PC CHIPS MANUFACTURING, LTD. M558 Device Type Mainboard Processor CX 6X86/CX 6X86L/CX 6X86MX/IBM 6X86/IBM 6X86L/IBM 6X86MX/AM K5/AM K6/IDT C6/Pentium/Pentium MMX Processor Speed 75/90/100/120/133/150/166/180/200/233MHz Chip Set Intel VX Pro II Video Chip Set None Maximum Onboard 128MB (EDO supported) Memory Maximum Video None Memory Cache 256/512KB BIOS Unidentified Dimensions 254mm x 218mm I/O Options 32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), parallel port, serial ports (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 CN1 IDE interface LED CN7/pins 2 & 10 Serial port 2 CN2 Speaker CN7/pins 5 - 8 Parallel port CN3 Power LED & CN7/pins 12 - keylock 16 Floppy drive CN4 Chassis fan power FAN interface IDE interface 1 CN5 IR connector IR2 IDE interface 2 CN6 32-bit PCI slots PC1 – PC4 Reset switch CN7/pins 1 & USB connector USB1 9 USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation J1 Pins 1 & 2 closed CMOS memory clear J1 Pins 2 & 3 closed » Factory configured - do not JP4 Unidentified alter Internal power good selector JP7 Pins 1 & 2 closed External power good selector JP7 Pins 2 & 3 closed 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 Note: Board accepts EDO memory. CACHE CONFIGURATION Size Bank 0 Bank 1 SL1 256KB (2) 32K x 32 None Not installed 512KB (2) 32K x 32 (2) 32K x 32 Not installed Note: The location of banks 0 & 1 are unidentified. CACHE JUMPER CONFIGURATION Size JP9 256KB Pins 1 & 2 closed 512KB Pins 2 & 3 closed CPU SPEED SELECTION (CX 6X86) CPU Clock Multiplier JP1 JP2 JP3 JP5 JP6 speed speed 120MHz 50MHz 2x 2 & 3 2 & 3 1 & 2 1 & 2 2 & 3 150MHz 60MHz 2x 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 166MHz 66MHz 2x 1 & 2 2 & 3 1 & 2 1 & 2 2 & 3 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (IBM 6X86) CPU Clock Multiplier JP1 JP2 JP3 JP5 JP6 speed speed 120MHz 50MHz 2x 2 & 3 2 & 3 1 & 2 1 & 2 2 & 3 150MHz 60MHz 2x 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 166MHz 66MHz 2x 1 & 2 2 & 3 1 & 2 1 & 2 2 & 3 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (CX 6X86L) CPU Clock Multiplier JP1 JP2 JP3 JP5 JP6 speed speed 150MHz 60MHz 2x 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 166MHz 66MHz 2x 1 & 2 2 & 3 1 & 2 1 & 2 2 & 3 200MHz 75MHz 2x 1 & 2 2 & 3 2 & 3 1 & 2 2 & 3 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (IBM 6X86L) CPU Clock Multiplier JP1 JP2 JP3 JP5 JP6 speed speed 150MHz 60MHz 2x 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 166MHz 66MHz 2x 1 & 2 2 & 3 1 & 2 1 & 2 2 & 3 200MHz 75MHz 2x 1 & 2 2 & 3 2 & 3 1 & 2 2 & 3 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (CX 6X86MX) CPU Clock Multiplier JP1 JP2 JP3 JP5 JP6 speed speed 166MHz 60MHz 2.5x 2 & 3 1 & 2 1 & 2 2 & 3 2 & 3 200MHz 66MHz 2.5x 1 & 2 2 & 3 1 & 2 2 & 3 2 & 3 233MHz 75MHz 2.5x 1 & 2 2 & 3 2 & 3 2 & 3 2 & 3 233MHz 66MHz 3x 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (IBM 6X86MX) CPU Clock Multiplier JP1 JP2 JP3 JP5 JP6 speed speed 166MHz 60MHz 2.5x 2 & 3 1 & 2 1 & 2 2 & 3 2 & 3 200MHz 66MHz 2.5x 1 & 2 2 & 3 1 & 2 2 & 3 2 & 3 233MHz 75MHz 2.5x 1 & 2 2 & 3 2 & 3 2 & 3 2 & 3 233MHz 66MHz 3x 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (AM K5) CPU Clock Multiplier JP1 JP2 JP3 JP5 JP6 speed speed 75MHz 50MHz 1.5x 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 90MHz 60MHz 1.5x 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 100MHz 66MHz 1.5x 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 120MHz 60MHz 2x 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 133MHz 66MHz 2x 1 & 2 2 & 3 1 & 2 1 & 2 2 & 3 150MHz 60MHz 2.5x 2 & 3 1 & 2 1 & 2 2 & 3 2 & 3 166MHz 66MHz 2.5x 1 & 2 2 & 3 1 & 2 2 & 3 2 & 3 180MHz 60MHz 3x 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 200MHz 66MHz 3x 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (AM K6) CPU Clock Multiplier JP1 JP2 JP3 JP5 JP6 speed speed 166MHz 66MHz 2.5x 1 & 2 2 & 3 1 & 2 2 & 3 2 & 3 200MHz 66MHz 3x 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2 233MHz 66MHz 3.5x 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (IDT C6) CPU Clock Multiplier JP1 JP2 JP3 JP5 JP6 speed speed 150MHz 50MHz 3x 2 & 3 2 & 3 1 & 2 2 & 3 1 & 2 180MHz 60MHz 3x 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (INTEL) CPU Clock Multiplier JP1 JP2 JP3 JP5 JP6 speed speed 75MHz 50MHz 1.5x 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 90MHz 60MHz 1.5x 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 100MHz 66MHz 1.5x 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 120MHz 60MHz 2x 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 133MHz 66MHz 2x 1 & 2 2 & 3 1 & 2 1 & 2 2 & 3 150MHz 60MHz 2.5x 2 & 3 1 & 2 1 & 2 2 & 3 2 & 3 166MHz 66MHz 2.5x 1 & 2 2 & 3 1 & 2 2 & 3 2 & 3 180MHz 60MHz 3x 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 200MHz 66MHz 3x 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2 Note: Pins designated should be in the closed position. CPU SPEED SELECTION (INTEL MMX) CPU Clock Multiplier JP1 JP2 JP3 JP5 JP6 speed speed 166MHz 66MHz 2.5x 1 & 2 2 & 3 1 & 2 2 & 3 2 & 3 200MHz 66MHz 3x 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2 233MHz 66MHz 3.5x 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CPU TYPE SELECTION Type JP10 AM K5 Pins 2 & 3 closed, Pins 5 & 6 closed AM K6 Pins 1 & 2 closed, Pins 4 & 5 closed CX 6X86 Pins 2 & 3 closed, Pins 5 & 6 closed CX 6X86L Pins 1 & 2 closed, Pins 4 & 5 closed CX 6X86MX Pins 1 & 2 closed, Pins 4 & 5 closed IBM 6X86 Pins 2 & 3 closed, Pins 5 & 6 closed IBM 6X86L Pins 1 & 2 closed, Pins 4 & 5 closed IBM 6X86MX Pins 1 & 2 closed, Pins 4 & 5 closed IDT C6 Pins 2 & 3 closed, Pins 5 & 6 closed P54C Pins 2 & 3 closed, Pins 5 & 6 closed P55C Pins 1 & 2 closed, Pins 4 & 5 closed CPU VOLTAGE SELECTION Voltage JP11A JP11B JP11C JP11D JP11E 2.5v Open Open Open Open Open 2.8v Open Open Open Open Closed 2.9v Open Open Open Closed Open 3.2v Open Open Closed Open Open 3.3v Open Closed Open Open Open 3.5v Closed Open Open Open Open