ADVANCED INTEGRATION RESEARCH, INC. 486MI REV. 1.11 Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2 Processor Speed 20/25/33/40/50(internal)/50/66(internal)MHz Chip Set SIS Max. Onboard 64MB DRAM Cache 64/128/256/512KB BIOS AMI Dimensions 330mm x 218mm I/O Options 32-bit VESA local bus slots (3), floppy drive interface, game port, IDE interface, parallel port, serial ports (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location IDE port CN1 Green PC LED J3 Floppy port CN2 Reset switch J4 Parallel port CN3 Turbo switch J5 Game port CN4 Turbo LED J6 Serial port 1 CN5 IDE interface LED J7 Serial port 2 CN6 32-bit VESA Local S1, S2 & S3 bus slots Speaker J1 Green PC connector W1 Power LED & keylock J2 USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not alter JP3 N/A » Factory configured - do not alter JP4 N/A » Factory configured - do not alter JP9 N/A » Monitor type select monochrome, JP16 Open VGA or EGA Monitor type select CGA JP16 Closed » Flash BIOS write protect enabled JP17 pins 1 & 2 closed Flash BIOS write protect disabled JP17 pins 2 & 3 closed » CMOS memory normal operation JP20 pins 1 & 2 closed CMOS memory clear JP20 pins 2 & 3 closed » IDE interface enabled JP29 pins 1 & 2 closed IDE interface disabled JP29 pins 2 & 3 closed » Parallel port select interrupt JP30 pins 1 & 2 IRQ7 closed Parallel port select interrupt JP30 pins 2 & 3 IRQ5 closed 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) 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 16MB (1) 4M x 36 None None 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) 4M x 36 (1) 4M x 36 None None 32MB (1) 8M x 36 None None None 36MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 None 40MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 40MB (1) 2M x 36 None (1) 4M x 36 (1) 4M x 36 40MB (1) 2M x 36 None (1) 8M x 36 None 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 None 48MB (1) 8M x 36 None (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 JUMPER CONFIGURATION Size JP10 JP11 JP12 JP13 JP14 JP15 64KB pins 1 & pins 1 & pins 1 & pins 2 & pins 1 & pins 1 & 2 2 2 3 2 2 128KB pins 2 & pins 1 & pins 1 & pins 1 & pins 1 & pins 2 & 3 2 2 2 2 3 256KB pins 2 & pins 2 & pins 1 & pins 2 & pins 2 & pins 2 & 3 3 2 3 3 3 256KB pins 2 & pins 2 & pins 2 & pins 1 & pins 1 & pins 2 & 3 3 3 2 2 3 Note:Pins designated should be in the closed position. CACHE SIZE 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 CPU TYPE CONFIGURATION Type JP1 JP2 80486SX Open pins 2 & 3 closed 80486DX pins 1 & 2 closed pins 1 & 2 and 3 & 4 closed 80487SX pins 2 & 3 closed pins 1 & 2 and 3 & 4 closed ODP486SX pins 2 & 3 closed pins 1 & 2 and 3 & 4 closed 80486DX2 pins 1 & 2 closed pins 1 & 2 and 3 & 4 closed CPU SPEED CONFIGURATION Speed JP5 JP6 JP7 JP26 JP27 JP28 20MHz Closed Open Open pins 2 pins 2 pins 1 & 3 & 3 & 2 25MHz Open Closed Closed pins 2 pins 2 pins 1 & 3 & 3 & 2 33MHz Open Closed Open pins 2 pins 2 pins 1 & 3 & 3 & 2 40MHz Open Open Closed pins 1 pins 1 pins 2 & 2 & 2 & 3 50i MHz Open Closed Closed pins 2 pins 2 pins 1 & 3 & 3 & 2 50MHz Open Open Open pins 1 pins 1 pins 2 & 2 & 2 & 3 66i MHz Open Closed Open pins 2 pins 2 pins 1 & 3 & 3 & 2 Note:Pins designated should be in the closed position. IDE RECOVERY TIME Speed Recovery Time JP22 JP23 JP24 <33mhz 9T, low speed pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed <33mhz 7T, middle pins 1 & 2 pins 2 & 3 pins 2 & 3 speed closed closed closed <33mhz 5T, high pins 2 & 3 pins 2 & 3 pins 2 & 3 speed closed closed closed >40mhz 13T, low pins 2 & 3 pins 2 & 3 pins 1 & 2 speed closed closed closed >40mhz 11T middle pins 1 & 2 pins 1 & 2 pins 2 & 3 speed closed closed closed >40mhz 9T high speed pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed VESA WAIT STATE/BUS SPEED (ID2 & ID3) CONFIGURATION Speed Setting ID2 ID3 <=33MHz 0 wait states pins 1 & 2 pins 1 & 2 closed closed >33MHz 1 wait state pins 2 & 3 pins 2 & 3 closed closed