SOYO TECHNOLOGY CO., LTD. SY-045A2/A5 Processor 80486SX/80486SX2/CX486DX/U5S/80486DX/CX486DX2/AM486DX2/ 80486DX2/AM486DX4/80486DX4/P24D/Pentium Overdrive Processor 25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/100(internal)MHz Speed Chip Set Unidentified Max. 256MB Onboard DRAM Cache 256/512/1024KB BIOS Award Dimensions 330mm x 218mm I/O 32-bit VESA local bus slot, 32-bit PCI slots (4), IDE interfaces (2), Options parallel port, serial ports (2) NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 CN1 Reset switch J19 Serial port 2 CN2 External battery J20 Parallel port CN3 Turbo switch J21 Floppy drive CN4 Turbo LED J22 interface IDE interface CN5 IDE interface LED JP17 (primary) (secondary) IDE interface CN6 IDE interface LED JP18 (secondary) (primary) Power LED & keylock J17 32-bit PCI slots PCI1 - PCI4 Speaker J18 32-bit VESA local SL1 bus slot Note: The locations of J19, J21, and J22 are unidentified. USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not J7 Open alter » Factory configured - do not JP1 N/A alter » Factory configured - do not JP2 N/A alter » Monitor type select color JP3 Closed Monitor type select monochrome JP3 Open » Factory configured - do not JP4 N/A alter » CMOS memory normal operation JP5 pins 1 & 2 closed CMOS memory clear JP5 pins 2 & 3 closed » Factory configured - do not JP6 Closed alter » Factory configured - do not JP7 Open alter » Factory configured - do not JP12 pins 1 & 2 alter closed » Factory configured - do not JP13 N/A alter » CPU signal type select SMOUT JP15 pins 1 & 2 closed CPU signal type select STPCLK JP15 pins 2 & 3 closed » Factory configured - do not JP19 N/A alter » Factory configured - do not JP27 pins 2 & 3 alter closed » Factory configured - do not JP28 pins 2 & 3 alter closed Note: The locations of JP1, JP2, JP3, JP4, JP13, JP19, and JP29 are unidentified. 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 3MB (1) 256K x (1) 256K x (1) 256K x NONE 36 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 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) 512K x (1) 512K x (1) 512K x NONE 36 36 36 8MB (1) 512K x (1) 512K x (1) 512K x (1) 512K x 36 36 36 36 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 8MB (1) 2M x 36 NONE NONE NONE 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 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) 4M x 36 NONE NONE NONE 17MB (1) 256K 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) 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) 2M x 36 (1) 2M x 36 (1) 2M x 36 NONE DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 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) 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) 16M x 36 NONE NONE NONE 64MB (1) 4M x 36 (1) 4M x 36 (1) 8M x 36 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 70MB (1) 16M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 72MB (1) 1M x 36 (1) 1M x 36 (1) 16M x 36 NONE 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 88MB (1) 16M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 96MB (1) 4M x 36 (1) 4M x 36 (1) 16M x 36 NONE 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 112MB (1) 16M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 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 132MB (1) 16M x 36 (1) 16M x 36 (1) 512K x (1) 512K x 36 36 144MB (1) 16M x 36 (1) 16M x 36 (1) 2M x 36 (1) 2M x 36 160MB (1) 16M x 36 (1) 16M x 36 (1) 4M x 36 (1) 4M x 36 160MB (1) 16M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 192MB (1) 16M x 36 (1) 16M x 36 (1) 16M x 36 NONE 192MB (1) 16M x 36 (1) 16M x 36 (1) 8M x 36 (1) 8M x 36 194MB (1) 16M x 36 (1) 16M x 36 (1) 16M x 36 (1) 512K x 36 200MB (1) 16M x 36 (1) 16M x 36 (1) 16M x 36 (1) 2M x 36 208MB (1) 16M x 36 (1) 16M x 36 (1) 16M x 36 (1) 4M x 36 224MB (1) 16M x 36 (1) 16M x 36 (1) 16M x 36 (1) 8M x 36 256MB (1) 16M x 36 (1) 16M x 36 (1) 16M x 36 (1) 16M x 36 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 256KB (4) 64K x 8 NONE (1) 32K x 8 512KB (4) 64K x 8 (4) 32K x 8 (1) 32K x 8 512KB (4) 128K x 8 NONE (1) 32K x 8 1MB (4) 128K x 8 (4) 128K x 8 (1) 64K x 8 CACHE JUMPER CONFIGURATION Size JP25 JP26 JP29 256KB pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 256KB pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed 512KB pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed 512KB pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed 1MB pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed CPU TYPE CONFIGURATION Type JP30 JP31 JP32 JP33 JP34 JP36 80486SX 3 & 4 Open 2 & 3 Open Open Open 80486SX2 3 & 4 Open 2 & 3 Open Open Open CX486DX (5v) 2 & 3 3 & 4 1 & 2, 2 & 3 Open Open 3 & 4 U5S Open 1 & 2, 1 & 2, 3 & 4 Open Open 3 & 4 3 & 4 80486DX 3 & 4 3 & 4 1 & 2, Open Open Open 3 & 4 CX486DX2 2 & 3 3 & 4 1 & 2, 2 & 3 Open Open (3.6v) 3 & 4 CX486DX2 (4v) 2 & 3 3 & 4 1 & 2, 2 & 3 Open Open 3 & 4 CX486DX2 (5v) 2 & 3 3 & 4 1 & 2, 2 & 3 Open Open 3 & 4 AM486DX2 3 & 4 3 & 4 1 & 2, Open 2 & 3 Open (3.45v) 3 & 4 AM486DX2 (5v) 3 & 4 3 & 4 1 & 2, Open 2 & 3 Open 3 & 4 AM486DX2 3 & 4 3 & 4 1 & 2, Open 2 & 3 1 & 2 3 & 4 80486DX2 3 & 4 3 & 4 1 & 2, Open Open Open 3 & 4 AM486DX4 3 & 4 3 & 4 1 & 2, Open 1 & 2 Open (3.45v) 3 & 4 AM486DX4 3 & 4 3 & 4 1 & 2, Open 1 & 2 1 & 2 3 & 4 80486DX4 3 & 4 3 & 4 1 & 2, Open Open Open 3 & 4 P24D 1 & 2, 3 & 4 1 & 2, Open 1 & 2 Open 3 & 4 3 & 4 Pentium 3 & 4 2 & 3 1 & 2, 1 & 2 Open 1 & 2 Overdrive 3 & 4 Note: Pins designated should be in closed position. CPU TYPE CONFIGURATION (CON’T) Type JP37 JP38 JP39 JP40 JP41 80486SX 4 & 5 Open Open 1 & 2, 3 Open & 4 80486SX2 4 & 5 Open Open 1 & 2, 3 Open & 4 CX486DX (5v) 2 & 3 2 & 3 Open 1 & 2, 3 Open & 4 U5S Open Open Open 1 & 2, 3 Open & 4 80486DX 4 & 5 Open Open 1 & 2, 3 Open & 4 CX486DX2 (3.6v) 2 & 3 2 & 3 3 & 4 3 & 4, 5 Open & 6 CX486DX2 (4v) 2 & 3 2 & 3 5 & 6 3 & 4, 5 Open & 6 CX486DX2 (5v) 2 & 3 2 & 3 Open 1 & 2, 3 Open & 4 AM486DX2 4 & 5 Open 1 & 2 1 & 2, 3 Open (3.45v) & 4 AM486DX2 (5v) 4 & 5 Open 1 & 2 1 & 2, 3 Open & 4 AM486DX2 4 & 5 Open 1 & 2 3 & 4, 5 2 & 3 & 6 80486DX2 4 & 5 Open Open 1 & 2, 3 Open & 4 AM486DX4 4 & 5 Open 1 & 2 1 & 2, 3 Open (3.45v) & 4 AM486DX4 4 & 5 Open 1 & 2 3 & 4, 5 2 & 3 & 6 80486DX4 4 & 5 Open 1 & 2 3 & 4, 5 Open & 6 P24D 4 & 5 1 & 2 Open 1 & 2, 3 1 & 2 & 4 Pentium 1 & 2 1 & 2 Open 1 & 2, 3 Open Overdrive & 4 Note: Pins designated should be in closed position. CPU TYPE CONFIGURATION (CON’T) Type JP42 JP43 JP44 JP45 JP46 80486SX 2 & 3 Open 1 & 2 1 & 2 1 & 2 80486SX2 2 & 3 Open 1 & 2 1 & 2 1 & 2 CX486DX (5v) 2 & 3 Open Open 1 & 2 1 & 2 U5S 2 & 3 Open 1 & 2 2 & 3 4 & 5 80486DX 2 & 3 Open 1 & 2 1 & 2 2 & 3 CX486DX2 (3.6v) 2 & 3 Open Open 1 & 2 1 & 2 CX486DX2 (4v) 2 & 3 Open Open 1 & 2 1 & 2 CX486DX2 (5v) 2 & 3 Open Open 1 & 2 1 & 2 AM486DX2 2 & 3 Open 1 & 2 1 & 2 2 & 3 (3.45v) AM486DX2 (5v) 2 & 3 Open 1 & 2 1 & 2 2 & 3 AM486DX2 2 & 3 Open 4 & 5 1 & 2 2 & 3 80486DX2 2 & 3 Open 1 & 2 1 & 2 2 & 3 AM486DX4 2 & 3 Open 1 & 2 1 & 2 2 & 3 (3.45v) AM486DX4 2 & 3 Open 4 & 5 1 & 2 2 & 3 80486DX4 2 & 3 Open 1 & 2 1 & 2 2 & 3 P24D 1 & 2 Open 2 & 3 1 & 2 2 & 3 Pentium 1 & 2 Open Open 1 & 2 2 & 3 Overdrive Note: Pins designated should be in closed position. CPU SPEED CONFIGURATION Speed JP14 JP21 JP22 25MHz pins 1 & 2 Open Open closed 33MHz pins 1 & 2 Closed Closed closed 40MHz pins 1 & 2 Closed Open closed 50iMHz pins 1 & 2 Open Open closed 66iMHz pins 1 & 2 Closed Closed closed 75iMHz pins 1 & 2 Open Open closed 80iMHz pins 1 & 2 Closed Open closed 100iMHz pins 1 & 2 Closed Closed closed DRQ/DACK CONFIGURATION DRQ/DACK JP8 JP9 JP10 JP11 None Open Open Open Open DRQ3/DACK3 Closed Open Open Closed DRQ7/DACK7 Open Closed Closed Open