INTERLOGIC INDUSTRIES ASC486 VER. C Processor 80486SX/CX486S/80487SX/CX486S2/80486DX/80486DX2/Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)MHz Speed Chip Set ALI Max. Onboard 128MB DRAM Cache 32/64/128/256/512/1024KB BIOS AMI Dimensions 312mm x 122mm I/O Options Floppy drive interface, IDE interface, parallel port, serial ports (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Keyboard connector CN1 Serial port 1 CN9 Power LED & keylock CN2 Serial port 2 CN10 Floppy drive interface CN3 Speaker JP1 IDE interface LED CN4 Reset switch JP2 Parallel port CN5 IDE interface JP3 PC/104 Module connector CN6 Turbo switch JP4 Keyboard port CN7 Turbo LED JP5 USER CONFIGURABLE SETTINGS Function Jumper Position » Battery type select external JP11 pins 2 & 3 closed Battery type select internal JP11 pins 1 & 2 closed » Clock system select double JP15 & JP46 pins 1 & 2 frequency closed Clock system select single JP15 & JP46 pins 2 & 3 frequency closed » CMOS memory normal operation JP28 Open CMOS memory clear JP28 Closed » Parallel port interrupt select JP31 pins 1 & 2 IRQ7 closed Parallel port interrupt select JP31 pins 2 & 3 IRQ5 closed » IDE interface enabled JP32 pins 1 & 2 closed IDE interface disabled JP32 pins 2 & 3 closed » Parallel port address select JP33 pins 1 & 2 378h-37Fh closed Parallel port address select JP33 pins 2 & 3 278h-27Fh closed » Floppy drive interface enabled JP34 pins 1 & 2 closed Floppy drive interface disabled JP34 pins 2 & 3 closed » Monitor type select color JP38 Closed Monitor type select monochrome JP38 Open » Parallel port unidirectional JP39 Closed Parallel port bidirectional JP39 Open » XT IDE interface disabled JP40 pins 2 & 3 closed XT IDE interface enabled JP40 pins 1 & 2 closed » Parallel port enabled JP43 pins 1 & 2 closed Parallel port disabled JP43 pins 2 & 3 closed SERIAL PORT CONFIGURATION Port 1 (CN9) Port 2 JP41 JP42 JP44 JP45 (CN10) 3F8h-3FFh 2F8h-2FFh 1 & 2 1 & 2 1 & 2 1 & 2 3F8h-3FFh Disabled 1 & 2 1 & 2 N/A 2 & 3 Disabled 2F8h-2FFh 2 & 3 N/A 1 & 2 1 & 2 3E8h-3EFh 2E8h-2EFh 1 & 2 2 & 3 2 & 3 1 & 2 3E8h-3EFh Disabled 1 & 2 2 & 3 N/A 2 & 3 Disabled 2E8h-2EFh 2 & 3 N/A 2 & 3 1 & 2 Disabled Disabled 2 & 3 N/A N/A 2 & 3 Note: Pins designated should be in the closed position. SERIAL PORT INTERRUPT SELECT Port 1 (CN9) Port 2 (CN10) JP29 JP30 IRQ4 IRQ3 pins 1 & 2 pins 2 & 3 closed closed IRQ3 IRQ4 pins 2 & 3 pins 1 & 2 closed closed DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (4) 256K x 9 NONE 2MB (4) 256K x 9 (4) 256K x 9 3MB (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 NONE 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE 20MB (4) 1M x 9 (4) 4M x 9 32MB (4) 4M x 9 (4) 4M x 9 64MB (4) 16M x 9 NONE 128MB (4) 16M x 9 (4) 16M x 9 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 32KB (4) 8K x 8 NONE (1) 16K x 4 64KB (4) 8K x 8 (4) 8K x 8 (1) 16K x 4 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) 64K x 4 1MB (4) 128K x 8 (4) 128K x 8 (1) 64K x 4 CACHE JUMPER CONFIGURATION Size JP22 32KB Open 64KB pins 9 & 10 closed 128KB pins 7 & 8, 9 & 10 closed 256KB pins 5 & 6, 7 & 8, 9 & 10 closed 512KB pins 3 & 4, 5 & 6, 7 & 8, 9 & 10 closed 1MB pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10 closed CACHE JUMPER CONFIGURATION (CON’T) Size JP24 JP25 JP26 JP27 32KB Open Open pins 2 & 3 pins 1 & 2 closed closed 64KB Open Open pins 1 & 2 pins 1 & 2 closed closed 128KB Open pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed 256KB Open pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed 512KB pins 1 & 2 pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed closed 1MB pins 1 & 2 pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed closed CPU TYPE CONFIGURATION Type JP6 JP7 JP8 JP12 JP13 JP14 80486SX 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 80487SX 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 CX486S 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 2 & 3 CX486S2 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 80486DX/DX2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 Overdrive 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION (CON’T) Type JP16 JP17 JP18 JP19 JP20 JP21 80486SX Open Open Closed Open Open Open 80487SX 1 & 2 Open Closed Open Open Closed CX486S 3 & 4 Open Open Closed Closed Open CX486S2 3 & 4 Closed Open Closed Closed Open 80486DX/DX2 2 & 3 Open Closed Open Open Closed Overdrive 1 & 2 Closed Closed Open Open Closed Note: Pins designated should be in the closed position. CPU SPEED CONFIGURATION (EXTERNAL) Speed JP23/1 & 2 JP23/3 & 4 JP23/5 & 6 JP23/7 & 8 25MHz Open Open Open Closed 33MHz Closed Open Open Open 40iMHz Closed Closed Closed Open 40MHz Closed Closed Open Open 50iMHz Open Closed Open Open 50MHz Open Open Closed Closed 66iMHz Closed Open Closed Open Overdrive Open Closed Closed Open CPU SPEED CONFIGURATION (INTERNAL) Speed JP9 JP10 40iMHz pins 1 & 2 closed pins 2 & 3 closed 50iMHz pins 2 & 3 closed pins 2 & 3 closed 66iMHz pins 2 & 3 closed pins 1 & 2 closed WATCH DOG TIMER SETTING Setting JP35 Reset when WDT time out pins 1 & 2 closed Activate NMI to CPU when WDT time pins 2 & 3 closed out WDT disabled Open WATCH DOG TIME OUT PERIOD Time out period JP36 JP37 500ms pins 1 & 2 closed Closed 1 second pins 1 & 2 closed Open 2.5 seconds pins 2 & 3 closed Closed 5 seconds pins 2 & 3 closed Open