BCM ADVANCED RESEARCH, INC. SQ578 Processor CX 6X86/CX 6X86L/CX 686MX/IDT-C6/AM K5/Pentium Processor Speed 75/90/100/120/133/150/166/200/233/266/300MHz Chip Set SIS Video Chip Set Unidentified Maximum Onboard 256MB Memory Maximum Video Unidentified Memory Cache 256/512KB BIOS Unidentified Dimensions 270mm x 220mm I/O Options 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), VGA feature connector, VGA interface, IR connector, USB connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location PS/2 mouse J1 External battery J29 interface Serial port 1 J5 Chassis fan power J30 USB connector J6 Power LED & J31/pins 1 - 5 keylock Serial port 2 J9 Speaker J31/pins 7 - 10 Floppy drive J21 IDE interface LED J31/pins 12 & interface 24 Parallel port J22 Reset switch J31/pins 21 & 22 VGA feature J25 Green PC J32 connector connector IDE interface 2 J26 Green PC LED J33 VGA interface J27 IR connector J34 IDE interface 1 J28 32-bit PCI slots PC1 – PC4 USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation JP1 Pins 1 & 2 closed CMOS memory clear JP1 Pins 2 & 3 closed Cyrix linear bust mode select JP18 Open interleave burst Cyrix linear bust mode select JP18 Closed linear burst 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 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 DIMM VOLTAGE CONFIGURATION Voltage JP2 3.3v Pins 2 & 3 closed 5v Pins 1 & 2 closed CACHE CONFIGURATION Size Bank 0 256KB (2) 32K x 32 512KB (2) 64K x 32 CPU SPEED SELECTION (CX 6X86/6X86L) CPU Clock Multiplier JP4 JP5 JP6 JP7 JP8 JP9 speed speed 120MHz 50MHz 2x Closed Closed Open Closed Open Open 133MHz 55MHz 2x Open Open Open Closed Open Open 150MHz 60MHz 2x Open Closed Open Closed Open Open 166MHz 66MHz 2x Closed Open Open Closed Open Open 200MHz 75MHz 2x Closed Closed Closed Closed Open Open CPU SPEED SELECTION (CX 6X86MX) CPU Clock Multiplier JP4 JP5 JP6 JP7 JP8 JP9 speed speed 133MHz 50MHz 2x Closed Closed Open Closed Open Open 133MHz 55MHz 2x Open Open Open Closed Open Open 150MHz 60MHz 2x Open Closed Open Closed Open Open 150MHz 50MHz 2.5x Closed Closed Open Closed Closed Open 166MHz 66MHz 2x Closed Open Open Closed Open Open 166MHz 75MHz 2.5x Open Open Open Closed Closed Open 166MHz 50MHz 3x Closed Closed Open Open Closed Open 166MHz 60MHz 2.5x Open Closed Open Closed Closed Open 200MHz 75MHz 2x Closed Closed Closed Closed Open Open 200MHz 75MHz 3x Open Open Open Open Closed Open 200MHz 55MHz 2.5x Closed Open Open Closed Closed Open 200MHz 60MHz 3x Open Closed Open Open Closed Open 233MHz 75MHz 2.5x Closed Closed Closed Closed Closed Open 233MHz 66MHz 3x Closed Open Open Open Closed Open 266MHz 66MHz 3.5x Closed Open Open Open Open Open 266MHz 75MHz 3x Closed Closed Closed Open Closed Open CPU SPEED SELECTION (AMD) CPU Clock Multiplier JP4 JP5 JP6 JP7 JP8 JP9 speed speed 75MHz 50MHz 1.5x Closed Closed Open Open Open Open 90MHz 60MHz 1.5x Open Closed Open Open Open Open 100MHz 66MHz 1.5x Closed Open Open Open Open Open 120MHz 60MHz 2x Open Closed Open Closed Open Open 133MHz 66MHz 2x Closed Open Open Closed Open Open 150MHz 60MHz 2.5x Open Closed Open Closed Closed Open 166MHz 66MHz 2.5x Closed Open Open Closed Closed Open 200MHz 66MHz 3x Closed Open Open Open Closed Open 233MHz 66MHz 3.5x Closed Open Open Open Open Open 266MHz 66MHz 4x Closed Open Open Closed Open Closed 300MHz 66MHz 4.5x Closed Open Open Closed Closed Closed CPU SPEED SELECTION (IDT-C6) CPU Clock Multiplier JP4 JP5 JP6 JP7 JP8 JP9 speed speed 150MHz 50MHz 3x Closed Closed Open Open Closed Open 150MHz 75MHz 2x Closed Closed Closed Closed Open Open 180MHz 60MHz 3x Open Closed Open Open Closed Open 200MHz 66MHz 3x Closed Open Open Open Closed Open CPU SPEED SELECTION (INTEL) CPU Clock Multiplier JP4 JP5 JP6 JP7 JP8 JP9 speed speed 75MHz 50MHz 1.5x Closed Closed Open Open Open Open 90MHz 60MHz 1.5x Open Closed Open Open Open Open 100MHz 66MHz 1.5x Closed Open Open Open Open Open 120MHz 60MHz 2x Open Closed Open Closed Open Open 133MHz 66MHz 2x Closed Open Open Closed Open Open 150MHz 60MHz 2.5x Open Closed Open Closed Closed Open 166MHz 66MHz 2.5x Closed Open Open Closed Closed Open 200MHz 66MHz 3x Closed Open Open Open Closed Open 233MHz 66MHz 3.5x Closed Open Open Open Open Open 266MHz 66MHz 4x Closed Open Open Closed Open Closed 300MHz 66MHz 4.5x Closed Open Open Closed Closed Closed CPU VOLTAGE SELECTION (SINGLE) Voltage JP10 JP11 JP12 JP13 JP14 JP15 JP16 3.38v Open Open Open Closed Open 1 & 2 1 & 2 3.52v Open Open Open Open Closed 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CPU VOLTAGE SELECTION (DUAL) Voltage V JP10 JP11 JP12 JP13 JP14 JP15 JP16 core 3.3v 2.1 Open Open Open Open Open 2 & 2 & 3 3 3.3v 2.8 Closed Open Open Open Open 2 & 2 & 3 3 3.3v 2.9 Open Closed Open Open Open 2 & 2 & 3 3 3.3v 3.2 Open Open Closed Open Open 2 & 2 & 3 3 Note: Pins designated should be in the closed position. ON BOARD VGA SELECTION Setting JP3 JP17 Enabled Pins 2 & 3 closed Open Disabled Pins 1 & 2 closed Closed Note: these jumpers are optional and may not be present.