COMPUTREND SYSTEMS, INC. ALI 486 NONCACHE Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2 Processor Speed 16/20/25/33/50(internal)/66(internal) Chip Set ALI Max. Onboard DRAM 32MB SRAM Cache None BIOS AMI Dimensions 220mm x 220mm I/O Options Auxiliary keyboard connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Auxiliary J1 Turbo switch J4/pins 15 - 17 keyboard Power LED & J4/pins 1 - 5 Turbo LED J4/pins 12 & 13 keylock Speaker J4/pins 7 - 10 External battery J3 Reset switch J4/pins 19 & 20 USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation J3 connected CMOS memory clear J3 pins 3 & 4 closed » Factory configured - do not JP1 open alter » Monitor type select monochrome JP2 pins 1 & 2 closed Monitor type select color JP2 pins 2 & 3 closed CPU JUMPER CONFIGURATION CPU Location JP3 JP4 JP5 JP6 JP7 80486DX2 PGA open pins 2 pins 2 pins 2 pins 2 & 3 & 3 & 3 & 3 ODP486SX PGA open pins 2 pins 2 pins 1 pins 2 & 3 & 3 & 2 & 3 80486DX PGA open pins 2 pins 2 pins 2 pins 2 & 3 & 3 & 3 & 3 80487SX PGA open pins 2 pins 2 pins 1 pins 2 & 3 & 3 & 2 & 3 80486SX PQFP closed pins 1 pins 1 open pins 1 & 2 & 2 & 2 Note:Pins designated should be in the closed position. CPU SPEED/BUS SPEED CONFIGURATION CPU Speed Bus Clock JP8 JP9 JP10 JP11 16MHz SYS/4 pins 2 & pins 2 & pins 1 & pins 2 & 3 3 2 3 20MHz SYS/5 pins 2 & pins 1 & pins 1 & pins 2 & 3 2 2 3 25MHz SYS/6 pins 1 & pins 2 & pins 1 & pins 2 & 2 3 2 3 33MHz SYS/8 pins 1 & pins 1 & pins 1 & pins 2 & 2 2 2 3 40MHz SYS/5 pins 2 & pins 1 & pins 2 & pins 1 & 3 2 3 2 Note:Pins designated should be in the closed position. DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (4) 256K x 9 NONE 2MB (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 NONE 5MB (4) 256K x 9 (4) 1M x 9 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE 32MB (4) 4M x 9 (4) 4M x 9