ADVANCED INTEGRATION RESEARCH, INC. 486PI REV. 1.20 Processor 80486SX/CX486DX/AM486DX/80486DX/CX486DX2/AM486DX2/80486DX2/ AM486DX4/80486DX4/Pentium Overdrive Processor 25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz Speed Chip Set Intel Max. 64MB Onboard DRAM Cache 128/256/512KB BIOS AMI Dimensions 330mm x 218mm I/O Parallel port, serial ports (2), 32-bit VESA local bus slots Options (2), 32-bit PCI slots (3), floppy drive interface, IDE interface NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Floppy drive interface CN1 Speaker J3 Parallel port CN2 Turbo switch J4 IDE interface CN3 Turbo LED J5 Serial port 1 CN4 Reset switch J6 Serial port 2 CN5 32-bit PCI slots PC1 - PC3 Power LED & keylock J1 32-bit VESA local SL1 & SL2 bus slots IDE interface LED J2 USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation JP1 pins 1 & 2 closed CMOS memory clear JP1 pins 2 & 3 closed » Parallel port IRQ select IRQ7 JP3 pins 1 & 2 closed Parallel port IRQ select IRQ5 JP3 pins 2 & 3 closed » Monitor type select JP5 Open monochrome/EGA/VGA Monitor type select CGA JP5 Closed » Factory configured - do not alter JP17 Open » Factory configured - do not alter JP29 Open DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 2MB (1) 256K x (1) 256K x NONE NONE 36 36 2MB (1) 512K x NONE NONE NONE 36 3MB (1) 256K x (1) 256K x (1) 256K x NONE 36 36 36 3MB (1) 512K x (1) 256K x NONE NONE 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 4MB (1) 512K x (1) 512K x NONE NONE 36 36 4MB (1) 512K x (1) 256K x NONE (1) 256K x 36 36 36 5MB (1) 256K x (1) 1M x 36 NONE NONE 36 5MB (1) 512K x (1) 512K x NONE (1) 256K x 36 36 36 6MB (1) 512K x (1) 1M x 36 NONE NONE 36 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 8MB (1) 2M x 36 NONE NONE NONE 9MB (1) 256K x (1) 1M x 36 (1) 1M x 36 NONE 36 9MB (1) 2M x 36 (1) 256K x NONE NONE 36 10MB (1) 512K x (1) 2M x 36 NONE NONE 36 10MB (1) 512K x (1) 1M x 36 NONE (1) 1M x 36 36 10MB (1) 2M x 36 (1) 256K x NONE (1) 256K x 36 36 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE 12MB (1) 2M x 36 (1) 1M x 36 NONE NONE 13MB (1) 256K x (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 36 14MB (1) 512K x (1) 2M x 36 NONE (1) 1M x 36 36 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB (1) 2M x 36 (1) 2M x 36 NONE NONE 16MB (1) 2M x 36 (1) 1M x 36 NONE (1) 1M x 36 16MB (1) 4M x 36 NONE NONE NONE 17MB (1) 4M x 36 (1) 256K x NONE NONE 36 18MB (1) 4M x 36 (1) 256K x NONE (1) 256K x 36 36 20MB (1) 4M x 36 (1) 1M x 36 NONE NONE 24MB (1) 4M x 36 (1) 1M x 36 NONE (1) 1M x 36 32MB (1) 4M x 36 (1) 4M x 36 NONE NONE 32MB (1) 8M x 36 NONE NONE NONE 33MB (1) 8M x 36 (1) 256K x NONE NONE 36 34MB (1) 8M x 36 (1) 256K x NONE (1) 256K x 36 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 36MB (1) 8M x 36 (1) 1M x 36 NONE NONE 40MB (1) 8M x 36 (1) 1M x 36 NONE (1) 1M x 36 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 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 NONE (2) 32K x 8 256KB (4) 32K x 8 (4) 32K x 8 (2) 32K x 8 256KB (4) 64K x 8 NONE (2) 32K x 8 512KB (4) 128K x 8 NONE (2) 32K x 8 CACHE JUMPER CONFIGURATION Size JP8 JP9 JP11 JP12 128KB Closed Open Open Open 256KB Open Closed Closed Open 256KB Closed Open Closed Open 512KB Closed Open Closed Closed CPU TYPE CONFIGURATION Type JP10 JP25 JP27 JP28 JP30 80486SX Closed Open Open 2 & 3 1 & 2 CX486DX Closed Closed Closed 1 & 2 2 & 3 (3.3v) CX486DX (5v) Closed Closed Open 1 & 2 2 & 3 AM486DX Closed Closed Open 1 & 2 2 & 3 80486DX Closed Open Open 1 & 2 1 & 2 CX486DX2 Closed Closed Closed 1 & 2 2 & 3 (3.3v) CX486DX2 Closed Closed Open 1 & 2 2 & 3 (5v) AM486DX2 Closed Open Open 1 & 2 2 & 3 80486DX2 Closed Open Open 1 & 2 1 & 2 AM486DX4 Closed Closed Open 1 & 2 2 & 3 80486DX4 Closed Open Open 1 & 2 1 & 2 P24T Closed Open Open 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed JP19 JP20 JP21 JP22 25MHz Closed Open Open pins 2 & 3 closed 33MHz Open Closed Closed Closed 50iMHz Closed Open Open pins 2 & 3 closed 66iMHz Open Closed Closed Closed 75iMHz Closed Open Open pins 2 & 3 closed 100iMHz Open Closed Closed Closed DMA/ECP CONFIGURATION Setting JP4 JP6 JP7 Disabled Open Open pins 1 & 2 closed ECP enabled DMA pins 2 & 3 pins 2 & 3 pins 2 & 3 1 closed closed closed ECP enabled DMA pins 1 & 2 pins 1 & 2 pins 2 & 3 3 closed closed closed