MICRO-STAR INTERNATIONAL CO., LTD. MS-4143 (VER. 1.0) Processor 80486SX/SL80486SX/AM486DX/80486DX/SL80486DX/CX486DX2/ AM486DXL/AM486DX2/80486DX2/SL80486DX2/SL80486DX4/P24D Processor 25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/ Speed 100(internal)MHz Chip Set ALI Video Chip None Set Maximum 64MB Onboard Memory Maximum None Video Memory Cache 128/256/512KB BIOS AMI Dimensions 270mm x 220mm I/O Options 32-bit PCI slots (3), floppy drive interface, game interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 CN1 Speaker JFP/pins 7 - 10 Serial port 2 CN2 Turbo LED JFP/pins 12 & 13 Parallel port CN3 Reset switch JFP/pins 19 & 20 Floppy drive CN4 IDE interface LED JFP/pins 21 & interface 22 IDE interface 2 CN5 Chassis fan power JFAN IDE interface 1 CN6 Green PC connector JG1 (monitor) Game interface CN7 Green PC LED JG2 External battery JB1 Green PC connector JG3 Power LED & JFP/pins 1 - 32-bit PCI slots PC1 - PC3 keylock 5 USER CONFIGURABLE SETTINGS Function Label Position » Battery type select internal JB1 Pins 2 & 3 closed Battery type select external JB1 Closed » Factory configured - do not JC10 Unidentified alter DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x None None None 36 2MB (1) 512K x None None None 36 2MB (1) 256K x (1) 256K x None None 36 36 3MB (1) 256K x (1) 256K x (1) 256K x None 36 36 36 4MB (1) 1M x 36 None None None 4MB (1) 512K x (1) 512K x None None 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 6MB (1) 512K x (1) 512K x (1) 512K x None 36 36 36 8MB (1) 2M x 36 None None None 8MB (1) 1M x 36 (1) 1M x 36 None None 8MB (1) 512K x (1) 512K x (1) 512K x (1) 512K x 36 36 36 36 12MB (1) 2M x 36 (1) 1M x 36 None None 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 None 16MB (1) 4M x 36 None None None 16MB (1) 2M x 36 (1) 2M x 36 None None 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 20MB (1) 4M x 36 (1) 1M x 36 None None 20MB (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 24MB (1) 4M x 36 (1) 2M x 36 None None 24MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 None 28MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 32MB (1) 8M x 36 None None None 32MB (1) 4M x 36 (1) 4M x 36 None None DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 40MB (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 None 40MB (1) 8M x 36 (1) 2M x 36 None None 40MB (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 44MB (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 48MB (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 None 48MB (1) 8M x 36 (1) 4M x 36 None None 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 None 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 8M x 36 (1) 8M x 36 None None 64MB (1) 16M x 36 None None None CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 None (1) 8K/16K/32 x 8 256KB (A) (4) 32K x 8 (4) 32K x 8 (1) 16K/32K x 8 256KB (B) (4) 64K x 8 None (1) 16K/32K x 8 512KB (4) 128K x 8 None (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JS1 JS2 JS3 128KB Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed 256KB (A) Pins 1 & 2 Pins 1 & 2 Pins 2 & 3 closed closed closed 256KB (B) Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed 512KB Pins 2 & 3 Pins 1 & 2 Pins 1 & 2 closed closed closed CPU SPEED SELECTION Speed JK1 JK2 JK3 25MHz Open Pins 2 & 3 Open closed 33MHz Pins 1 & 2, 3 & Pins 2 & 3 Open 4 closed closed 40MHz Pins 1 & 2 Pins 1 & 2 Closed closed closed 50iMHz Open Pins 2 & 3 Open closed 66iMHz Pins 1 & 2, 3 & Pins 2 & 3 Open 4 closed closed 75iMHz Open Pins 2 & 3 Open closed 80iMHz Pins 1 & 2 Pins 1 & 2 Closed closed closed 100iMHz Pins 1 & 2, 3 & Pins 2 & 3 Open 4 closed closed CPU TYPE SELECTION Type JC1 JC2 JC3 JC4 80486SX Open 2 & 3 Open Open SL80486SX Open 2 & 3 Open 2 & 3 AM486DX 2 & 3 1 & 2, 3 & Open Open 4 80486DX 2 & 3 1 & 2, 3 & Open Open 4 SL80486DX 2 & 3 1 & 2, 3 & Open 2 & 3 4 CX486DX2 2 & 3 1 & 2, 3 & 4 & 5 4 & 5 4 AM486DXL 2 & 3 1 & 2, 3 & 1 & 2 1 & 2 4 AM486DX2 2 & 3 1 & 2, 3 & Open Open 4 80486DX2 2 & 3 1 & 2, 3 & Open Open 4 SL80486DX2 2 & 3 1 & 2, 3 & Open 2 & 3 4 SL80486DX4 2 & 3 1 & 2, 3 & Open 2 & 3 4 P24D 2 & 3 1 & 2, 3 & 2 & 3 2 & 3 4 Note: Pins designated should be in the closed position. CPU TYPE SELECTION (CON’T) Type JC5 JC6 JC7 JC8 JC9 80486SX 1 & 2 Open 1 & 2 Open Open SL80486SX 2 & 3 2 & 3 1 & 2 Closed Open AM486DX 1 & 2 Open 1 & 2 Open Open 80486DX 1 & 2 Open 1 & 2 Open Open SL80486DX 2 & 3 2 & 3 1 & 2 Closed Open CX486DX2 4 & 5 4 & 5 2 & 3 Open Closed AM486DXL 1 & 2 1 & 2 1 & 2 Open Open AM486DX2 1 & 2 Open 1 & 2 Open Open 80486DX2 1 & 2 Open 1 & 2 Open Open SL80486DX2 2 & 3 2 & 3 1 & 2 Closed Open SL80486DX4 2 & 3 2 & 3 1 & 2 Closed Open P24D 2 & 3 2 & 3 2 & 3, Closed Open 4 & 5 Note: Pins designated should be in the closed position. CPU VOLTAGE SELECTION Voltage J4 JP8 3.45v Pins 4 & 10, 5 & 11, 6 Open & 12 closed 3.6v Pins 4 & 10, 5 & 11, 6 Closed & 12 closed » 5v Pins 1 & 7, 2 & 8, 3 & Open 9 closed DMA CHANNEL SELECTION Channel JP17 JP18 JP23 JP24 1 Closed Closed Open Open » 3 Open Open Closed Closed