DATAEXPERT CORPORATION TX531 Device Type Mainboard Processor CX 6X86/CX 686MX/AM K5/AM K6/Pentium/Pentium MMX Processor Speed 90/100/120/133/150/166/200/233MHz Chip Set Acer Maximum Onboard 256MB (EDO & SDRAM supported) Memory Cache 512KB BIOS AMI Dimensions 250mm x 220mm I/O Options 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), USB connector [Image] CONNECTIONS Purpose Location Purpose Location PS/2 mouse port CN1 CPU fan power J9 Serial port 2 CN2 Turbo LED J10 Parallel port CN3 IDE interface LED J11 Floppy drive interface CN4 Reset switch J12 IDE interface 2 CN5 Speaker J13 IDE interface 1 CN6 Power LED & keylock J14 Serial port 1 CN7 USB connector JP1 Green PC connector J8 32-bit PCI slots PC1 – PC4 USER CONFIGURABLE SETTINGS Function Label Position » Factory configured - do not J3 Unidentified alter » CMOS memory normal operation JP2 Open CMOS memory clear JP2 Closed » Flash BIOS voltage select 5v JP3 Pins 1 & 2 closed Flash BIOS voltage select 12v JP3 Pins 2 & 3 closed » Factory configured - do not JP5 Unidentified alter CPU mode select interleave JP8 Open CPU mode select burst JP8 Closed 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 SIMM CONFIGURATION (CON’T) Size Bank 0 Bank 1 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 0 Bank 1 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. DIMM VOLTAGE CONFIGURATION Voltage JP6 » 3v Pins 5 & 6, 7 & 8 closed 5v Pins 1 & 2, 3 & 4 closed CACHE CONFIGURATION Size Bank 0 TAG 512KB (2) 64K x 32 (1) 32K x 8 CPU SPEED SELECTION (CX 6X86) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 speed speed 133MHz 55MHz 2x On Off Off On On Off 150MHz 60MHz 2x On Off Off On Off Off 166MHz 66MHz 2x On Off Off Off Off Off 200MHz 75MHz 2x On Off Off Off On On CPU SPEED SELECTION (CX 6X86MX) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 speed speed 166MHz 66MHz 2.5x On On Off On Off Off 200MHz 66MHz 2.5x On On Off Off Off Off 233MHz 75MHz 2.5x On On Off Off On On CPU SPEED SELECTION (AM K5) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 speed speed 90MHz 60MHz 1.5x Off Off Off On Off Off 100MHz 66MHz 1.5x Off Off Off Off Off Off 120MHz 60MHz 1.5x Off Off Off On Off Off 133MHz 66MHz 1.5x Off Off Off Off Off Off 166MHz 66MHz 2.5x On On Off Off Off Off CPU SPEED SELECTION (AM K6) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 speed speed 166MHz 66MHz 2.5x On On Off Off Off Off 200MHz 66MHz 3x Off On Off Off Off Off 233MHz 66MHz 3.5x Off Off Off Off Off Off CPU SPEED SELECTION (INTEL) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 speed speed 90MHz 60MHz 1.5x Off Off Off On Off Off 100MHz 66MHz 1.5x Off Off Off Off Off Off 120MHz 60MHz 2x On Off Off On Off Off 133MHz 66MHz 2x On Off Off Off Off Off 150MHz 60MHz 2.5x On On Off On Off Off 166MHz 66MHz 2.5x On On Off Off Off Off 200MHz 66MHz 3x Off On Off Off Off Off CPU SPEED SELECTION (INTEL MMX) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 speed speed 166MHz 66MHz 2.5x On On Off Off Off Off 200MHz 66MHz 3x Off On Off Off Off Off 233MHz 66MHz 3.5x Off Off Off Off Off Off