EFA CORPORATION 486U-PIO Processor CX486SX/UMC486SX/80486SX/SL80486SX/CX486SX2/UMC486SX2/ 80486SX2/SL80486SX2/CX486DX/UMC486DX/AM486DX/(SL)AM486DX/ 80486DX/SL80486DX/CX486DX2/UMC486DX2/AM486DX2/(SL)AM486DX2/ 80486DX2/SL80486DX2/P24D/AM486DX4/(SL)AM486DX4/80486DX4/ Pentium Overdrive/CXM1 Processor 25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/100(internal)/ Speed 120(internal)MHz Chip Set UMC Max. 128MB Onboard DRAM Cache 128/256/512/1024KB BIOS Award Dimensions 280mm x 220mm I/O 32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel Options port, serial ports (2) NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Floppy drive interface J1 Power LED & keylock J8 Parallel port J2 Speaker J9 Serial port 1 J3 External battery J10 Serial port 2 J4 Reset switch J12 IDE interface 2 J5 Turbo switch J13 IDE interface 1 J6 Turbo LED J14 IDE interface LED J7 32-bit PCI slots PC1 - PC3 USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation JP1 Open CMOS memory clear JP1 Closed » Monitor type select color JP2 Closed Monitor type select monochrome JP2 Open » Flash BIOS voltage select 5v JP3 pins 1 & 2 closed Flash BIOS voltage select 12v JP3 pins 2 & 3 closed PS/2 mouse IRQ12 enabled JP4 Closed PS/2 mouse IRQ12 disabled JP4 Open DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x NONE NONE NONE 36 2MB (1) 512K x NONE NONE NONE 36 2MB (1) 256K x (1) 256K x NONE NONE 36 36 3MB (1) 512K x (1) 256K x NONE NONE 36 36 3MB (1) 256K x (1) 256K x (1) 256K x NONE 36 36 36 3MB (1) 256K x (1) 512K x NONE NONE 36 36 4MB (1) 1M x 36 NONE NONE NONE 4MB (1) 512K x (1) 256K x (1) 256K x NONE 36 36 36 4MB (1) 512K x (1) 512K x NONE NONE 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 5MB (1) 1M x 36 (1) 256K x NONE NONE 36 5MB (1) 512K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 5MB (1) 256K x (1) 512K x (1) 512K x NONE 36 36 36 5MB (1) 256K x (1) 1M x 36 NONE NONE 36 6MB (1) 1M x 36 (1) 256K x (1) 256K x NONE 36 36 6MB (1) 1M x 36 (1) 512K x NONE NONE 36 6MB (1) 512K x (1) 512K x (1) 512K x NONE 36 36 36 6MB (1) 512K x (1) 1M x 36 NONE NONE 36 7MB (1) 1M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 7MB (1) 256K x (1) 512K x (1) 512K x (1) 512K x 36 36 36 36 8MB (1) 2M x 36 NONE NONE NONE 8MB (1) 1M x 36 (1) 512K x (1) 512K x NONE 36 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 8MB (1) 512K x (1) 512K x (1) 512K x (1) 512K x 36 36 36 36 9MB (1) 2M x 36 (1) 256K x NONE NONE 36 9MB (1) 256K x (1) 1M x 36 (1) 1M x 36 NONE 36 9MB (1) 256K x (1) 2M x 36 NONE NONE 36 10MB (1) 2M x 36 (1) 256K x (1) 256K x NONE 36 36 10MB (1) 2M x 36 (1) 512K x NONE NONE 36 10MB (1) 1M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 10MB (1) 512K x (1) 1M x 36 (1) 1M x 36 NONE 36 10MB (1) 512K x (1) 2M x 36 NONE NONE 36 11MB (1) 2M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 12MB (1) 2M x 36 (1) 512K x (1) 512K x NONE 36 36 12MB (1) 2M 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 (1) 2M x 36 NONE NONE 13MB (1) 256K x (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 36 14MB (1) 2M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 14MB (1) 512K x (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 36 16MB (1) 4M x 36 NONE NONE NONE 16MB (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 NONE 16MB (1) 2M 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 17MB (1) 4M x 36 (1) 256K x NONE NONE 36 17MB (1) 256K x (1) 2M x 36 (1) 2M x 36 NONE 36 17MB (1) 256K x (1) 4M x 36 NONE NONE 36 18MB (1) 4M x 36 (1) 256K x (1) 256K x NONE 36 36 18MB (1) 4M x 36 (1) 512K x NONE NONE 36 18MB (1) 512K x (1) 2M x 36 (1) 2M x 36 NONE 36 18MB (1) 512K x (1) 4M x 36 NONE NONE 36 19MB (1) 4M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 20MB (1) 4M x 36 (1) 512K x (1) 512K x NONE 36 36 20MB (1) 4M x 36 (1) 1M x 36 NONE NONE 20MB (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 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 22MB (1) 4M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 24MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 NONE 24MB (1) 4M x 36 (1) 2M x 36 NONE NONE 24MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 NONE 24MB (1) 2M x 36 (1) 4M x 36 NONE NONE 25MB (1) 256K x (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 36 26MB (1) 512K x (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 36 28MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 28MB (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 32MB (1) 8M x 36 NONE NONE NONE 32MB (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 NONE 32MB (1) 4M x 36 (1) 4M x 36 NONE NONE 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 33MB (1) 8M x 36 (1) 256K x NONE NONE 36 33MB (1) 256K x (1) 4M x 36 (1) 4M x 36 NONE 36 33MB (1) 256K x (1) 8M x 36 NONE NONE 36 34MB (1) 8M x 36 (1) 256K x (1) 256K x NONE 36 36 34MB (1) 8M x 36 (1) 512K x NONE NONE 36 34MB (1) 512K x (1) 4M x 36 (1) 4M x 36 NONE 36 34MB (1) 512K x (1) 8M x 36 NONE NONE 36 35MB (1) 8M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 36MB (1) 8M x 36 (1) 512K x (1) 512K x NONE 36 36 36MB (1) 8M x 36 (1) 1M x 36 NONE NONE 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 38MB (1) 8M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 40MB (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 NONE 40MB (1) 8M x 36 (1) 2M x 36 NONE NONE 40MB (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 40MB (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 NONE 40MB (1) 2M x 36 (1) 8M x 36 NONE NONE 44MB (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 48MB (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 NONE 48MB (1) 8M x 36 (1) 4M x 36 NONE 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 49MB (1) 256K x (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 36 50MB (1) 512K x (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 36 52MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 56MB (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 56MB (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 8M x 36 (1) 4M x 36 (1) 4M x 36 NONE 64MB (1) 8M 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 65MB (1) 256K x (1) 8M x 36 (1) 8M x 36 NONE 36 66MB (1) 512K x (1) 8M x 36 (1) 8M x 36 NONE 36 68MB (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 NONE 72MB (1) 2M x 36 (1) 8M x 36 (1) 8M x 36 NONE 80MB (1) 8M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 80MB (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 NONE 96MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 NONE DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 97MB (1) 256K x (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 36 98MB (1) 512K x (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 36 100MB (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 104MB (1) 2M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 112MB (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 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) 32K x 8 256KB (A) (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 256KB (B) (4) 64K x 8 NONE (1) 32K x 8 512KB (A) (4) 64K x 8 (4) 64K x 8 (1) 32K x 8 512KB (B) (4) 128K x 8 NONE (1) 32K x 8 1MB (4) 128K x 8 (4) 128K x 8 (1) 64K or (1) 128K x 8 CACHE JUMPER CONFIGURATION Size JP12 JP13 JP14 128KB pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 256KB (A) pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed 256KB (B) pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed 512KB (A) pins 2 & 3 pins 2 & 3 pins 4 & 5 closed closed closed 512KB (B) pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed 1MB pins 2 & 3 pins 2 & 3 pins 5 & 6 closed closed closed CPU TYPE CONFIGURATION Type JP15 JP16 JP17 JP18 JP19 CX486SX 1 & 2 Open 2 & 3 1 & 2 2 & 3, 4 & 5 UMC486SX Open Open 1 & 2 2 & 3 Open 80486SX Open Open 1 & 2 1 & 2 Open SL80486SX Open Open 1 & 2 1 & 2 3 & 4, 5 & 6 CX486SX2 1 & 2 Open 2 & 3 1 & 2 2 & 3, 4 & 5 UMC486SX2 Open Open 1 & 2 2 & 3 Open 80486SX2 Open Open 1 & 2 1 & 2 Open SL80486SX2 Open Open 1 & 2 1 & 2 3 & 4, 5 & 6 CX486DX 1 & 2 1 & 2 2 & 3 1 & 2 2 & 3, 4 & 5 UMC486DX Open 1 & 2 1 & 2 2 & 3 Open AM486DX Open 1 & 2 1 & 2 2 & 3 1 & 2 (SL)AM486DX 2 & 3 1 & 2 1 & 2 1 & 2 3 & 4, 5 & 6 80486DX Open 1 & 2 1 & 2 1 & 2 Open SL80486DX Open 1 & 2 1 & 2 1 & 2 3 & 4, 5 & 6 CX486DX2 1 & 2 1 & 2 2 & 3 1 & 2 2 & 3, 4 & 5 UMC486DX2 Open 1 & 2 1 & 2 2 & 3 Open CPU TYPE CONFIGURATION (CON’T) Type JP15 JP16 JP17 JP18 JP19 AM486DX2 Open 1 & 2 1 & 2 2 & 3 1 & 2 (SL)AM486DX2 2 & 3 1 & 2 1 & 2 1 & 2 3 & 4, 5 & 6 80486DX2 Open 1 & 2 1 & 2 1 & 2 Open SL80486DX2 Open 1 & 2 1 & 2 1 & 2 3 & 4, 5 & 6 P24D 2 & 3 1 & 2 1 & 2 1 & 2 3 & 4, 5 & 6 AM486DX4 Open 1 & 2 1 & 2 2 & 3 Open (SL)AM486DX4 2 & 3 1 & 2 1 & 2 1 & 2 3 & 4, 5 & 6 80486DX4 Open 1 & 2 1 & 2 1 & 2 3 & 4, 5 & 6 P24T 2 & 3 2 & 3 1 & 2 1 & 2 3 & 4, 5 & 6 CXM1 2 & 3 1 & 2, 3 1 & 2 1 & 2 3 & 4, 5 & 4 & 6 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION (CON’T) Type JP22 JP23 JP24 JP25 CX486SX 2 & 3, 4 & 2 & 3 1 & 2 Open 5 UMC486SX Open 2 & 3 2 & 3 Open 80486SX Open 2 & 3 2 & 3 Open SL80486SX 5 & 6 2 & 3 1 & 2 Open CX486SX2 2 & 3, 4 & 2 & 3 1 & 2 Open 5 UMC486SX2 Open 2 & 3 2 & 3 Open 80486SX2 Open 2 & 3 2 & 3 Open SL80486SX2 5 & 6 2 & 3 1 & 2 Open CX486DX 2 & 3, 4 & 1 & 2, 3 & 1 & 2 Open 5 4 UMC486DX Open 1 & 2, 3 & 2 & 3 Open 4 AM486DX Open 1 & 2, 3 & 2 & 3 Open 4 (SL)AM486DX 1 & 2, 3 & 1 & 2, 3 & 1 & 2 Open 4, 5 & 6 4 80486DX Open 1 & 2, 3 & 2 & 3 Open 4 SL80486DX 5 & 6 1 & 2, 3 & 1 & 2 Open 4 CX486DX2 2 & 3, 4 & 1 & 2, 3 & 1 & 2 Open 5 4 UMC486DX2 Open 1 & 2, 3 & 2 & 3 Open 4 AM486DX2 Open 1 & 2, 3 & 2 & 3 Open 4 (SL)AM486DX2 1 & 2, 3 & 1 & 2, 3 & 1 & 2 Open 4, 5 & 6 4 80486DX2 Open 1 & 2, 3 & 2 & 3 Open 4 SL80486DX2 5 & 6 1 & 2, 3 & 1 & 2 Open 4 P24D 3 & 4, 5 & 1 & 2, 3 & 1 & 2 Open 6 4 AM486DX4 Open 1 & 2, 3 & 2 & 3 Open 4 (SL)AM486DX4 3 & 4, 5 & 1 & 2, 3 & 1 & 2 Open 6 4 80486DX4 5 & 6 1 & 2, 3 & 1 & 2 Open 4 P24T 5 & 6 1 & 2, 3 & 1 & 2 Open 4 CXM1 3 & 4, 5 & 1 & 2, 3 & 1 & 2 Open 6 4 Note: Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed JP9 JP10 JP11 25MHz pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed 33MHz pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed 40MHz pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed 50iMHz pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed 66iMHz pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed 75iMHz pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed 80iMHz pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed 100iMHz pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed 120iMHz pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed CPU VOLTAGE CONFIGURATION Voltage JP20 JP21 3.3v pins 2 & 3, 4 & 5 pins 1 & 2 closed closed 3.45v pins 2 & 3, 4 & 5 pins 2 & 3 closed closed 3.8v pins 2 & 3, 4 & 5 pins 4 & 5 closed closed 4v pins 2 & 3, 4 & 5 pins 5 & 6 closed closed 5v pins 1 & 2 , 5 & 6 pins 2 & 3 closed closed DMA CONFIGURATION » DMA JP5 JP6 » DMA 3 pins 2 & 3 closed pins 2 & 3 closed » DMA 5 pins 1 & 2 closed pins 1 & 2 closed