ADVANCED INTEGRATION RESEARCH, INC. 486MI REV. 2.2 Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2/80486DX4/Pentium Overdrive Processor 8/10/12/16/20/25/33/40I/40/50(internal)/60/66(internal)/66MHz Speed Chip Set SIS Max. 64MB Onboard DRAM Cache 64/128/256/512KB BIOS AMI Dimensions 330mm x 218mm I/O 32-bit VESA local bus slots (3), floppy drive interfaces (2), Options green PC connector, IDE interface, parallel port, serial ports (2) NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 CN1 Reset switch J2 Serial port 2 CN2 Turbo switch J3 Parallel port CN3 Turbo LED J4 IDE interface CN4 Speaker J5 Floppy drive CN5 IDE interface LED J6 interface 1 Floppy drive CN6 Power LED & keylock J7 interface 2 Green PC connector J1 32-bit VESA local bus SL1 - SL3 slots USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not JP8 pins 1 & 2 alter closed » Factory configured - do not JP9 pins 1 & 2 alter closed » Flash BIOS write protect enabled JP17 pins 1 & 2 closed Flash BIOS write protect JP17 pins 2 & 3 disabled closed » CMOS memory normal operation JP20 pins 1 & 2 closed CMOS memory clear JP20 pins 2 & 3 closed » VESA IDE interface enabled JP22 pins 1 & 2 closed VESA IDE interface disabled JP22 pins 2 & 3 closed » Factory configured - do not JP28 Open alter » Factory configured - do not JP29 Open alter » Parallel port IRQ select IRQ7 JP30 pins 1 & 2 closed Parallel port IRQ select IRQ5 JP30 pins 2 & 3 closed » System wake up IRQ select IRQ4 JP31 pins 1 & 2 (COM1 & COM2) closed System wake up IRQ select IRQ3 JP31 pins 2 & 3 (COM2 & COM4) closed » Factory configured - do not JP37 Open alter DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 2MB (1) 512K x NONE NONE NONE 36 4MB (1) 512K x NONE (1) 512K x NONE 36 36 4MB (1) 1M x 36 NONE NONE NONE 6MB (1) 512K x NONE (1) 1M x 36 NONE 36 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 8MB (1) 2M x 36 NONE NONE NONE 10MB (1) 512K x NONE (1) 1M x 36 (1) 1M x 36 36 10MB (1) 512K x NONE (1) 2M x 36 NONE 36 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE 12MB (1) 2M x 36 NONE (1) 1M x 36 NONE 16MB (1) 4M x 36 NONE NONE NONE 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB (1) 2M x 36 NONE (1) 1M x 36 (1) 1M x 36 16MB (1) 2M x 36 NONE (1) 2M 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 (1) 2M x 36 NONE (1) 4M x 36 NONE 32MB (1) 8M x 36 NONE NONE NONE 32MB (1) 4M x 36 (1) 4M x 36 NONE NONE 36MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 NONE 40MB (1) 2M x 36 NONE (1) 4M x 36 (1) 4M x 36 40MB (1) 2M x 36 (1) 8M x 36 NONE NONE 40MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 48MB (1) 8M x 36 NONE (1) 4M x 36 NONE DRAM CONFIGURATION (CON'T) Size Bank 0 Bank 1 Bank 2 Bank 3 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 NONE (1) 4M x 36 (1) 4M x 36 64MB (1) 8M x 36 NONE (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) 32K 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 JP10 JP11 JP12 JP13 JP14 JP15 64KB 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 128KB 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 256KB 2 & 3 2 & 3 1 & 2 2 & 3 2 & 3 2 & 3 512KB 2 & 3 2 & 3 2 & 3 1 & 2 1 & 2 2 & 3 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JP1 JP2 JP38 80486SX Open pins 2 & 3 pins 1 & 2 closed closed 80487SX pins 2 & 3 pins 1 & 2, 3 & pins 1 & 2 closed 4 closed closed ODP486SX pins 2 & 3 pins 1 & 2, 3 & pins 1 & 2 closed 4 closed closed 80486DX/DX2 pins 1 & 2 pins 1 & 2, 3 & pins 1 & 2 closed 4 closed closed 80486DX4 pins 1 & 2 pins 1 & 2, 3 & Open closed 4 closed Pentium Overdrive pins 2 & 3 pins 1 & 2, 3 & pins 1 & 2 closed 4 closed closed CPU CLOCK CONFIGURATION (80486DX4 ONLY) Speed External clock Internal clock JP3 speed speed 3x 25/33MHz 75/100MHz Open 2.5x 33MHz 83MHz pins 2 & 3 closed 2x 50MHz 100MHz pins 1 & 2 closed CPU SPEED CONFIGURATION Speed JP5 JP6 JP7 ID3 25MHz Closed Closed Closed pins 1 & 2 closed 33MHz Closed Closed Open pins 1 & 2 closed 40MHz Closed Open Closed pins 2 & 3 closed 50iMHz Closed Closed Closed pins 1 & 2 closed 50MHz Closed Open Open pins 2 & 3 closed 66iMHz Closed Closed Open pins 1 & 2 closed CPU VOLTAGE CONFIGURATION Voltage W1 3.3v pins 1 & 3, 2 & 4 closed 5v pins 3 & 5, 4 & 6 closed VESA WAIT STATE CONFIGURATION Wait states ID2 0 wait states pins 1 & 2 closed 1 wait state pins 2 & 3 closed IDE SPEED CONFIGURATION Speed JP23 JP24 0 pins 1 & 2 closed pins 1 & 2 closed 2 pins 2 & 3 closed pins 1 & 2 closed 4 pins 1 & 2 closed pins 2 & 3 closed 6 pins 2 & 3 closed pins 2 & 3 closed ECP MODE CONFIGURATION Setting Mode JP25 JP26 JP27 Enabled ECP mode disabled Open Open 2 & 3 for parallel port Disabled ECP mode enabled 1 & 2 1 & 2 1 & 2 (DMA 3 used) Disabled ECP mode enabled 2 & 3 2 & 3 1 & 2 (DMA 1 used) Note: If setting is enabled- 4 floppy drives are used. Pins designated should be in the closed position.