CHAINTECH COMPUTER COMPANY, LTD 486SPM Processor 80486SX/CX486DX/AM486DX/U5S/80486DX/ODP486SX/CX486DX2/ CX486DX2V/AM486DX2/AM486DX2/80486DX2/CX486DX4/AM486DX4-NV8T/ AM486DX4-SV8B/80486DX4/80486DX4(WB)/Pentium Overdrive/ SL Pentium Overdrive/CXM1SC Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/100(internal)/ Speed 120(internal)MHz Chip Set Unidentified Max. 128MB Onboard DRAM Cache 128/256/512/1024KB BIOS Award Dimensions 220mm x 250mm I/O Green PC connector, floppy drive interface, IDE interfaces (2), parallel port, Options serial ports (2), 32-bit PCI slots (3) NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 CN2 Green PC LED JP27 Serial port 2 CN3 Green PC connector JP29 Parallel port CN4 Turbo switch JP35 Floppy drive CN5 Turbo LED JP36 interface IDE interface 1 CN6 Speaker JP37 IDE interface 2 CN7 Reset switch JP44 External battery JP12 Power LED & keylock JP45 IDE interface LED 1 JP14 32-bit PCI slots PCI1 - PCI3 IDE interface LED 2 JP15 USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation JP13 pins 1 & 2 closed CMOS memory clear JP13 pins 2 & 3 closed » PCI-Bus clock select normal JP21 pins 1 & 2 speed closed PCI-Bus clock select ½ speed JP21 pins 2 & 3 closed » Factory configured - do not JP31 pins 1 & 2 alter closed » Turbo switch select high speed JP35 Closed Turbo switch select low speed JP35 Open » Factory configured - do not JP39 pins 1 & 2 alter closed » Factory configured - do not JP40 pins 1 & 2 alter closed » Factory configured - do not JP46 N/A alter » Factory configured - do not JP47 N/A alter 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 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 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 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) 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 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 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 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 128KB (4) 32K x 8 NONE (1) 8K x 8 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) 64K 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 JP17 JP18 JP19 JP20 JP25 JP26 128KB 1 & 2 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 256KB 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2 256KB 1 & 2 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 512KB 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 512KB 1 & 2 1 & 2 2 & 3 1 & 2 2 & 3 2 & 3 1MB 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type J2 J3 J4 J5 J6 80486SX Closed Open Open Open Closed CX486DX Open Closed Open Closed Open AM486DX Open Closed Open Open Closed U5S Closed Open Open Open Closed 80486DX Open Closed Open Open Closed ODP486SX Open Closed Open Open Closed CX486DX2V Open Closed Open Closed Open CX486DX2 Open Closed Open Closed Open AM486DX2 Open Closed Open Open Closed AM486DX2-80 Open Closed Open Open Closed 80486DX2 Open Closed Open Open Closed CX486DX4 Open Closed Open Closed Open AM486DX4-NV8T Open Closed Open Open Closed AM486DX4-SV8B Open Open Closed Open Open 80486DX4 Open Closed Open Open Closed 80486DX4 (WB) Open Open Closed Open Open Pentium Open Open Closed Open Open Overdrive SL Pentium Open Open Closed Open Open Overdrive CXM1SC Open Open Closed Open Open CPU TYPE CONFIGURATION (CON’T) Type J7 JP41 JP42 JP43 80486SX Open Open 1 & 2 1 & 2 CX486DX Open 1 & 2 1 & 2 1 & 2 AM486DX Open Open 1 & 2 1 & 2 U5S Open Open 1 & 2 1 & 2 80486DX Open Open 1 & 2 1 & 2 ODP486SX Open Open 1 & 2 2 & 3 CX486DX2V Open 1 &2 1 & 2 1 & 2 CX486DX2 Open Open 1 & 2 1 & 2 AM486DX2 Open Open 1 & 2 1 & 2 AM486DX2-80 Open Open 2 & 3 1 & 2 80486DX2 Open Open 1 & 2 1 & 2 CX486DX4 Open 1 & 2 1 & 2 1 & 2 AM486DX4-NV8T Open Open 1 & 2 1 & 2 AM486DX4-SV8B Closed Open 1 & 2 1 & 2 80486DX4 Open Open 1 & 2 1 & 2 80486DX4 (WB) Closed Open 1 & 2 1 & 2 Pentium Overdrive Closed Open 1 & 2 1 & 2 SL Pentium Closed Open 1 & 2 2 & 3 Overdrive CXM1SC Closed Open 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed JP22 JP23 25MHz pins 2 & 3 closed pins 2 & 3 closed 33MHz pins 1 & 2 closed pins 1 & 2 closed 40MHz pins 1 & 2 closed pins 2 & 3 closed 50iMHz pins 2 & 3 closed pins 2 & 3 closed 50MHz pins 2 & 3 closed pins 1 & 2 closed 66iMHz pins 1 & 2 closed pins 1 & 2 closed 75iMHz pins 2 & 3 closed pins 2 & 3 closed 80iMHz pins 1 & 2 closed pins 2 & 3 closed 100iMHz pins 1 & 2 closed pins 1 & 2 closed 120iMHz pins 1 & 2 closed pins 2 & 3 closed CPU VOLTAGE CONFIGURATION Voltage JP32 JP38 3.3v Open pins 1 & 2 closed 4v Open pins 2 & 3 closed 5v Closed Open DMA CONFIGURATION DMA JP1 JP2 DMA 1 pins 1 & 2 closed pins 1 & 2 closed DMA 3 pins 2 & 3 closed pins 2 & 3 closed