BIOSTAR MICROTECH INTERNATIONAL CORPORATION MB-1425/1433/1440/1450UIV (REV. 1) Processor CX486M6/80486SX/SL80486SX/CX486DX/AM486DX/UMC U5/80486DX/ SL80486DX/CX486DX2/AM486DX2/80486DX2/SL80486DX2/AM486DX4/ 80486DX4/P24D/Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ Speed 100(internal)/120(internal)MHz Chip Set Unidentified Max. 64MB Onboard DRAM Cache 64/128/256KB BIOS AMI/Award Dimensions 254mm x 218mm I/O 32-bit VESA local bus slots (3), floppy drive interface, green Options PC connector NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Speaker JP15 pins 1 - +5v ground JP15 pins 17 & 4 18 Power LED & JP15 pins 5 - External battery JP8 keylock 9 Turbo LED JP15 pins 10 & Green PC LED JP24 11 Reset switch JP15 pins 12 & Green PC connector JP25 13 Turbo switch JP15 pins 14 & 32-bit VESA local SL1 - SL3 15 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 » Factory configured - do not alter JP31 N/A » DS12887 normal operation JP32 Open DS12887 clear JP32 Closed » VESA bus slot select synchronous JP36 pins 1 & 2 closed VESA bus slot select asynchronous JP36 pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 1MB (4) 256K x 9 NONE NONE 1MB NONE (1) 256K x 36 NONE 1MB NONE NONE (1) 256K x 36 2MB (4) 256K x 9 (1) 256K x 36 NONE 2MB (4) 256K x 9 NONE (1) 256K x 36 2MB NONE (1) 256K x 36 (1) 256K x 36 2MB NONE (1) 512K x 36 NONE 2MB NONE NONE (1) 512K x 36 3MB (4) 256K x 9 (1) 256K x 36 (1) 256K x 36 3MB (4) 256K x 9 NONE (1) 512K x 36 3MB NONE (1) 256K x 36 (1) 512K x 36 3MB NONE (1) 512K x 36 (1) 256K x 36 4MB (4) 256K x 9 (1) 256K x 36 (1) 512K x 36 4MB (4) 1M x 9 NONE NONE 4MB NONE (1) 512K x 36 (1) 512K x 36 4MB NONE (1) 1M x 36 NONE 4MB NONE NONE (1) 1M x 36 5MB (4) 256K x 9 (1) 1M x 36 NONE 5MB (4) 256K x 9 NONE (1) 1M x 36 5MB (4) 1M x 9 (1) 256K x 36 NONE 5MB (4) 1M x 9 NONE (1) 256K x 36 5MB NONE (1) 256K x 36 (1) 1M x 36 5MB NONE (1) 1M x 36 (1) 256K x 36 6MB (4) 1M x 9 NONE (1) 512K x 36 6MB NONE (1) 1M x 36 (1) 512K x 36 6MB NONE (1) 512K x 36 (1) 1M x 36 7MB (4) 256K x 9 (1) 1M x 36 (1) 512K x 36 7MB (4) 1M x 9 (1) 256K x 36 (1) 512K x 36 8MB (4) 1M x 9 (1) 1M x 36 NONE 8MB (4) 1M x 9 NONE (1) 1M x 36 8MB NONE (1) 1M x 36 (1) 1M x 36 8MB NONE (1) 2M x 36 NONE 8MB NONE NONE (1) 2M x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 9MB (4) 256K x 9 (1) 1M x 36 (1) 1M x 36 9MB (4) 1M x 9 (1) 1M x 36 (1) 256K x 36 9MB (4) 1M x 9 (1) 256K x 36 (1) 1M x 36 10MB (4) 1M x 9 (1) 1M x 36 (1) 512K x 36 12MB (4) 1M x 9 (1) 1M x 36 (1) 1M x 36 12MB (4) 1M x 9 NONE (1) 2M x 36 12MB NONE (1) 1M x 36 (1) 2M x 36 12MB NONE (1) 2M x 36 (1) 1M x 36 16MB (4) 4M x 9 NONE NONE 16MB NONE (1) 4M x 36 NONE 16MB NONE NONE (1) 4M x 36 17MB (4) 256K x 9 (1) 4M x 36 NONE 17MB (4) 256K x 9 NONE (1) 4M x 36 17MB (4) 4M x 9 (1) 256K x 36 NONE 17MB (4) 4M x 9 NONE (1) 256K x 36 18MB (4) 256K x 9 (1) 256K x 36 (1) 4M x 36 18MB (4) 256K x 9 (1) 4M x 36 (1) 256K x 36 19MB (4) 256K x 9 (1) 4M x 36 (1) 512K x 36 20MB (4) 1M x 9 (1) 4M x 36 NONE 20MB (4) 1M x 9 NONE (1) 4M x 36 20MB (4) 4M x 9 (1) 1M x 36 NONE 20MB (4) 4M x 9 NONE (1) 1M x 36 21MB (4) 256K x 9 (1) 1M x 36 (1) 4M x 36 21MB (4) 256K x 9 (1) 4M x 36 (1) 1M x 36 24MB (4) 1M x 9 (1) 1M x 36 (1) 4M x 36 24MB (4) 1M x 9 (1) 4M x 36 (1) 1M x 36 32MB (4) 4M x 9 (1) 4M x 36 NONE 32MB (4) 4M x 9 NONE (1) 4M x 36 32MB NONE (1) 4M x 36 (1) 4M x 36 32MB NONE NONE (1) 8M x 36 33MB (4) 256K x 9 NONE (1) 8M x 36 33MB (4) 256K x 9 (1) 4M x 36 (1) 4M x 36 33MB (4) 4M x 9 (1) 4M x 36 (1) 256K x 36 33MB (4) 4M x 9 (1) 256K x 36 (1) 4M x 36 34MB (4) 4M x 9 (1) 4M x 36 (1) 512K x 36 36MB (4) 4M x 9 (1) 4M x 36 (1) 1M x 36 36MB (4) 4M x 9 (1) 1M x 36 (1) 4M x 36 36MB (4) 1M x 9 NONE (1) 8M x 36 36MB (4) 1M x 9 (1) 4M x 36 (1) 4M x 36 48MB (4) 4M x 9 (1) 4M x 36 (1) 4M x 36 48MB (4) 4M x 9 NONE (1) 8M x 36 48MB NONE (1) 4M x 36 (1) 8M x 36 48MB NONE (1) 8M x 36 (1) 4M x 36 64MB NONE (1) 8M x 36 (1) 8M x 36 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 JP17 JP18 CX486SX 1 & 2, 3 1 & 2, 3 & 2 & 3 Open 2 & 3, 4 & 4, 5 & 4, 5 & 6 & 5 6 80486SX Open 2 & 3 2 & 3 Open Open SL80486SX 1 & 2 2 & 3 2 & 3 1 & 2 5 & 6 CX486DX 1 & 2, 3 1 & 2, 3 & 1 & 2, 1 & 2 2 & 3, 4 & 4, 5 & 4, 5 & 6 3 & 4 & 5 6 AM486DX Open 2 & 3 1 & 2, 2 & 3 Open 3 & 4 80486DX Open 2 & 3 1 & 2, 1 & 2 Open 3 & 4 SL80486DX 1 & 2, 4 1 & 2, 4 & 1 & 2, 1 & 2 3 & 4, 5 & 5 5 3 & 4 & 6 UMC U5S 2 & 3 2 & 3 2 & 3 3 & 4 1 & 2 CX486DX2 1 & 2, 3 1 & 2, 3 & 1 & 2, 1 & 2 2 & 3, 4 & 4, 5 & 4, 5 & 6 3 & 4 & 5 6 AM486DX2 Open 2 & 3 1 & 2, 2 & 3 Open 3 & 4 SLAM486DX2 1 & 2 1 & 2, 4 & 1 & 2, 1 & 2 3 & 4, 5 5 3 & 4 & 6 80486DX2 Open 2 & 3 1 & 2, 1 & 2 Open 3 & 4 SL80486DX2 1 & 2, 4 1 & 2, 4 & 1 & 2, 1 & 2 3 & 4, 5 & 5 5 3 & 4 & 6 CX486DX4 1 & 2, 3 1 & 2, 3 & 1 & 2, 1 & 2 2 & 3, 4 & 4, 5 & 4, 5 & 6 3 & 4 & 5 6 AM486DX4 Open 2 & 3 1 & 2, 2 & 3 Open 3 & 4 SLAM486DX4 1 & 2 1 & 2, 4 & 1 & 2, 1 & 2 3 & 4, 5 5 3 & 4 & 6 80486DX4 1 & 2, 4 1 & 2, 4 & 1 & 2, 1 & 2 3 & 4, 5 & 5 5 3 & 4 & 6 P24D 1 & 2, 4 1 & 2, 4 & 1 & 2, 1 & 2 3 & 4, 5 & 5 5 3 & 4 & 6 P24T 1 & 2 1 & 2 1 & 2, 2 & 3 5 & 6 3 & 4 Note: Pins designated should be in the closed position. All jumpers may not be present on all revisions. CPU TYPE CONFIGURATION (CON’T) Type JP19 JP20 JP23 JP35 JP40 CX486SX 2 & 3, 4 Open Open Open Open & 5 80486SX Open Open Open Closed Open SL80486SX 1 & 2, 3 Open Open Closed Open & 4 CX486DX 2 & 3 Open Open Open Open AM486DX Open 1 & 2 Open Closed Open 80486DX Open Open Open Closed Open SL80486DX 1 & 2, 3 Open Open Open Open & 4 UMC U5S Open Open Open Closed Open CX486DX2 2 & 3 Open Open Open Open AM486DX2 Open 1 & 2 Open Closed Open SL AM486DX2 1 & 2, 3 Open Open Open Closed & 4 80486DX2 Open Open Open Closed Open SL80486DX2 1 & 2, 3 Open Open Open Open & 4 CX486DX4 2 & 3 Open Open Open Open AM486DX4 Open 1 & 2 Open Closed Open SL AM486DX4 1 & 2, 3 Open Open Open Closed & 4 80486DX4 1 & 2, 3 Open Open Open Open & 4 P24D 1 & 2, 3 Open Open Open Open & 4 P24T 1 & 2, 3 Open Open Open Open & 4 Note: Pins designated should be in the closed position. All jumpers may not be present on all revisions. 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 80iMHz Open Closed Closed 100iMHz Closed Closed Closed CPU VOLTAGE CONFIGURATION Voltage JP14 JP16 JP27 JP38 JP39 3.3v - 3.6v 1 & 2 1 & 2 1 & 2 1 & 2 Open 4v 1 & 2 1 & 2 1 & 2 2 & 3 Closed 5v 2 & 3 2 & 3 2 & 3 1 & 2 Open Note: Pins designated should be in the closed position. 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