ACER, INC. ACERPOWER 486 (V20 PROJECT) Processor 80486SX/80486SX2/80486DX/80486DX2/80486DX4/Pentium Overdrive Processor 25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz Speed Chip Set Unidentified Max. 64MB Onboard DRAM Cache 128/256/512KB BIOS Acer Dimensions 330mm x 218mm I/O 32-bit VESA local bus slot, 32-bit PCI slots (3), green PC Options connector, PS/2 mouse port NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location PS/2 mouse port CN1 32-bit VESA local bus SL1 slot 32-bit PCI slots PC1 - PC3 USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not CN8 N/A alter » Factory configured - do not CN9 N/A alter » Factory configured - do not CN10 N/A alter » Password enabled JP1 pins 1 & 2 closed Password disabled JP1 pins 2 & 3 closed » BIOS type select Acer JP2 pins 1 & 2 closed BIOS type select OEM JP2 pins 2 & 3 closed » Factory configured - do not JP3 pins 3 & 4 closed alter » Factory configured - do not JP4 pins 1 & 2, 3 & 4, alter 5 & 6 closed Factory configured - do not JP6 pins 2 & 3 closed alter » Factory configured - do not JP7 pins 2 & 3 closed alter » M5115 enabled JP8 pins 1 & 2 closed M5115 disabled JP8 pins 2 & 3 closed » Factory configured - do not JP10 pins 1 & 2 closed alter » Local bus IDE I/O address JP11 pins 1 & 2 closed select 0FXH Local bus IDE I/O address JP11 pins 2 & 3 closed select 07XH » Local bus IDE interface JP12 pins 2 & 3 closed enabled Local bus IDE interface JP12 pins 1 & 2 closed disabled » Reset button enabled JP23 pins 1 & 2 closed Reset button disabled JP23 pins 2 & 3 closed » Power saving feature disabled JP24 pins 2 & 3 closed Power saving feature enabled JP24 pins 1 & 2 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 4MB (1) 1M x 36 NONE NONE NONE 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE 12MB (1) 1M x 36 NONE (1) 2M x 36 NONE 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB (1) 2M x 36 NONE (1) 2M x 36 NONE 16MB (1) 4M x 36 NONE NONE NONE 32MB (1) 4M x 36 (1) 4M x 36 NONE NONE 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 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 NONE (1) 32K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 512KB NONE (4) 128K x 8 (1) 32K x 8 Note: The location of the TAG is unidentified. CACHE JUMPER CONFIGURATION Size J13 J15 J16 128KB pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed 256KB pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed 512KB pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed CPU TYPE CONFIGURATION Type JP9 JP20 80486SX pins 2 & 3 closed pins 1 & 2 closed 80486SX2 pins 2 & 3 closed pins 1 & 2 closed 80486DX pins 2 & 3 closed pins 1 & 2 closed 80486DX2 pins 2 & 3 closed pins 1 & 2 closed 80486DX4 pins 2 & 3 closed pins 1 & 2 closed Pentium Overdrive pins 1 & 2 closed pins 2 & 3 closed CPU TYPE CONFIGURATION Type JP26 JP27 Intel pins 1 & 2 closed pins 1 & 2 closed AMD pins 2 & 3 closed pins 2 & 3 closed CPU SPEED CONFIGURATION Speed JP17 JP21 25MHz pins 1 & 5 closed pins 2 & 3 closed 33MHz pins 2 & 6 closed pins 2 & 3 closed 50iMHz pins 1 & 5 closed pins 2 & 3 closed 66iMHz pins 2 & 6 closed pins 2 & 3 closed 75iMHz pins 1 & 5 closed pins 2 & 3 closed 100iMHz pins 2 & 6 closed pins 2 & 3 closed CPU SPEED CONFIGURATION (80486DX4 ONLY) Speed JP22 2.0x pins 1 & 2 closed 2.5x pins 2 & 3 closed 3.0x pins 3 & 4 closed