J-MARK COMPUTER CORPORATION J-5TXA, J-5TXA/L Device Type Mainboard Processor CX 6X86/IBM 6X86/CX 686MX/AM K5/AM K6/Pentium Processor Speed 90/100/120/133/150/166/200/233/266/300MHz Chip Set Intel Video Chip Set None Maximum Onboard 256MB (EDO & SDRAM supported) Memory Maximum Video None Memory Cache 512KB BIOS Award Dimensions 305mm x 244mm 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 connectors (2), USB connectors (2), ATX power connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location ATX power connector ATX PS/2 mouse port J1 Speaker C1 Parallel port J3 Reset switch C2 Serial port 1 J4 Turbo LED C3 USB connector 1 J5 IDE interface LED C4 USB connector 2 J5A Power LED & keylock C5 Serial port 2 J6 Turbo switch C6 Floppy drive J14 interface Green PC connector C7 IDE interface 2 J15 Consumer IR connector CIR1 IDE interface 1 J17 CPU fan power CPU Soft off power supply JP7 IR connector IR1 32-bit PCI slots PC1 – PC4 USER CONFIGURABLE SETTINGS Function Label Position Flash BIOS voltage select 12v JERP Pins 1 & 2 closed Flash BIOS voltage select 5v JERP Pins 2 & 3 closed CMOS memory JP6 Unidentified 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 SIMM CONFIGURATION (CON’T) Size Bank 0 Bank 1 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 TAG 512KB (1) 64K x 64 (1) 32K x 32 CPU SPEED SELECTION (CX 6X86) CPU speed Clock speed Multiplier J16 150MHz 60MHz 2x Pins 21 & 22 closed 166MHz 66MHz 2x Pins 23 & 24 closed 200MHz 75MHz 2x Pins 25 & 26 closed CPU SPEED SELECTION (IBM 6X86) CPU speed Clock speed Multiplier J16 150MHz 60MHz 2x Pins 21 & 22 closed 166MHz 66MHz 2x Pins 23 & 24 closed 200MHz 75MHz 2x Pins 25 & 26 closed CPU SPEED SELECTION (CX 6X86MX) CPU speed Clock speed Multiplier J16 166MHz 60MHz 2.5x Pins 9 & 10 closed 200MHz 75MHz 2x Pins 25 & 26 closed 233MHz 66MHz 3x Pins 13 & 14 closed CPU SPEED SELECTION (AM K5) CPU speed Clock speed Multiplier J16 90MHz 60MHz 1.5x Pins 1 & 2 closed 100MHz 66MHz 1.5x Pins 3 & 4 closed 133MHz 66MHz 1.5x Pins 3 & 4 closed 166MHz 66MHz 2.5x Pins 11 & 12 closed CPU SPEED SELECTION (AM K6) CPU speed Clock speed Multiplier J16 166MHz 66MHz 2.5x Pins 11 & 12 closed 200MHz 66MHz 3x Pins 13 & 14 closed 233MHz 66MHz 3.5x Pins 15 & 16 closed 266MHz 66MHz 4x Pins 17 & 18 closed 300MHz 66MHz 4.5x Pins 19 & 20 closed CPU SPEED SELECTION (INTEL) CPU speed Clock speed Multiplier J16 90MHz 60MHz 1.5x Pins 1 & 2 closed 100MHz 66MHz 1.5x Pins 3 & 4 closed 120MHz 60MHz 2x Pins 5 & 6 closed 133MHz 66MHz 2x Pins 7 & 8 closed 150MHz 60MHz 2.5x Pins 9 & 10 closed 166MHz 66MHz 2.5x Pins 11 & 12 closed 200MHz 66MHz 3x Pins 13 & 14 closed CPU SPEED SELECTION (INTEL MMX) CPU speed Clock speed Multiplier J16 166MHz 66MHz 2.5x Pins 11 & 12 closed 200MHz 66MHz 3x Pins 13 & 14 closed 233MHz 66MHz 3.5x Pins 3 & 4 closed CPU VOLTAGE SELECTION Voltage JP1/pins 1 & JP1/pins 3 & JP1/pins 5 & JP1/pins 7 & 2 4 6 8 2.04v Closed Closed Closed Open 2.10v Closed Closed Closed Closed 2.14v Open Open Open Closed 2.84v Closed Open Open Open 2.94v Closed Open Open Closed 3.24v Closed Closed Open Open 3.34v Closed Closed Closed Open 3.44v Closed Closed Closed Open 3.54v Closed Closed Closed Closed