SOYO COMPUTER CO., LTD. 486VESA (VER. 2.2) Processor CX486M6/CX486M7/80486SX/80486DX/80486DX2/80486DX4/P24D/Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz Speed Chip Set Unidentified Max. 128MB Onboard DRAM Cache 64/128/256KB BIOS Award Dimensions 254mm x 220mm I/O 32-bit VESA local bus slots (3), green PC connector Options NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Power LED & keylock J17 Turbo LED J22 Speaker J18 Green PC connector JP4 Reset switch J19 Green PC connector JP6 External battery J20 Green PC connector JP7 Turbo switch J21 32-bit VESA local bus SL1 - SL3 slots USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select monochrome JP3 Open Monitor type select color JP3 Closed » CMOS memory normal operation JP5 pins 1 & 2 closed CMOS memory clear JP5 pins 2 & 3 closed » Factory configured - do not JP17 pins 1 & 2 alter closed » Factory configured - do not JP27 pins 1 & 2 alter closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x NONE NONE NONE 36 2MB (1) 256K x (1) 256K x NONE NONE 36 36 2MB (1) 512K x NONE NONE NONE 36 4MB (1) 256K x (1) 256K x (1) 512K x NONE 36 36 36 4MB (1) 512K x (1) 512K x NONE NONE 36 36 4MB (1) 1M x 36 NONE NONE NONE 5MB (1) 256K x (1) 1M x 36 NONE NONE 36 6MB (1) 256K x (1) 256K x (1) 1M x 36 NONE 36 36 6MB (1) 512K x (1) 1M x 36 NONE NONE 36 8MB (1) 256K x (1) 256K x (1) 512K x (1) 1M x 36 36 36 36 8MB (1) 512K x (1) 512K x (1) 1M x 36 NONE 36 36 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 8MB (1) 2M x 36 NONE NONE NONE 10MB (1) 256K x (1) 256K x (1) 1M x 36 (1) 1M x 36 36 36 12MB (1) 512K x (1) 512K x (1) 1M x 36 (1) 1M x 36 36 36 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE 12MB (1) 1M x 36 (1) 2M x 36 NONE NONE 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB (1) 2M x 36 (1) 2M x 36 NONE NONE 16MB (1) 1M x 36 (1) 1M x 36 (1) 2M x 36 NONE 16MB (1) 4M x 36 NONE NONE NONE 17MB (1) 256K x (1) 4M x 36 NONE NONE 36 18MB (1) 256K x (1) 256K x (1) 4M x 36 NONE 36 36 18MB (1) 512K x (1) 4M x 36 NONE NONE 36 20MB (1) 512K x (1) 512K x (1) 4M x 36 NONE 36 36 20MB (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 NONE 20MB (1) 1M x 36 (1) 4M x 36 NONE NONE 24MB (1) 512K x (1) 512K x (1) 1M x 36 (1) 4M x 36 36 36 24MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 NONE 24MB (1) 1M x 36 (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 24MB (1) 2M x 36 (1) 4M x 36 NONE NONE 24MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 NONE 28MB (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 32MB (1) 2M x 36 (1) 2M x 36 (1) 4M x 36 NONE DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 32MB (1) 4M x 36 (1) 4M x 36 NONE NONE 32MB (1) 8M x 36 NONE NONE NONE 36MB (1) 512K x (1) 512K x (1) 4M x 36 (1) 4M x 36 36 36 36MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 NONE 36MB (1) 1M x 36 (1) 8M x 36 NONE NONE 40MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 40MB (1) 1M x 36 (1) 1M x 36 (1) 8M x 36 NONE 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 NONE 48MB (1) 2M x 36 (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 48MB (1) 2M x 36 (1) 2M x 36 (1) 8M x 36 NONE 48MB (1) 4M x 36 (1) 8M x 36 NONE NONE 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 4M x 36 (1) 4M x 36 (1) 8M x 36 NONE 64MB (1) 16M x 36 NONE NONE NONE 64MB (1) 8M x 36 (1) 8M x 36 NONE NONE 65MB (1) 256K x (1) 16M x 36 NONE NONE 36 68MB (1) 1M x 36 (1) 16M x 36 NONE NONE 68MB (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 NONE 72MB (1) 1M x 36 (1) 1M x 36 (1) 16M x NONE 36 72MB (1) 1M x 36 (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 80MB (1) 4M x 36 (1) 16M x 36 NONE NONE 80MB (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 NONE 80MB (1) 2M x 36 (1) 2M x 36 (1) 8M x 36 (1) 8M x 36 96MB (1) 4M x 36 (1) 4M x 36 (1) 16M x NONE 36 96MB (1) 4M x 36 (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 96MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 NONE 128MB (1) 16M x 36 (1) 16M x 36 NONE NONE 128MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 128KB (4) 32K x 8 NONE (1) 8K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 16K x 8 or (1) 32K x 8 256KB (4) 64K x 8 NONE (1) 16K x 8 or (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP9 JP10 JP13 64KB pins 2 & 3 Open pins 1 & 2 closed closed 128KB pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed 256KB pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed 256KB pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed CPU TYPE CONFIGURATION Type JP1 JP2 JP11 JP12 JP14 JP15 JP16 CX486M6 1 & 2 & 2 & 3 1 & 2 2 & 3 Open Open 2 3 CX486M7 1 & 2 & 2 & 3 1 & 2 1 & 2, 3 & 4 Open 2 3 3 & 4 80486SX 2 & 1 & 3 & 4 2 & 3 2 & 3 Open Open 3 2 80486DX 2 & 1 & 3 & 4 2 & 3 1 & 2, 3 & 4 Open 3 2 3 & 4 80486DX2 2 & 1 & 3 & 4 2 & 3 1 & 2, 3 & 4 Open 3 2 3 & 4 80486DX4 2 & 1 & 3 & 4 2 & 3 1 & 2, 3 & 4 Open 3 2 3 & 4 P24D 2 & 1 & 1 & 2, 2 & 3 1 & 2, 3 & 4 Closed 3 2 3 & 4 3 & 4 P24T 2 & 1 & 3 & 4 2 & 3 1 & 2, 2 & 3 Open 3 2 3 & 4 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION (CON’T) Type JP18 JP19 JP20 JP21 JP22 JP23 JP32 CX486M6 2 & 3 2 & 3 Open Open 2 & 3 2 & 3 2 & 3 CX486M7 2 & 3 2 & 3 Open Open 2 & 3 2 & 3 2 & 3 80486SX 2 & 3 4 & 5 Open 1 & 2 Open Open 2 & 3 80486DX 2 & 3 4 & 5 Open 1 & 2 Open Open 2 & 3 80486DX2 2 & 3 4 & 5 Open 1 & 2 Open Open 2 & 3 80486DX4 2 & 3 4 & 5 Open 1 & 2 Open Open 2 & 3 P24D 1 & 2 4 & 5 Closed 2 & 3 1 & 2 Open 2 & 3 P24T 1 & 2 1 & 2 Open Open 1 & 2 1 & 2 2 & 3 Note: Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed JP29 JP30 JP31 JP34 25MHz Closed Open Closed Closed 33MHz Open Closed Closed Closed 40MHz Closed Open Open Closed 50iMHz Closed Open Closed Closed 50MHz Open Closed Open Closed 66iMHz Open Closed Closed Closed 75iMHz Closed Open Closed Open 100iMHz Open Closed Closed Open CPU VOLTAGE CONFIGURATION Voltage JP24 3.3v pins 2 & 3, 5 & 6 closed 5.0v pins 1 & 2, 4 & 5 closed