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111

Troubleshooting a PC/104 System

If you have reviewed the preceding table and still cannot isolate the problem with your cpuModule,
please try the following troubleshooting steps. Even if the resulting information does not help you
find the problem, it will be very helpful if you contact technical support.

Simplify the system

. Remove items one at a time and see if one particular item seems to cause the

problem.

Swap components.

Try replacing items in the system one-at-a-time with similar items.

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Summary of Contents for cpuModule CMC6686GX

Page 1: ...uy your excess underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing R...

Page 2: ...CMC6686GX cpuModuleTM User s Manual RTD Enhanced Award BIOS Versions 4 51 xx USA Publication CMC6686 2001 09 05 I IS SO O9 90 00 01 1 a an nd d A AS S9 91 10 00 0 C Ce er rt ti if fi ie ed d...

Page 3: ......

Page 4: ...cpuModuleTM User s Manual REAL TIME DEVICES USA INC PO Box 906 State College PA 16804 0906 Phone 1 814 234 8087 FAX 1 814 234 5218 E mail sales rtdusa com techsupport rtdusa com web site http www rtdu...

Page 5: ...l Safe Boot ROM Publication CMC6686 2001 09 05 Published by Real Time Devices USA Inc P O Box 906 State College PA 16804 0906 Copyright 1999 2000 by Real Time Devices USA Inc All rights reserved Print...

Page 6: ...9 orCN3 37 Serial Port 1 P1or CN7 39 Serial Port 2 P5 or CN8 42 Parallel Port P3 or CN6 45 Multifunction Connector P8 or CN5 47 Bus Mouse Connector P6 or CN4 49 PC 104 Bus P4 or CN1 and P7 or CN2 50 C...

Page 7: ...Reference 99 Jumpers 100 Default Jumper Settings 103 Solder Jumpers 104 Mechanical Dimensions 105 686GX233 or 686GX300 Processor Thermal Management 106 Chapter 7 Troubleshooting 107 Common Problems a...

Page 8: ...mation on connecting the cpuModule to peripherals Chapter 4 Configuring the cpuModule Provides information on configuring hardware and software Chapter 5 Using the cpuModule Provides information neede...

Page 9: ...ions of a AT compatible computer a keyboard interface an ECP EPP parallel port two versatile RS232 422 485 serial ports a Real Time Clock a speaker port It also enhances standard AT compatible compute...

Page 10: ...TD Enhanced Award BIOS is also implemented in the cpuModule This BIOS supports ROM DOS MS DOS and Windows operating systems Drivers in the BIOS allow booting from floppy disk hard disk boot block flas...

Page 11: ...provided on board 16 KB L1 cache Math coprocessor C6 DMA Interrupts Timers Six 6 DMA channels 8237 compatible Fifteen 15 interrupt channels 8259 compatible Three 3 counter timers 8254 compatible Memo...

Page 12: ...ery for date and time backup Watchdog Timer with time out of 1 2 seconds BIOS RTD Enhanced Award BIOS Directly supportsSolid State Disk SSD and M Systems DiskOnChip User configurable using built in Se...

Page 13: ...ating environment Power supply 5V 5 10 Watts 686 GX1 or GXLVprocessor operating temperature 40 to 85 degrees C case with proper cooling See 686GX233 or 686GX300 Processor Thermal Management Operating...

Page 14: ...you are one of these users you can get your system up and running quickly by following a few simple steps described in this chapter Briefly these steps are Connect power Connect the utility cable Con...

Page 15: ...14 Basic Connector Locations The figure s and table below show the connectors used in this chapter Your board may be one of two designs each indicated by a figure...

Page 16: ...15...

Page 17: ...onnectors Connector Function Size P1 Serial Port1 10 pin P3 Parallel Port1 26 pin P4 PC 104 Bus XT 64 pin P5 Serial Port2 10 pin P6 PS 2 Mouse 4 pin P7 PC 104 bus AT 40 pin P8 Multifunction 10 pin P9...

Page 18: ...OM allows the system to boot without any attached storage devices i e floppy IDE SSD CN1 PC 104 Bus XT 64 pin CN2 PC 104 bus AT 40 pin CN3 Auxiliary power 12 pin CN4 PS 2 Mouse 4 pin CN5 Multifunction...

Page 19: ...o purchase our cable kit for the cpuModule The XK CM27 cable kit contains the following Multifunction cable keyboard socket battery reset speaker Two serial port cables DIL10 to DSUB9 Parallel port ca...

Page 20: ...o not need to make additional connections to supply power If you are using the cpuModule without a PC 104 stack or with a stack that does not include a power supply refer to Auxiliary Power P9 or CN3f...

Page 21: ...tion connector making sure the orienta tion of pin 1 is correct If you are using the Multifunction cable from our cable kit the cable provides a small speaker a 5 pin circular DIN connector for the ke...

Page 22: ...it NOTE Some newer keyboards may use a smaller mini DIN connector you will need an adapter to plug these keyboards into the cpuModule Many keyboards are switchable between PC XT and AT operating modes...

Page 23: ...lectricity Remove the cpuModule from its anti static bag Check that keying pins in the bus connector are properly positioned Check the stacking order make sure an XT bus card will not be placed betwee...

Page 24: ...e requesting you press Del to enter the Setup program If you don t press Del the cpuModule will try to boot from the current settings If you press Del the cpuModule will enter Setup Once you have conf...

Page 25: ...efault selection IDE Interface 0 Master Auto detect IDE Interface 0 Slave Auto detect IDE Interface 1 Master Auto detect IDE Interface 1 Slave Auto detect Boot device Floppy then hard disk BIOS Extens...

Page 26: ...l Safe Boot ROM allows files to be transferred on or off the storage devices in the system by use of REMSERV and REMDISK two ROM DOS utilities If the user would need remote access to the system run RE...

Page 27: ...ncorrectly configure the cpuModule using Setup If this happens the cor rect procedure is Start Re booting the cpuModule While the system is re booting repeatedly press the Del key until the cpuModule...

Page 28: ...you need more de tails please refer to the following chapters for more information on configuring and using the cpu Module Phone 814 234 8087 Fax 814 234 5218 Real Time Devices USA Inc P O Box 906 103...

Page 29: ...28...

Page 30: ...29...

Page 31: ...30...

Page 32: ...31 CHAPTER 3 CONNECTING THE CPUMODULE This chapter contains necessary information to any of the connectors on the cpuModule...

Page 33: ...you are using different peripherals you may need to change the cpuModule settings In that case please see Configuring with the RTD Enhanced Award BIOS Default Peripheral Settings Item Setting Control...

Page 34: ...33 Connector Locations The figure and table below show all connectors and the SSD socket of the cpuModule...

Page 35: ...34 CMC6686GX Connector Locations...

Page 36: ...35...

Page 37: ...n Size P1 Serial port 1 10 pin P3 Parallel port 26 pin P4 PC 104 bus XT 64 pin P5 Serial port 2 10 pin P6 Bus Mouse 4 pin P7 PC 104 bus AT 40 pin P8 Multifunction 10 pin P9 Auxiliary Power 8 pin CN1 P...

Page 38: ...pinout of the Auxiliary Power connector is WARNING If you improperly connect power the module will almost certainly be destroyed Please verify power connections to the module before applying power Aux...

Page 39: ...sP4 or CN1 and P7 or CN2 The 3 3 volt pins on power connector P9 or CN3 are used to monitor the onboard 3 3 voltage regulator In effect these pins 10 and 12 become outputs Don t use these pins as a so...

Page 40: ...hanced UART mode and includes a 16 byte FIFO Please refer to any standard PC AT hardware reference for the register map of the UART RS232 Serial Port Default The full duplex RS232 mode is the default...

Page 41: ...t The following table gives the pinout of connector P1or CN7when RS422 or RS485 modes are en abled 9 7 5 3 1 GND DTR TXD RXD DCD GND RI CTS RTS DSR 10 8 6 4 2 NOTE A 120 ohm termination resistors is p...

Page 42: ...e always enabled The transmitters are enabled by manipulating the Request To Send RTS signal of the first serial port controller This sig nal is controlled by writing bit 1 of the Modem Control Regis...

Page 43: ...to any standard PC AT hardware reference for the register map of the UART RS232 Serial Port Default The full duplex RS232 mode is the default setting on the cpuModule With this mode enabled con necto...

Page 44: ...nnector pins the pinout is 7 DTR Data Terminal Ready out 20 8 RI Ring Indicate in 22 9 10 GND Signal Ground 7 NOTE A 120 ohm termination resistors is provided on the cpuModule Termi nation is usually...

Page 45: ...ating the Request To Send RTS signal of the first serial port controller This sig nal is controlled by writing bit 1 of the Modem Control Regis ter MCR as follows If MCR bit 1 1 then RTS 0 and serial...

Page 46: ...ngth of the cable connecting the cpu Module and parallel device less than 3 meters 10 feet Parallel Port Connector P3 or CN6 Parallel Port Connector P3 or CN6 Pin Signal Function in out DB25 1 STB Str...

Page 47: ...46 21 BSY Busy in 11 22 GND Signal ground 24 23 PE Paper End in 12 24 GND Signal ground 25 25 SLCT Ready To Receive in 13 26 GND Signal ground 26 Parallel Port Connector P3 or CN6...

Page 48: ...nected to the Multifunction connector Usually PC key boards come with a cable ending with a 5 pin male DIN connector The following table lists the relationship between the Multifunction connector pins...

Page 49: ...in 9 of the multifunction connector is the connection for an external backup battery in the range 2 40 V to 4 15 V typically 3 0 or 3 6 V This battery is used by the cpuModule when system power is rem...

Page 50: ...N4 The following table gives the pinout of the Bus Mouse connector Facing the connector pins the pinout is Bus Mouse Connector P6 or CN4 Pin Signal Function in out 1 5 V 5 Volts out 2 GND Ground out 3...

Page 51: ...n of the PC 104 bus see Notes below AT Bus table PC 104 XT Bus Connector P4 or CN1 Pin Row A Row B 1 N C 0V 2 SD7 RESETDRV 3 SD6 5V 4 SD5 IRQ2 5 SD4 5V 6 SD3 DRQ2 7 SD2 12V 8 SD1 N C 9 SD0 12V 10 IOCH...

Page 52: ...the PC 104 specification and should be implemented on all mating PC 104 modules Signals marked with are active low All bus lines can drive a maximum current of 4 mA at TTL voltage levels PC 104 AT Bu...

Page 53: ...states It is used only for 16 bit boards IOCHCHK I I O Channel Check active low indicates an error condition that can not be corrected IOCHRDY I I O Channel Ready this line usually high ready is pulle...

Page 54: ...gh with a 4 7 K ohm resistor and may be driven by another card in the PC 104 stack RESETDRV O This line active high is used to reset the devices on the bus at power on or after a reset command SA0 19...

Page 55: ...54 PC 104 Bus Termination Termination of PC 104 bus signals is not recommended since this cpuModule incorporates source termination on bus signals and may cause malfunctions of the cpuModule...

Page 56: ...ULE BIOS SETUP This chapter contains information to configure the cpuModule Topics covered in this chapter include Entering Setup Default Configuration Disabling Fail Safe Boot ROM Configuring Using t...

Page 57: ...p Apply power to the system Repeatedly press the DEL key to enter setup Another way applies if you have a floppy attached When the floppy is accessed for the first time a sound will come from the flop...

Page 58: ...terface 0 Slave Auto detect IDE Interface 1 Master Auto detect IDE Interface 1 Slave Auto detect Boot device Floppy then hard disk BIOS Extension Disabled Floppy Drive 1 3 5 1 44 Meg Floppy Drive 2 no...

Page 59: ...it off and turning it on or by using the reset button while the system is booting repeatedly press the DEL key to enter the BIOS setup Choose INTEGRATED PERIPHERALS using the arrow keys and enter Onc...

Page 60: ...owing table lists possible configurations for the SSD socket SSD Support Type Part Operation Capacity Notes Atmel 5V Flash 29C010A read write 128KB 29C040A read write 512KB BIOS Extension Devices Disk...

Page 61: ...finished with Setup save your changes and exit The system will automatically reboot Using the Setup Program All displays in Setup consist of two areas The left area lists the available selections The...

Page 62: ...options PNP PCI Config uration Setup Press Enter to select Set PNP and PCI options Load BIOS De faults Press Enter to select Load the setup defaults stored in the BIOS Load Setup De faults Press Ente...

Page 63: ...Slave Secondary Mas ter Secondary Slave PgUp PgDn Selects the IDE hard disk type for each interface An interface must have a master before a slave can be added Make sure you configure the drive jumper...

Page 64: ...floppy drive A and B Enable Floppy connected after the twist in the floppy wire will be Drive B and floppy connected before the twist in the floppy wire will be Drive A Disable Normal Floppy connected...

Page 65: ...at the prompt Note To disable security select Password setting at the main menu and then you will be asked to enter a password Do not type anything just press En ter and it will disable security Once...

Page 66: ...65 Cyrix 6x86 MII CPUID PgUp PgDn Enable or disable the CPUID instruction Enable Allow the CPUID instruction Disable Don t allow the CPUID instruction BIOS Features Setup Fields...

Page 67: ...quest This delay takes place because the CPU is operating so much faster than the I O bus that the CPU must be delayed to allow for the completion of the I O Field Active keys Selections 16 bit I O re...

Page 68: ...er Defined User selects the power manage ment functions to suit the application Doze Mode PgUp PgDn Select inactivity time delay before entering doze mode Disable Doze mode off 1 1 Second 2 2 Seconds...

Page 69: ...5 IRQ 5 7 IRQ 7 9 IRQ 9 10 IRQ 10 11 IRQ 11 Throttle Duty Cycle PgUp PgDn Select throttle duty cycle 12 5 12 5 Minimum savings 33 3 33 3 50 0 50 0 75 0 75 0 Maximum savings RTC alarm function PgUp PgD...

Page 70: ...bring the CPU out of power management PgUp PgDn Select IRQs that will wake the CPU out of suspend mode IRQ 1 IRQ 3 IRQ 4 IRQ 5 IRQ 6 IRQ 7 IRQ 9 IRQ 10 IRQ 11 IRQ 12 IRQ 13 IRQ 14 IRQ 15 Power Managem...

Page 71: ...automatically return to disable after the next boot IRQ assigned to PgUp PgDn Select whether interrupts are to be used by legacy ISA devices or PCI PNP ISA devices IRQ 3 PCI ISA PNP or Legacy ISA IRQ...

Page 72: ...re gion to exclude from PCI PNP usage NA Upper memory not used by legacy ISA devices C800h CC00h D000h D400h D800h DC00h Used memory length PgUp PgDn Select the length of an upper memory region to ex...

Page 73: ...8h and interrupt 3 3E8h IRQ 4 Address 3E8h and interrupt 4 2E8h IRQ 3 Address 2E8h and interrupt 3 Mode PgUp PgDn Select mode for onboard serial port 1 RS 232 RS 232 driver receiver enabled RS 422 485...

Page 74: ...Chip Disable Do not use BIOS extension device C800 Window at C8000h CFFFFh D000 Window at D0000h D7FFFh D800 Window at D8000h DFFFFh device in SSD Socket PgUp PgDn Select a SSD device to fill the SSD...

Page 75: ...t and save changes Enter Exit setup and save changes Exit discarding changes Enter Exit setup without saving the changes Load setup de faults Enter Loads default values for all setup items Discard cha...

Page 76: ...o develop their own applications programs for the cpuModule This chapter includes information on the following topics Memory map I O Address map Interrupts Power On Self Tests POSTs System Functions W...

Page 77: ...ramming language references for information on memory managers First Megabyte Memory Map FFFFFH C0000H ROM 256 KB BIOS in Flash EPROM shadowed into DRAM dur ing runtime EFFFFH C0000H Run time user mem...

Page 78: ...peripherals to the system you must ensure they do not use reserved addresses listed below or mal functions will occur I O Addresses Reserved for the cpuModule Address Range Bytes Device 000H 00FH 16...

Page 79: ...is active at any time You can use Setup to select which one is active or to disable it entirely 3 Only one of the I O addresses shown for the Parallel printer port is active at any time You can use Se...

Page 80: ...add any PC 104 modules or other peripherals to the system you must ensure they do not use interrupts needed by the cpuModule or malfunctions will occur Hardware Interrupts Used on the cpuModule Interr...

Page 81: ...boots begins execution POST software performs a series of hardware tests sets up the machine as defined in Setup and begins the boot of the OS The second part of the BIOS is known as the CORE BIOS It...

Page 82: ...TER No boot device was found This could mean that either a boot drive was not detected or the drive does not contain proper system boot files Insert a system disk into Drive A and press Enter If you a...

Page 83: ...bad memory chips MEMORY SIZE HAS CHANGED SINCE LAST BOOT Memory has been added or removed since the last boot In EISA mode use Configuration Utility to reconfigure the memory configuration In ISA mode...

Page 84: ...s are being pressed during the boot Manufacturing POST loop BIOS ROM checksum error System halted The checksum of ROM address F0000H FFFFFH is bad Memory test fail BIOS reports the memory test fail if...

Page 85: ...ngle long beep followed by two short beeps 0E 1 Initialize the APIC Multi Processor BIOS only 2 Test video RAM If Monochrome display device found 3 Show messages including Award Logo Copyright string...

Page 86: ...by translate the RTC time value into a timer tick value 60 Setup Virus Protection Boot Sector Protection functionality according to Setup setting 1A 1D Reserved 1E If EISA NVM checksum is good execut...

Page 87: ...with default values standard devices includes DMA controller 8237 Programmable Interrupt Controller 8259 Programmable Interval Timer 8254 RTC chip C1 Auto detection of onboard DRAM Cache C3 1 Test sys...

Page 88: ...nfiguration is listed below BIOS Default Configuration Function Default selection IDE Interface 0 Master Auto detect IDE Interface 0 Slave Auto detect IDE Interface 1 Master Auto detect IDE Interface...

Page 89: ...he Stored Configuration Under certain circumstances you may want to bypass the configuration stored on the board To do this press the Del key to enter Setup and then you can then reconfigure the cpuMo...

Page 90: ...Control Some of the cpuModule hardware is controlled directly without using BIOS routines These include Watchdog Timer Real Time Clock Control Parallel Port Control The following sections describe use...

Page 91: ...ould read the register and only change the bit you need to change After you enable the watchdog timer you must reset it at least once every 1 2 seconds by reading I O 1Eh The data read does not matter...

Page 92: ...ected register by writing or reading respectively the data register at address 71h Registers of the Real Time Clock are shown below RTC access is illustrated in the following QuickBasic program fragme...

Page 93: ...92 Parallel Port Control The parallel port may be operated in SPP output only EPP bi directional and ECP extended ca pabilities modes The mode may be selected in Setup or by application software...

Page 94: ...cessor Clock Control The processor clock is controller by solder jumpers on the board These are set at the factory and should not be adjusted Please see Power Consumption for a listing of Power Consum...

Page 95: ...o eliminate mag netic storage devices and place your operating system and application software into the cpuModule s Solid State Disk SSD The following section describes two distinctly different ways y...

Page 96: ...a device which installs as a BIOS Extension BIOS Extension Devices such as DiskOnChip and PromDisk provide a relatively large amount of read write disk space These devices generally appear similar to...

Page 97: ...96...

Page 98: ...re Apply power to the cpuModule and run Setup Set A BIOS Extension Window on the advanced setup page Save your changes and exit Setup Turn off the cpuModule Install the BIOS Extension Device into the...

Page 99: ...98...

Page 100: ...R 6 HARDWARE REFERENCE This appendix gives information on the cpuModule hardware including jumper settings and locations solder jumper settings and locations mechanical dimensions processor thermal ma...

Page 101: ...o settings pins 1 and 2 connected indicated as closed pins 1 and 2 un connected indicated as open The figure below shows the locations of the jumpers used to configure the cpuModule To use the figure...

Page 102: ...101...

Page 103: ...rial port for RS 422 485 mode Factory Default Open no termination JP2 2 pin jumper Used to enable disable 120 ohm termination resistor on second serial port for RS 422 485 mode Factory Default Open no...

Page 104: ...103 Default Jumper Settings JP2 2 pin jumper Open no termination...

Page 105: ...104 Solder Jumpers Solder jumpers are set at the factory and are rarely changed...

Page 106: ...105 Mechanical Dimensions The following figure shows mechanical dimensions of the module in inches CMC6686GX Mechanical Dimensions 0 005...

Page 107: ...upplied with an attached fan or heatsink with a thermal resistance of 5 C W The table below shows the maximum ambient temperature allowed vs CA NOTE This cpuModule is not warranted against damage caus...

Page 108: ...unter with operation of your cpuModule are due to common errors This chapter will help you get your system op erating properly It contains Common problems and solutions Troubleshooting a PC 104 system...

Page 109: ...ck for an SSD memory installed in socket backwards will not boot from particu lar drive or device device not bootable use sys command on drive or re format the device using the s switch device not for...

Page 110: ...r two software devices e g EMM386 PCMCIA drivers etc trying to use the same memory addresses check for hardware and software devices trying to use the same memory address check for an address range sh...

Page 111: ...ller for video sound or beep commands won t boot from PCMCIA hard drive booting from PCMCIA is not supported boot from SSD use autoexec bat to load PCMCIA drivers run application from PCMCIA card COM...

Page 112: ...e following troubleshooting steps Even if the resulting information does not help you find the problem it will be very helpful if you contact technical support Simplify the system Remove items one at...

Page 113: ...ormation cpuModule model BIOS version and serial number list of all boards in system list of settings from cpuModule Setup program printout of autoexec bat and config sys files if applicable descripti...

Page 114: ...etails of the problem or situation along with their phone and fax numbers address and e mail address if available 5 List your shipping address 6 Indicate the shipping method you would like used to ret...

Page 115: ...114...

Page 116: ...L TIME DEVICES USA OR AS A RESULT OF SERVICE OR MODIFICATION BY ANYONE OTHER THAN REAL TIME DEVICES USA EXCEPT AS EXPRESSLY SET FORTH ABOVE NO OTHER WARRANTIES ARE EXPRESSED OR IMPLIED INCLUDING BUT N...

Page 117: ...116 Real Time Devices USA Inc P O Box 906 103 Innovation Blvd State College PA 16803 USA Our website www rtdusa com...

Page 118: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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