (1) 4M x 36 (1) 256K x 36 (4) 4M x 9 33MB (1) 256K x 36 (1) 4M x 36 (4) 4M x 9 34MB (1) 4M x 36 (1) 512K x 36 (4) 4M x 9 36MB (1) 4M x 36 (1) 1M x 36 (4) 4M x 9 36MB (1) 1M x 36 (1) 4M x 36 (4) 4M x 9 36MB NONE (1) 8M x 36 (4) 1M x 9 36MB (1) 4M x 36 (1) 4M x 36 (4) 1M x 9 48MB (1) 4M x 36 (1) 4M x 36 (4) 4M x 9 48MB NONE (1) 8M x 36 (4) 4M x 9 48MB (1) 4M x 36 (1) 8M x 36 NONE 48MB (1) 8M x 36 (1) 4M x 36 NONE 64MB (1) 8M x 36 (1) 8M x 36 NONE 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 (A) (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 256KB (B) (4) 64K x 8 NONE (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP7 JP9 JP10 JP33 64KB Open Open pins 2 & 3 Open closed 128KB Open pins 1 & 2 pins 1 & 2 Closed closed closed 256KB (A) Closed pins 2 & 3 pins 2 & 3 Closed closed closed 256KB (B) Closed pins 1 & 2, 3 pins 1 & 2 Closed & 4 closed closed CPU TYPE CONFIGURATION Type JP11 JP12 JP13 CX486M6 1 & 2, 3 & 4, 1 & 2, 3 & 4, 2 & 3 5 & 6 5 & 6 UMC486 2 & 3 2 & 3 2 & 3 80486SX Open 2 & 3 2 & 3 CX486M7 1 & 2, 3 & 4, 1 & 2, 3 & 4, 1 & 2, 3 & 4 5 & 6 5 & 6 AMD486DXL 2 & 3 2 & 3 1 & 2, 3 & 4 SL80486DX 1 & 2 1 & 2 1 & 2, 3 & 4 SL80486DX2 1 & 2 1 & 2 1 & 2, 3 & 4 80486DX Open 2 & 3 1 & 2, 3 & 4 80486DX2 Open 2 & 3 1 & 2, 3 & 4 80486DX4 1 & 2 1 & 2 1 & 2, 3 & 4 P24D 1 & 2, 4 & 5 1 & 2, 4 & 5 1 & 2, 3 & 4 Pentium Overdrive 1 & 2 1 & 2 1 & 2, 3 & 4 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION (CON’T) Type JP17 JP18 JP19 JP35 CX486M6 Open 2 & 3, 4 & 2 & 3, 4 & Open 5 5 UMC486 3 & 4 1 & 2 Open Closed 80486SX Open Open Open Closed CX486M7 1 & 2 2 & 3, 4 & 2 & 3 Open 5 AMD486DXL 1 & 2, 3 & 1 & 2 Open Closed 4 SL80486DX 1 & 2 5 & 6 1 & 2, 3 & Open 4 SL80486DX2 1 & 2 5 & 6 1 & 2, 3 & Open 4 80486DX 1 & 2 Open Open Closed 80486DX2 1 & 2 Open Open Closed 80486DX4 1 & 2 5 & 6 1 & 2, 3 & Open 4 P24D 1 & 2 3 & 4, 5 & 1 & 2, 3 & Open 6 4 Pentium 2 & 3 5 & 6 1 & 2, 3 & Open Overdrive 4 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JP20 JP23 All CPU Open Open AM80486DX2-66/80 only Closed Closed CPU SPEED CONFIGURATION Speed JP4 JP5 JP6 25MHz Open Open Closed 33MHz Closed Closed Closed 40MHz Open Closed Closed 50iMHz Open Open Closed 50MHz Closed Open Open 66iMHz Closed Closed Closed 75iMHz Open Open Closed 100iMHz Closed Closed Closed CPU VOLTAGE CONFIGURATION Voltage JP14 JP16 JP27 3.45v pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 5v pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed VESA WAIT STATE CONFIGURATION Wait states JP22 0 wait states Open 1 wait state Closed BUS SPEED CONFIGURATION CPU speed JP21 <= 33MHz Open > 33MHz Closed