EFA CORPORATION P5TX-ATX Device Type Mainboard Processor CX 6X86/CX 6X86L/CX 686MX/AM K5/AM K6/Pentium/Pentium MMX Processor Speed 90/100/120/133/150/166/200/233MHz Chip Set Intel Video Chip Set None Maximum Onboard 256MB (EDO & SDRAM supported) Memory Maximum Video Memory None Cache 256/512KB BIOS Award Dimensions 305mm x 220mm I/O Options 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), IR connector, USB connector, ATX power connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location ATX power ATX Power LED & J15/pins connector keylock 2/4/6/8/10 Serial port 2 CN1 Turbo LED J15/pins 11 & 12 Parallel port CN2 Green PC J15/pins 13 & connector 14 PS/2 mouse CN3 IDE interface J15/pins 15 & port LED 16 Serial port 1 CN4 Reset switch J15/pins 17 & 18 IDE interface CN5 Green PC LED J15/pins 19 & 2 20 IDE interface CN6 IR connector J19 1 Floppy drive CN7 External J20 interface battery Soft off power J5 32-bit PCI PC1 – PC4 supply slots Speaker J15/pins1/3/5/7 USB connector USB Note: The location of J9 & J15 is unidentified. USER CONFIGURABLE SETTINGS Function Label Position » Factory configured - do not JP3 Unidentified alter » Factory configured - do not JP8 Unidentified alter » CMOS memory normal operation JP9 Pins 1 & 2 closed CMOS memory clear JP9 Pins 2 & 3 closed » Factory configured - do not JP11 Unidentified alter SIMM CONFIGURATION Size Bank 0 Bank 1 8MB (2) 1M x 36 None 16MB (2) 2M x 36 None 16MB (2) 1M x 36 (2) 1M x 36 24MB (2) 2M x 36 (2) 1M x 36 32MB (2) 4M x 36 None 32MB (2) 2M x 36 (2) 2M x 36 40MB (2) 4M x 36 (2) 1M x 36 48MB (2) 4M x 36 (2) 2M x 36 64MB (2) 8M x 36 None 64MB (2) 4M x 36 (2) 4M x 36 72MB (2) 8M x 36 (2) 1M x 36 80MB (2) 8M x 36 (2) 2M x 36 96MB (2) 8M x 36 (2) 4M x 36 128MB (2) 8M x 36 (2) 8M x 36 128MB (2) 16M x 36 None 136MB (2) 16M x 36 (2) 1M x 36 144MB (2) 16M x 36 (2) 2M x 36 160MB (2) 16M x 36 (2) 4M x 36 192MB (2) 16M x 36 (2) 8M x 36 256MB (2) 16M x 36 (2) 16M x 36 Note: Board accepts EDO memory. DIMM CONFIGURATION Size Bank 2 Bank 3 8MB (1) 1M x 64 None 16MB (1) 2M x 64 None 16MB (1) 1M x 64 (1) 1M x 64 24MB (1) 2M x 64 (1) 1M x 64 32MB (1) 4M x 64 None 32MB (1) 2M x 64 (1) 2M x 64 40MB (1) 4M x 64 (1) 1M x 64 48MB (1) 4M x 64 (1) 2M x 64 64MB (1) 8M x 64 None 64MB (1) 4M x 64 (1) 4M x 64 72MB (1) 8M x 64 (1) 1M x 64 80MB (1) 8M x 64 (1) 2M x 64 96MB (1) 8M x 64 (1) 4M x 64 128MB (1) 16M x 64 None 128MB (1) 8M x 64 (1) 8M x 64 136MB (1) 16M x 64 (1) 1M x 64 144MB (1) 16M x 64 (1) 2M x 64 160MB (1) 16M x 64 (1) 4M x 64 192MB (1) 16M x 64 (1) 8M x 64 256MB (1) 16M x 64 (1) 16M x 64 Note: Board accepts SDRAM memory. CACHE CONFIGURATION Size Bank 0 256KB (2) 32K x 32 512KB (2) 64K x 32 CPU SPEED SELECTION (CX 6X86) CPU Clock Multiplier JP4 JP5 JP6 JP7 speed speed 133MHz 55MHz 2x 2 & 3 1 & 2 Closed Closed 150MHz 60MHz 2x 2 & 3 1 & 2 Closed Open 166MHz 66MHz 2x 2 & 3 1 & 2 Open Open Note: Pins designated should be in the closed position. CPU SPEED SELECTION (CX 6X86L) CPU Clock Multiplier JP4 JP5 JP6 JP7 speed speed 166MHz 66MHz 2x 2 & 3 1 & 2 Open Open Note: Pins designated should be in the closed position. CPU SPEED SELECTION (CX 6X86MX) CPU Clock Multiplier JP4 JP5 JP6 JP7 speed speed 166MHz 60MHz 2.5x 2 & 3 2 & 3 Closed Open 166MHz 66MHz 2x 2 & 3 1 & 2 Open Open 200MHz 66MHz 2.5x 2 & 3 2 & 3 Open Open Note: Pins designated should be in the closed position. CPU SPEED SELECTION (AM K5) CPU Clock Multiplier JP4 JP5 JP6 JP7 speed speed 90MHz 60MHz 1.5x 1 & 2 1 & 2 Closed Open 100MHz 66MHz 1.5x 1 & 2 1 & 2 Open Open 120MHz 60MHz 1.5x 1 & 2 1 & 2 Closed Open 133MHz 66MHz 1.5x 1 & 2 1 & 2 Open Open 150MHz 60MHz 2.5x 2 & 3 2 & 3 Closed Open 166MHz 66MHz 2.5x 2 & 3 2 & 3 Open Open Note: Pins designated should be in the closed position. CPU SPEED SELECTION (AM K6) CPU Clock Multiplier JP4 JP5 JP6 JP7 speed speed 166MHz 66MHz 2.5x 2 & 3 2 & 3 Open Open 200MHz 66MHz 3x 1 & 2 2 & 3 Open Open 233MHz 66MHz 3.5x 1 & 2 1 & 2 Open Open Note: Pins designated should be in the closed position. CPU SPEED SELECTION (INTEL) CPU Clock Multiplier JP4 JP5 JP6 JP7 speed speed 90MHz 60MHz 1.5x 1 & 2 1 & 2 Closed Open 100MHz 66MHz 1.5x 1 & 2 1 & 2 Open Open 120MHz 60MHz 2x 2 & 3 1 & 2 Closed Open 133MHz 66MHz 2x 2 & 3 1 & 2 Open Open 150MHz 60MHz 2.5x 2 & 3 2 & 3 Closed Open 166MHz 66MHz 2.5x 2 & 3 2 & 3 Open Open 200MHz 66MHz 3x 1 & 2 2 & 3 Open Open Note: Pins designated should be in the closed position. CPU SPEED SELECTION (INTEL MMX) CPU Clock Multiplier JP4 JP5 JP6 JP7 speed speed 166MHz 66MHz 2.5x 2 & 3 2 & 3 Open Open 200MHz 66MHz 3x 1 & 2 2 & 3 Open Open 233MHz 66MHz 3.5x 1 & 2 1 & 2 Open Open Note: Pins designated should be in the closed position. CPU VOLTAGE SELECTION Voltage JP1 JP12 JP13 JP14 JP15 2.0v * 1 & 2 1 & 2 1 & 2 1 & 2 2.5v * 2 & 3 1 & 2 2 & 3 1 & 2 2.8v 3 & 5, 4 1 & 2 1 & 2 1 & 2 2 & 3 & 6 2.9v 3 & 5, 4 2 & 3 1 & 2 1 & 2 2 & 3 & 6 3.2v 3 & 5, 4 1 & 2 1 & 2 2 & 3 2 & 3 & 6 3.3v 1 & 3, 2 2 & 3 1 & 2 2 & 3 2 & 3 & 4 3.4v * 1 & 2 2 & 3 2 & 3 2 & 3 3.52v 1 & 3, 2 2 & 3 2 & 3 2 & 3 2 & 3 & 4 Note: Pins designated should be in the closed position. * = Reserved for future CPUs.