MICRO-STAR INTERNATIONAL CO., LTD. MS-4145 Processor 80486SX/SL80486SX/AM486DX/(SL)AM486DX/80486DX/ SL80486DX/CX486DX2/IBM486DX2/SGS486DX2/TI486DX2/ AM486DX2/ODP486DX2/80486DX2/SL80486DX2/SL80486DX4/ P24D/P24T/CX5X86/(SL)AM X5 Processor 25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/ Speed 100(internal)/120(internal)/133(internal)/160(internal)MHz Chip Set ALI Video Chip None Set Maximum 64MB Onboard Memory Maximum None Video Memory Cache 128/256/512KB BIOS Award Dimensions 220mm x 220mm I/O Options 32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, serial ports (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 CN1 Green PC LED JG1 Serial port 2 CN2 Power LED & JFP/pins 1 - keylock 5 Floppy drive CN3 Speaker JFP/pins 7 - interface 10 Parallel port CN4 Turbo LED JFP/pins 12 & 13 IDE interface 2 CN5 Turbo switch JFP/pins 15 - 17 IDE interface 1 CN6 Reset switch JFP/pins 19 & 20 Chassis fan power FAN IDE interface LED JFP/pins 21 & 22 External battery JBAT 32-bit PCI slots PC1 – PC3 USER CONFIGURABLE SETTINGS Function Label Position » Battery type select internal JBAT Pins 2 & 3 closed Battery type select external JBAT Closed » Parallel port address select JIRQ Pins 1 & 2 closed 378 Parallel port address select JIRQ Pins 2 & 3 closed 278 » Factory configured – do not JS3 Unidentified alter DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 4MB (1) 1M x 36 None None 8MB (1) 1M x 36 (1) 1M x 36 None 8MB (1) 2M x 36 None None 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 12MB (1) 1M x 36 (1) 2M x 36 None 16MB (1) 4M x 36 None None 16MB (1) 2M x 36 (1) 2M x 36 None 16MB (1) 1M x 36 (1) 2M x 36 (1) 1M x 36 20MB (1) 1M x 36 (1) 4M x 36 None 24MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 24MB (1) 4M x 36 (1) 2M x 36 None 32MB (1) 4M x 36 (1) 4M x 36 None 32MB (1) 8M x 36 None None 36MB (1) 1M x 36 (1) 8M x 36 None 40MB (1) 2M x 36 (1) 8M x 36 None 40MB (1) 4M x 36 (1) 2M x 36 (1) 4M x 36 40MB (1) 1M x 36 (1) 8M x 36 (1) 1M x 36 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 48MB (1) 4M x 36 (1) 8M x 36 None 64MB (1) 8M x 36 (1) 8M x 36 None 64MB (1) 4M x 36 (1) 8M x 36 (1) 4M x 36 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 None (1) 8K/16K/32K x 8 256KB (A) (4) 32K x 8 (4) 32K x 8 (1) 8K/16K/32K x 8 256KB (B) (2) 64K x 32 None (1) 8K/16K/32K x 8 Note: Board also accepts 512KB cache. The chip sizes and jumper settings are unidentified. CACHE JUMPER CONFIGURATION Size JS1 JS2 JS4 128KB Pins 1 & 2 Pins 1 & 2 Pins 2 & 3 closed closed closed 256KB (A) Pins 2 & 3 Pins 1 & 2 Pins 1 & 2 closed closed closed 256KB (B) Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed CPU SPEED SELECTION Speed JK1 JK2 25MHz Open Pins 1 & 2 closed 33MHz Pins 1 & 2, 3 & 4 Pins 1 & 2 closed closed 40MHz Pins 1 & 2 closed Pins 2 & 3, 4 & 5 closed 50iMHz Open Pins 1 & 2 closed 66iMHz Pins 1 & 2, 3 & 4 Pins 1 & 2 closed closed 75iMHz Open Pins 1 & 2 closed 80iMHz Pins 1 & 2 closed Pins 2 & 3, 4 & 5 closed 100iMHz Pins 1 & 2, 3 & 4 Pins 1 & 2 closed closed 120iMHz Pins 1 & 2 closed Pins 2 & 3, 4 & 5 closed 133iMHz Pins 1 & 2, 3 & 4 Pins 1 & 2 closed closed 160iMHz Pins 1 & 2 closed Pins 2 & 3, 4 & 5 closed CPU TYPE SELECTION Type JC1 JC2 JC3 JC4 JC5 80486SX Open Open Open 1 & 2 2 & 3 SL80486SX Open Open Open 1 & 2 2 & 3 AM486DX Open Open Open 2 & 3 1 & 2 (SL)AM486DX Open Open Open 2 & 3 1 & 2 80486DX Open Open Open 2 & 3 1 & 2 SL80486DX Open Open Open 2 & 3 1 & 2 CX486DX2 Open Closed Open 2 & 3 1 & 2 IBM486DX2 Open Closed Open 2 & 3 1 & 2 SGS486DX2 Open Closed Open 2 & 3 1 & 2 TI486DX2 Open Closed Open 2 & 3 1 & 2 AM486DX2 Open Open Open 2 & 3 1 & 2 ODP486DX2 Open Open Open 2 & 3 1 & 2 80486DX2 Open Open Open 2 & 3 1 & 2 SL80486DX2 Open Open Open 2 & 3 1 & 2 SL80486DX4 Open Open Open 2 & 3 1 & 2 P24D 1 & 2, 3 Open Open 2 & 3 1 & 2 & 4 P24T 1 & 2, 3 Open Open 2 & 3 1 & 2 & 4 CX5X86 1 & 2, 3 Open Open 2 & 3 1 & 2 & 4 (SL)AM X5 1 & 2, 3 Open Open 2 & 3 1 & 2 & 4 Note: Pins designated should be in the closed position. CPU TYPE SELECTION Type R1 R2 R2 80486SX Pins 1 – 10 Not installed Not installed closed SL80486SX Pins 3 – 13 Not installed Not installed closed AM486DX Pins 1 – 10 Not installed Not installed closed (SL)AM486DX Pins 1 – 10 Not installed Not installed closed 80486DX Pins 1 – 10 Not installed Not installed closed SL80486DX Pins 3 – 13 Not installed Not installed closed CX486DX2 Installed Not installed Not installed IBM486DX2 Installed Not installed Not installed SGS486DX2 Installed Not installed Not installed TI486DX2 Installed Not installed Not installed AM486DX2 Pins 1 – 10 Not installed Not installed closed ODP486DX2 Pins 3 – 13 Not installed Not installed closed 80486DX2 Pins 1 – 10 Not installed Not installed closed SL80486DX2 Pins 3 – 13 Not installed Not installed closed SL80486DX4 Pins 3 – 13 Not installed Not installed closed P24D Pins 5 – 14 Not installed Not installed closed P24T Pins 5 – 14 Not installed Not installed closed CX5X86 Pins 3 – 13 Not installed Not installed closed (SL)AM X5 Pins 5 – 14 Not installed Not installed closed CPU VOLTAGE SELECTION Voltage JP1 JV1 » 3v Open Open 4v Closed Open 5v Open Pins 1 & 2, 3 & 4, 5 & 6 closed DMA CHANNEL SELECTION Channel JP3 JP4 1 Pins 2 & 3 closed Pins 2 & 3 closed 3 Pins 1 & 2 closed Pins 1 & 2 closed