ACER, INC. ISA486GSi MODEL IP25A Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2 Processor Speed 20/25/33/50(internal)/66(internal) Chip Set ALI Max. Onboard DRAM 32MB SRAM Cache None BIOS Acer Dimensions 220mm x 220mm I/O Options None NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location External battery J3 Reset switch J4/11 & 12 Power LED & keylock J4/1 - 5 Turbo switch J4/14 - 16 Speaker J4/7 - 10 Turbo LED J4/18 & 19 USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation JP1 open CMOS memory clear JP1 closed » Battery select internal J3 pins 2 & 3 closed Battery select external J3 connected CPU TYPE CONFIGURATION CPU JP6 JP7 80486DX2 pins 2 & 3 closed pins 2 & 3 closed ODP486SX open pins 1 & 2 closed 80486DX pins 2 & 3 closed pins 2 & 3 closed 80487SX pins 1 & 2 closed pins 1 & 2 closed 80486SX open pins 1 & 2 closed CPU SPEED CONFIGURATION CPU Speed OSC1 JP8 JP9 JP10 JP11 20MHz 40MHz pins 2 & pins 1 & pins 1 & pins 2 & 3 2 2 3 25MHz 50MHz pins 1 & pins 2 & pins 1 & pins 2 & 2 3 2 3 33MHz 66MHz pins 1 & pins 1 & pins 1 & pins 2 & 2 2 2 3 50MHz 50MHz pins 1 & pins 2 & pins 1 & pins 2 & 2 3 2 3 60MHz 66MHz pins 1 & pins 1 & pins 1 & pins 2 & 2 2 2 3 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) 1M x 9 (4) 256K 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