ADVANCED INTEGRATION RESEARCH, INC. 55TX-I Processor CX M1/CX M2/AM K5/AM K6/Pentium Processor Speed 90/100/120/133/150/166/180/200/233/266/300/333/ 366MHz Chip Set Intel Video Chip Set None Maximum Onboard 256MB (EDO supported) Memory Maximum Video None Memory Cache 256/512KB BIOS Award Dimensions 304mm x 215mm 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), IR connector, USB connector, ATX power connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location ATX power connector ATX IR connector J1B Serial port 2 CN1 Soft off power supply J1C Parallel port CN2 Green PC connector J1D PS/2 mouse port CN3 Speaker J2A Serial port 1 CN4 Reset switch J2B Floppy drive interface CN5 Power LED & keylock J2C IDE interface 2 CN6 Turbo LED J2D IDE interface 1 CN7 32-bit PCI slots PC1 – PC4 IDE interface LED J1A USB connector USB USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation JP11 Pins 2 & 3 closed CMOS memory clear JP11 Pins 1 & 2 closed Flash BIOS programming disabled JP19 Pins 1 & 2 closed Flash BIOS programming enabled JP19 Pins 2 & 3 closed » Factory configured - do not SW1/6 Unidentified alter DIMM/DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 4MB (2) 512K x None None None 36 8MB (2) 1M x 36 None None None 8MB None None (1) 1M x 64 None 16MB (2) 2M x 36 None None None 16MB None None (1) 2M x 64 None 16MB (2) 1M x 36 (2) 1M x 36 None None 16MB (2) 1M x 36 None (1) 1M x 64 None 16MB None None (1) 1M x 64 (1) 1M x 64 24MB None (2) 2M x 36 (1) 1M x 64 None 32MB (2) 4M x 36 None None None 32MB None None (1) 4M x 64 None 32MB (2) 2M x 36 None (1) 2M x 64 None 40MB (2) 4M x 36 (2) 1M x 36 None None 40MB (2) 4M x 36 None (1) 1M x 64 None 48MB (2) 2M x 36 None (1) 4M x 64 None 48MB (2) 4M x 36 (2) 2M x 36 None None 48MB (2) 4M x 36 None (1) 2M x 64 None 64MB (2) 8M x 36 None None None 64MB None None None (1) 8M x 64 64MB (2) 4M x 36 (2) 4M x 36 None None DIMM/DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 64MB (2) 4M x 36 None (1) 4M x 64 None 64MB None None (1) 4M x 64 (1) 4M x 64 72MB (2) 8M x 36 (2) 1M x 36 None None 72MB (2) 8M x 36 None (1) 1M x 64 None 80MB None (2) 2M x 36 (1) 8M x 64 None 80MB (2) 8M x 36 (2) 2M x 36 None None 96MB (2) 4M x 36 None (1) 8M x 64 None 96MB (2) 8M x 36 (2) 4M x 36 None None 96MB None (2) 8M x 36 (1) 4M x 64 None 128MB (2) 8M x 36 None (1) 8M x 64 None 128MB None None (1) 8M x 64 (1) 8M x 64 128MB (2) 8M x 36 (2) 8M x 36 None None 128MB (2) 16M x 36 None None None 136MB (2) 16M x 36 (2) 1M x 36 None None 136MB (2) 16M x 36 None (1) 1M x 64 None 144MB (2) 16M x 36 None (1) 2M x 64 None 144MB (2) 16M x 36 (2) 2M x 36 None None 160MB (2) 16M x 36 (2) 4M x 36 None None 160MB (2) 16M x 36 None (1) 4M x 64 None 192MB (2) 16M x 36 None (1) 8M x 64 None 192MB (2) 16M x 36 (2) 8M x 36 None None 256MB (2) 16M x 36 (2) 16M x 36 None None Note: Board accepts EDO memory. CACHE CONFIGURATION Size Bank 0 256KB (2) 32K x 32 512KB (2) 64K x 32 CPU SPEED SELECTION (CYRIX M1) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 speed speed 133MHz 55MHz 2x Off On Off Off On 150MHz 60MHz 2x Off On Off On On 166MHz 66MHz 2x Off On On On On 200MHz 75MHz 2x Off On On Off On CPU SPEED SELECTION (CYRIX M1) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 speed speed 133MHz 55MHz 2x Off On Off Off On 150MHz 60MHz 2x Off On Off On On 166MHz 66MHz 2x Off On On On On 200MHz 75MHz 2x Off On On Off On CPU SPEED SELECTION (CYRIX M2) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 speed speed 166MHz 66MHz 2.5x Off Off On On On 200MHz 66MHz 3x On Off On On On 233MHz 66MHz 3.5x On On On On On CPU SPEED SELECTION (AMD K5) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 speed speed 90MHz 60MHz 1.5x On On Off On On 100MHz 66MHz 1.5x On On On On On 120MHz 60MHz 2x Off On Off On On 133MHz 66MHz 2x Off On On On On 150MHz 60MHz 2.5x Off Off Off On On 166MHz 66MHz 2.5x Off Off On On On CPU SPEED SELECTION (AMD K6) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 speed speed 166MHz 66MHz 2.5x Off Off On On On 200MHz 66MHz 3x On Off On On On 233MHz 66MHz 3.5x On On On On On 266MHz 66MHz 4x Off On On On Off 300MHz 66MHz 4.5x Off Off On On Off 333MHz 66MHz 5x On Off On On Off 366MHz 66MHz 5.5x On On On On Off CPU SPEED SELECTION (INTEL) CPU Clock Multiplier SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 speed speed 90MHz 60MHz 1.5x On On Off On On 100MHz 66MHz 1.5x On On On On On 120MHz 60MHz 2x Off On Off On On 133MHz 66MHz 2x Off On On On On 150MHz 60MHz 2.5x Off Off Off On On 166MHz 66MHz 2.5x Off Off On On On 180MHz 60MHz 3x On Off Off On On 200MHz 66MHz 3x On Off On On On 233MHz 66MHz 3.5x On On On On On CPU VOLTAGE SELECTION Voltage JP3 2.8v Open 2.9v Pins 1 & 2 closed 3.0v Pins 3 & 4 closed 3.1v Pins 1 & 2, 3 & 4, closed 3.2v Pins 5 & 6 closed 3.3v Pins 1 & 2, 5 & 6 closed 3.4v Pins 3 & 4, 5 & 6 closed 3.5v Pins 1 & 2, 3 & 4, 5 & 6 closed