ADVANCED LOGIC RESEARCH, INC. EXPRESS Processor 80486SX/80487SX/80486DX/80486DX2 Processor Speed 25/33/40/50(internal)/66(internal)MHz Chip Set ALR Max. Onboard 36MB DRAM Cache 128/256KB BIOS Phoenix Dimensions 330mm x 218mm I/O Options 32-bit VESA local bus slot, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location VGA port CN1 VGA feature connector CN8 Parallel port CN2 IDE interface LED J1 Serial port 2 CN3 Power LED & keylock J2 Serial port 1 CN4 Speaker J3 PS/2 mouse port CN5 Reset switch J4 IDE interface CN6 32-bit VESA Local bus SL1 slot Floppy drive CN7 interface USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation JP3 Open CMOS memory clear JP3 Closed » Port select 210H W1 Closed Port select 310H W1 Open » On board VGA enabled W2 Closed On board VGA disabled W2 Open » Factory configured - do not W5 Open alter » SIMM type select single W6 Open SIMM type select double W6 Closed » Video mode select standard W7 Open Video mode select VESA W7 Closed » Video type select non interlaced W8 Open Video type select interlaced W8 Closed » Monitor type select color W9 Closed Monitor type select monochrome W9 Open » Factory configured - do not W19 Open alter » Factory configured - do not W28 Open alter » 80486 CPU installed W29 Closed 80486 CPU not installed W29 Open Note: The location of W5 is unknown. DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 4MB (8) 512K x 8 NONE NONE 8MB (8) 512K x 8 (1) 1M x 36 NONE 12MB (8) 512K x 8 (1) 1M x 36 (1) 1M x 36 20MB (8) 512K x 8 (1) 4M x 36 NONE 24MB (8) 512K x 8 (1) 1M x 36 (1) 4M x 36 36MB (8) 512K x 8 (1) 4M x 36 (1) 4M x 36 Note: Bank 0 is factory installed and is not configurable. CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 NONE (1) 8K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 CACHE JUMPER CONFIGURATION Size W13 W16 W17 W18 128KB pins 2 & 3 pins 1 & 2 Open Closed closed closed 256KB pins 1 & 2 pins 2 & 3 Closed Closed closed closed CPU TYPE CONFIGURATION Type W11 W12 W24 W27 80486SX Closed pins 2 & 3 Open Open (PQFP) closed 80486SX Open pins 1 & 2 Open Closed (PGA) closed 80487SX Closed pins 1 & 2 pins 2 & 3 Closed (PGA) closed closed 80486DX Closed pins 2 & 3 Open Open (PQFP) closed 80486DX Closed pins 1 & 2 pins 1 & 2 Closed (PGA) closed closed CPU SPEED CONFIGURATION Speed W20 W21 W22 W23 25MHz Open Closed Open Closed 33MHz Open Open Closed Closed 40MHz Open Closed Open Open 50iMHz Open Closed Open Closed 66iMHz Open Open Closed Closed