ATC/UNITRON COMPUTER & COMPUTER PARTS U6978 Processor AMD K5/Pentium Processor Speed 75/90/100MHz Chip Set Unidentified Max. Onboard DRAM 128MB Cache 64/256/512/1024KB BIOS Award Dimensions 330mm x 218mm I/O Options 32-bit PCI slots (4), green PC connector, floppy drive interface, IDE interfaces (2), parallel port, serial ports (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 J1 Reset switch J9 Serial port 2 J2 IDE interface LED JP26 Floppy drive interface J3 Green PC connector JP28 Parallel port J4 Turbo LED JP29 IDE interface 1 J5 Turbo switch JP30 IDE interface 2 J6 Green PC connector JP31 Speaker J7 32-bit PCI slots PC1 - PC4 Power LED & keylock J8 USER CONFIGURABLE SETTINGS Function Jumper Position » ECP/EPP signal select DREQ1 JP1 pins 1 & 3 closed ECP/EPP signal select DREQ3 JP1 pins 2 & 4 closed » ECP/EPP signal select DACK1 JP2 pins 1 & 4 closed ECP/EPP signal select DACK3 JP2 pins 2 & 5 closed » Monitor type select color JP3 Closed Monitor type select monochrome JP3 Open » Factory configured - do not alter JP4 N/A » BIOS type select EPROM JP6 Open BIOS type select 5v flash JP6 pins 2 & 3 closed BIOS type select 12v flash JP6 pins 1 & 2 closed » Factory configured - do not alter JP7 N/A » CMOS memory normal operation JP8 Open CMOS memory clear JP8 Closed » Factory configured - do not alter JP11 N/A » L1 invalidate cycle select master JP16 pins 2 & 3 write cycles force invalidation closed L1 invalidate cycle select every JP16 pins 1 & 2 cycle with W/R# force invalidation closed » Pipeline disabled JP17 pins 2 & 3 closed Pipeline enabled JP17 pins 1 & 2 closed » Cache type select write back JP21 pins 1 & 2 closed Cache type select write through JP21 pins 2 & 3 closed » Turbo enabled JP30 pins 1 & 2 closed Turbo disabled JP30 pins 2 & 3 closed DRAM CONFIGURATION 1 Size Bank 0 Bank 1 2MB (2) 256K x 36 NONE 4MB (2) 512K x 36 NONE 8MB (2) 1M x 36 NONE 16MB (2) 2M x 36 NONE 32MB (2) 4M x 36 NONE 64MB (2) 8M x 36 NONE 128MB (2) 16M x 36 NONE DRAM CONFIGURATION 2 Size Bank 0 Bank 1 4MB (2) 256K x 36 (2) 256K x 36 16MB (2) 1M x 36 (2) 1M x 36 64MB (2) 4M x 36 (2) 4M x 36 DRAM CONFIGURATION 3 Size Bank 0 Bank 1 12MB (2) 512K x 36 (2) 1M x 36 36MB (2) 512K x 36 (2) 4M x 36 8MB (2) 512K x 36 (2) 512K x 36 20MB (2) 512K x 36 (2) 2M x 36 48MB (2) 2M x 36 (2) 4M x 36 32MB (2) 2M x 36 (2) 2M x 36 80MB (2) 2M x 36 (2) 8M x 36 128MB (2) 8M x 36 (2) 8M x 36 DRAM JUMPER CONFIGURATION Configuration JP9 1 pins 1 & 2 OR 2 & 3 closed 2 pins 1 & 2 closed 3 pins 2 & 3 closed CACHE CONFIGURATION Size Bank 0 TAG 64KB (8) 8K x 8 (1) 8K x 8 256KB (8) 32K x 8 (1) 8K x 8 512KB (8) 64K x 8 (1) 16K x 8 1MB (8) 128K x 8 (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP13 JP14 JP19 JP20 64KB Open Open Open Open 256KB Open Open Closed Closed 512KB Open Closed Closed Closed 1MB Closed Closed Closed Closed CACHE VOLTAGE CONFIGURATION Voltage JP15 JP18 JP25 Mixed voltage pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 3.3v pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed CPU TYPE CONFIGURATION Type JP23 JP24 JP27 AMD K5 Open Open Open Pentium Closed Closed Closed CPU SPEED CONFIGURATION Speed JP10 JP12 75MHz Open Open 90MHz Open Closed 100MHz Closed Closed CPU SPEED CONFIGURATION (AMD K5) Speed JP22 1x pins 2 & 3 closed 1.5x/2x/3x pins 1 & 2 closed CPU SPEED CONFIGURATION (PENTIUM) Speed JP22 1.5x pins 1 & 2 closed 2x pins 2 & 3 closed PCI IDE CONFIGURATION Base address JP5 » Enabled pins 1 & 2 open » Disabled pins 1 & 2 closed PCI IDE CONFIGURATION 1st IDE channel JP5 » Enabled pins 3 & 4 open » Disabled pins 3 & 4 closed PCI IDE CONFIGURATION 2nd IDE channel JP5 » Enabled pins 5 & 6 closed » Disabled pins 5 & 6 open PCI IDE CONFIGURATION External D/FF JP5 » Needed pins 9 & 10 open » Not needed pins 9 & 10 closed