J-MARK COMPUTER CORPORATION J-656VXC Processor CX M1/AM K5/Pentium Processor Speed 75/90/100/120/133/150/166/200MHz Chip Set Intel Video Chip Set None Maximum Onboard 128MB (EDO supported) Memory Maximum Video Memory None Cache 256/512KB BIOS Award Dimensions 254mm x 218mm I/O Options 32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), USB connectors (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Speaker CN1 IDE interface 1 J4 Reset switch CN2 Serial port 2 J5 Turbo LED CN3 IDE interface 2 J6 IDE interface LED CN4 Serial port 1 J7 Power LED & keylock CN5 Floppy drive J8 interface Turbo switch CN6 USB connector J9 Green PC connector CN7 USB connector J10 PS/2 mouse interface J1 External battery JP4 Parallel port J3 32-bit PCI slots PC1 – PC4 USER CONFIGURABLE SETTINGS Function Label Position » Factory configured - do not JP2 Unidentified alter » Factory configured - do not JP9 Unidentified alter Monitor type select color JP13 Closed Monitor type select monochrome JP13 Open Flash BIOS voltage select 12v JP14 Pins 1 & 2 closed Flash BIOS voltage select 5v JP14 Pins 2 & 3 closed DRAM 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 CACHE CONFIGURATION Size Bank 0 TAG 256KB (2) 32K x 32 (1) 32K x 8 512KB (2) 64K x 32 (1) 32K x 8 CPU SPEED SELECTION (CYRIX) CPU Clock Multiplier JP6 JP7 JP8 JP18 JP19 speed speed 120MHz 50MHz 2x Closed Closed Open Closed Open 133MHz 55MHz 2x Open Open Open Closed Open 150MHz 60MHz 2x Open Closed Open Closed Open 166MHz 66MHz 2x Closed Open Open Closed Open CPU SPEED SELECTION (AMD) CPU Clock Multiplier JP6 JP7 JP8 JP18 JP19 speed speed 90MHz 60MHz 1.5x Open Closed Open Open Open 100MHz 66MHz 1.5x Closed Open Open Open Open CPU SPEED SELECTION (INTEL) CPU Clock Multiplier JP6 JP7 JP8 JP18 JP19 speed speed 75MHz 50MHz 1.5x Closed Closed Open Open Open 90MHz 60MHz 1.5x Open Closed Open Open Open 100MHz 66MHz 1.5x Closed Open Open Open Open 120MHz 60MHz 2x Open Closed Open Closed Open 133MHz 66MHz 2x Closed Open Open Closed Open 150MHz 60MHz 2.5x Open Closed Open Closed Closed 166MHz 66MHz 2.5x Closed Open Open Closed Closed 200MHz 66MHz 3x Closed Open Open Open Closed CPU TYPE SELECTION Type JP3 P54C Pins 1 & 2, 3 & 4, 5 & 6 closed P55C Open CPU VOLTAGE SELECTION (SINGLE) Voltage JP15 JP16 JP17 3.3v Closed Open Open 3.45v Open Closed Open 3.52v Open Open Closed CPU VOLTAGE SELECTION (DUAL) Voltage V JP10 JP11 JP12 JP15 JP16 JP17 core 3.3v 2.5v Closed Open Open Closed Open Open 3.3v 2.8v Open Closed Open Closed Open Open 3.3v 3.45v Open Open Closed Closed Open Open 3.45v 2.5v Closed Open Open Open Open Open 3.45v 2.8v Open Closed Open Open Closed Open 3.45v 3.45v Open Open Closed Open Closed Open 3.52v 2.5v Closed Open Open Open Open Closed 3.52v 2.8v Open Closed Open Open Closed Closed 3.52v 3.45v Open Open Closed Open Open Closed MOS CMOS SELECTION Setting JP4 JP5 » CMOS memory normal Pins 2 & 3 closed Open operation CMOS memory clear Pins 3 & 4 closed Closed