SILICON STAR INTERNATIONAL, INC. AN4 Processor 80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive Processor Speed 25/33/40/50(internal)/50/66(internal)MHz Chip Set SIS Max. Onboard DRAM64MB Cache 128/256/512KB BIOS AMI/Award Dimensions 260mm x 220mm I/O Options 32-bit VESA local bus slots (3), green PC feature NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location External battery J1 Reset switch JW3 Green PC monitor AC JP8 Turbo switch JW4 connector Power LED & keylock JW1 Turbo LED JW5 Speaker JW2 32-bit VESA Local SL1 - SL3 bus slots USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not JP9 Closed alter » CMOS memory normal operation JP10 pins 1 & 2 closed CMOS memory clear JP10 pins 2 & 3 closed » Green PC enabled JP13 Closed Green PC disabled JP13 Open » Factory configured - do not JP19 Open alter » Factory configured - do not JP36 Closed alter Note: The location of the factory configured jumpers is unidentified. DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (4) 256K x 9 NONE NONE NONE 1MB (1) 256K x NONE NONE NONE 36 2MB (4) 256K x 9 (4) 256K x 9 NONE NONE 2MB (1) 256K x (1) 256K x NONE NONE 36 36 4MB (4) 1M x 9 NONE NONE NONE 4MB (1) 1M x 36 NONE NONE NONE 6MB (1) 256K x (1) 256K x (4) 1M x 9 NONE 36 36 6MB (4) 1M x 9 (1) 256K x (1) 256K x NONE 36 36 8MB (1) 2M x 36 NONE NONE NONE 8MB (4) 1M x 9 (4) 1M x 9 NONE NONE 10MB (4) 256K x 9 (4) 256K x 9 (1) 1M x 36 (1) 1M x 36 10MB (1) 1M x 36 (1) 1M x 36 (4) 256K x 9 (4) 256K x 9 12MB (4) 1M x 9 (1) 1M x 36 (1) 1M x 36 NONE 16MB (4) 1M x 9 (4) 1M x 9 (1) 1M x 36 (1) 1M x 36 16MB (1) 2M x 36 (1) 2M x 36 NONE NONE 16MB (1) 4M x 36 NONE NONE NONE 16MB (4) 4M x 9 NONE NONE NONE 18MB (4) 256K x 9 (4) 256K x 9 (1) 4M x 36 NONE 20MB (1) 1M x 36 (1) 4M x 36 NONE NONE 24MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 NONE 24MB (4) 1M x 9 (4) 1M x 9 (1) 4M x 36 NONE 24MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 NONE 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 32MB (1) 4M x 36 (1) 4M x 36 NONE NONE 32MB (4) 4M x 9 (4) 4M x 9 NONE NONE 36MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 NONE 36MB (4) 4M x 9 (4) 4M x 9 (1) 1M x 36 NONE DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 40MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 40MB (4) 4M x 9 (4) 4M x 9 (1) 2M x 36 NONE 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 NONE 48MB (4) 4M x 9 (4) 4M x 9 (1) 4M x 36 NONE 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 DRAM JUMPER CONFIGURATION Bank 0 Bank 1 Bank 2 Bank 3 JP39 JP40 JP41 SIMM 1 SIMM 5 SIMM 9 SIMM 10 1 & 2 1 & 2 Open - 4 - 8 (S) (S) SIMM 1 SIMM 5 SIMM 9 SIMM 10 1 & 2 1 & 2 Open - 4 - 8 (D) (D) SIMM 9 SIMM 10 SIMM 1 SIMM 5 2 & 3 2 & 3 Open (S) (S) - 4 - 8 SIMM 9 SIMM 10 SIMM 1 SIMM 5 2 & 3 2 & 3 Open (D) (D) - 4 - 8 SIMM 9 SIMM 9 SIMM 10 SIMM 10 2 & 3 2 & 3 Closed (D) (D) (D) (D) SIMM 9 SIMM 5 SIMM 1 NONE 2 & 3 1 & 2 Open (S) - 8 - 4 SIMM 1 SIMM 10 SIMM 9 NONE 1 & 2 Open Open - 4 (S) (S) SIMM 1 SIMM 10 SIMM 9 SIMM 9 1 & 2 Open Open - 4 (S) (D) (D) SIMM 9 SIMM 9 SIMM 10 SIMM 5 Open 2 & 3 Closed (D) (D) (S) - 8 Note: Pins designated should be in the closed position. DRAM JUMPER CONFIGURATION (CON’T) Bank 0 Bank 1 Bank 2 Bank 3 JP42 JP43 JP44 SIMM 1 SIMM 5 SIMM 9 SIMM 10 1 & 2 1 & 2 1 & 2 - 4 - 8 (S) (S) SIMM 1 SIMM 5 SIMM 9 SIMM 10 1 & 2 1 & 2 1 & 2 - 4 - 8 (D) (D) SIMM 9 SIMM 10 SIMM 1 SIMM 5 2 & 3 1 & 2 2 & 3 (S) (S) - 4 - 8 SIMM 9 SIMM 10 SIMM 1 SIMM 5 2 & 3 2 & 3 1 & 2 (D) (D) - 4 - 8 SIMM 9 SIMM 9 SIMM 10 SIMM 10 2 & 3 2 & 3 Open (D) (D) (D) (D) SIMM 9 SIMM 5 SIMM 1 NONE 2 & 3 Open Open (S) - 8 - 4 SIMM 1 SIMM 10 SIMM 9 NONE 1 & 2 1 & 2 2 & 3 - 4 (S) (S) SIMM 1 SIMM 10 SIMM 9 SIMM 9 1 & 2 1 & 2 2 & 3 - 4 (S) (D) (D) SIMM 9 SIMM 9 SIMM 10 SIMM 5 2 & 3 2 & 3 Open (D) (D) (S) - 8 Note: Pins designated should be in the closed position. CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 NONE (1) 8K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 512KB (4) 128K x 8 NONE (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP1 JP2 JP3` JP20 JP21 JP38 128KB 1 & 2 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2 256KB 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2 512KB 1 & 2 1 & 2 2 & 3 2 & 3 2 & 3 2 & 3 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JP15 JP16 JP18 80486SX pins 2 & 3 Open Open closed 80487SX pins 1 & 2 pins 2 & 3 Closed closed closed 80486DX/DX2 pins 1 & 2 pins 1 & 2 Closed closed closed CPU SPEED CONFIGURATION Speed JP11 JP12 JP14 25MHz Open Closed Closed 33MHz Closed Closed Open 40MHz Open Open Closed 50iMHz Open Closed Closed 50MHz Closed Open Open 66iMHz Closed Closed Open VESA WAIT STATE CONFIGURATION Wait states JP4 0 wait states pins 1 & 2 closed 1 wait state pins 2 & 3 closed VESA BUS SPEED CONFIGURATION CPU speed JP5 < = 33MHz pins 1 & 2 closed > 33MHz pins 2 & 3 closed GREEN PC CONFIGURATION Description JP8 Signal pin 1 Ground pin 2