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24 PCM-7890 User Manual

ATX Soft-Power Switch connector (J8)

The ATX Soft-Power switch connector is a 2-pin header. Locate
the power switch cable from your system. It is a 2-pin female
connector. Plug this connector to the Soft-Power switch connector
maketed J8.

DOC address select (J7)

The DiskOnChip 2000 occupies an 8 Kbyte window in the upper
memory address range of D400 to E000. You should ensure this
does not conflict with any other device's memory address. J7
controls the memory address of the Flash disk.

DiskOnChip 2000 memory address (J7)
Memory address (HEX)
DISABLE

DC00

D400

D800*

* default

These addresses might conflict with the ROM BIOS of other
peripheral boards. Please select the appropriate memory address
to avoid memory conflicts.

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Summary of Contents for PCM-7890

Page 1: ...PCM 7890 All in One Pentium II Single Board Computer with LCD Ethernet Audio 4 COMs...

Page 2: ...NT TO PART 15 OF THE FCC RULES THESE LIMITS ARE DESIGNED TO PROVIDE REASON ABLE PROTECTION AGAINTST HARMFUL INTERFER ENCE WHEN THE EQUIPMENT IS OPERATED IN A COMMERCIAL ENVIRONMENT THIS EQUIPMENT GENE...

Page 3: ...Inc AMI is a trademark of American Megatrends Inc Award is a trademark of Award Software International Inc Cyrix is a trademark of Cyrix Corporation IBM PC AT PS 2 and VGA are trademarks of Internati...

Page 4: ...from your products So if you run into technical difficulties we are here to help For the most frequently asked questions you can easily find answers in your product documentation These answers are nor...

Page 5: ...service time and freight Please consult your dealer for more details If you think you have a defective product follow these steps 1 Collect all the information about the problem encountered For examp...

Page 6: ...wings User s Manual this manual in PDF file Ethernet drivers and utilities VGA drivers and utilities Audio drivers and utilities Lastest BIOS as of the CD ROM was made The PCM 7890 require several cab...

Page 7: ...oroughly before you install and use the board The product that you have purchased comes with an one year limited warranty but AAEON will not be responsible for misuse of the product Therefore we stron...

Page 8: ...M DIMMs 18 Cache Memory 19 System temperature thermal sensor J1 20 CPU frequency ratio J3 20 Pentium II CPU jumper setting 21 Clear CMOS J4 23 COM3 COM4 RI pim voltage select J5 J6 23 DOC address sele...

Page 9: ...LED signal connectors LED1 42 DiskOnChip socket U21 43 DiskOnChip DOC 2000 Installation 44 Chapter 3 Award BIOS Setup 45 Starting setup 46 Setup keys 47 Getting help 48 In case of problem 48 Main setu...

Page 10: ...Driver installation 94 OS 2 95 Windows NT 3 51 97 Driver installation 97 Windows NT 4 0 98 Driver installation 98 Chapter 5 Ethernet Software Configuration 99 Ethernet software configuration 100 Chap...

Page 11: ...er 107 Programming the watchdog timer 108 Watchdog timer 108 Configuration register 108 Appendix B Installing PC 104 Modules 115 Installing PC 104 modules 116 Appendix c Optional Extras 119 PCM 10489...

Page 12: ......

Page 13: ...Chapter 1 General Information 1 1 General Information This chapter gives background informa tion on the mainboard Sections include Board specifications Layout and dimensions C H A P T E R...

Page 14: ...in high speed PCI IDE controller supports Ultra DMA 33 mode Up to two IDE devices can be connected including large hard disks CD ROM drives and tape backup drives etc The PCM 7890 also features power...

Page 15: ...it PCI bus SVGA LCD controller supports LCD CRT display 100Base Tx Ethernet interface supports Remote Boot ROM function 32 bit audio interface Sound Blaster Pro compatible Supports Bus Master and Ultr...

Page 16: ...pports up to two floppy disk drives 5 25 360KB and 1 2MB and or 3 5 720KB 1 44MB and 2 88MB Parallel port One bi directional parallel port Supports SPP ECP and EPP modes Serial ports Three RS 232 and...

Page 17: ...TFT DSTN and Mono displays Can display both CRT and Flat Panel simultaneously Resolution Up to 1024x768 64K colors PCI Sound Interface Chipset Creative Ensoniq ES1373 Wave Table synthesis 32 Voice Pol...

Page 18: ...ion Slots PC 104 connector One 16 bit 104 pin connector onboard PCI slot One 32 bit PCI slot onboard Mechanical and environmental Power supply voltage 5V 4 75V to 5 25V 12V 11 4V to 12 6V Typicalpower...

Page 19: ...Chapter 1 General Information 7 Board layout...

Page 20: ...8 PCM 7890 User Manual 5 08 40 64 97 16 100 97 119 38 3 56 174 63 177 17 193 04 203 20 198 12 5 08 9 53 135 89 95 25 146 05 140 97 Board dimensions PCM 7890 dimensions dimensions in mm...

Page 21: ...pter describes how to set up the main board hardware including instruc tions on setting jumpers and connecting peripherals switches and indicators Be sure to read all the safety precautions before you...

Page 22: ...ch of the board s jumpers and connectors Jumpers Label Function J1 System temperature thermal sensor J2 Reserve for future use default 1 2 close J3 CPU frequency ratio J4 Clear CMOS J5 COM3 RI pin vol...

Page 23: ...r CN8 IrDA connector CN9 ATX power connector CN10 LCD display connector CN11 CD ROM signal input connector CN12 Keyboard and PS 2 mouse connector CN13 VGA display connector CN14 Audio connector CN15 1...

Page 24: ...12 PCM 7890 User Manual Locating jumpers J2 J9 J13 J12 J14 J11 J15 J10 J8 J1 J4 J7 J6 J5 J3...

Page 25: ...Chapter 2 Installation 13 Locating connectors CN1 CN4 CN12 U21 CN6 CN8 CN7 CN17 CN13 LED1 PC1 CN15 CN14 CN16 CN11 CN9 CN10 CN3...

Page 26: ...ns with the clip To open a jumper you remove the clip Sometimes a jumper will have three pins labeled 1 2 and 3 In this case you would connect either pins 1 and 2 or 2 and 3 The jumper settings are sc...

Page 27: ...ts can be dam aged by the sudden rush of power Only experi enced electronics personnel should open the PC chassis Caution Always ground yourself to remove any static charge before touching the PC boar...

Page 28: ...ese are two types of cooling methods one with a cooling fan attached to the heat sink of the Pentium II module the other with a huge heat sink without any cooling fan attached Both cooling methods for...

Page 29: ...Chapter 2 Installation 17 Mounting CPU and cooling modules Step 1 Mounting CPU and cooling modules Step 2 Step 1 Step 2...

Page 30: ...or up CPU is used The PCM 7890 can only accept PC 100 SDRAM DIMM Module Single sided modules are typically 16 or 64 MB double sided modules are usually 32 or 128 MB Memory Installation Procedures To...

Page 31: ...n the external cache memo ries The cache size in the Pentium II CPU is either 256 KB or 512 KB Normally for workstation and server application the 256 KB version is enough However if your system is fo...

Page 32: ...bus clock 66 or 100 MHz CPU frequency ratio J3 3x 3 5x 4x 4 5x 5x 5 5x default 1 3 5 2 4 6 1 3 5 2 4 6 1 3 5 2 4 6 1 3 5 2 4 6 1 3 5 2 4 6 1 3 5 2 4 6 System temperature thermal sensor J1 This jumper...

Page 33: ...on 21 Pentium II CPU jumper setting examples Pentium II CPU J3 233 66MHz 266 66MHz 300 66MHz 333 66MHz 300 100MHz 350 100MHz 400 100MHz 1 3 5 2 4 6 1 3 5 2 4 6 1 3 5 2 4 6 1 3 5 2 4 6 1 3 5 2 4 6 1 3...

Page 34: ...22 PCM 7890 User Manual Pentium II CPU J3 450 100MHz 500 100MHz 550 100MHz default 1 3 5 2 4 6 1 3 5 2 4 6 1 3 5 2 4 6...

Page 35: ...e jumper back to 1 2 closed Clear CMOS J4 Protect Clear CMOS J4 default 1 3 5 2 4 6 1 3 5 2 4 6 1 3 5 2 4 6 1 3 5 2 4 6 1 3 5 2 4 6 1 3 5 2 4 6 COM3 COM4 RI pin voltage select J5 J6 The 9th pin of COM...

Page 36: ...iskOnChip 2000 occupies an 8 Kbyte window in the upper memory address range of D400 to E000 You should ensure this does not conflict with any other device s memory address J7 controls the memory addre...

Page 37: ...RS 232 RS 422 RS 485 J10 J14 default Audio output select J15 You can select the output mode of onboard audio connector CN14 by setting J15 Speaker out is the output signal amplified by onboard amplifi...

Page 38: ...ing voltage by setting J11 The configurations are as follows LCD driving voltage select J11 5V 3 3V default 1 2 3 1 2 3 J12 LCD clock signal select J12 You can select the LCD control signal by setting...

Page 39: ...ction ATX power connector CN9 Pin Signal Pin Signal 1 N C 11 N C 2 N C 12 12V 3 GND 13 GND 4 5V 14 PON 5 GND 15 GND 6 5 V 16 GND 7 GND 17 GND 8 N C 18 5V 9 5V SB 19 5V 10 12V 20 5V CPU fan power conne...

Page 40: ...us interfaces which give complete plug and play hot attach detach for up to 127 external devices The USB interfaces comply with USB specification Rev 1 0 and can be disabled in the system BIOS setup U...

Page 41: ...pin to 2 x 40 pin connect Wire number 1 on the cable is normally red or blue and the other wires are usually gray 1 Connect one end of the cable to CN6 Make sure that the red or blue wire corresponds...

Page 42: ...DATA 10 9 DATA 4 10 DATA 11 11 DATA 3 12 DATA 12 13 DATA 2 14 DATA 13 15 DATA 1 16 DATA 14 17 DATA 0 18 DATA 15 19 SIGNAL GND 20 N C 21 N C 22 GND 23 IO WRITE 24 GND 25 IO READ 26 GND 27 IO CHANNEL RE...

Page 43: ...ons for a speaker hard disk access indicator and an input switch for resetting the card Front panel connector CN7 Pin Signal 1 HDD LED Hard disk active 2 HDD LED VCC 3 Speaker 4 Speaker GND 5 GND 6 NC...

Page 44: ...connection user can transfer files to or from laptops notebooks PDA and printers This connector supports HPSIR 115 2Kbps 2 meters ASK IR 56Kbps and Fast IR 4Mbps 2 meters Install infrared module onto...

Page 45: ...support these displays one for standard CRT VGA monitors and one for flat panel displays VGA display connector CN13 CN13 is a 16 pin dual in line header used for conventional CRT displays A simple one...

Page 46: ...ne completely via the software utility You do not have to set any jumpers LCD connector CN10 Pin Signal Pin Signal 1 12 VDC 2 12 VDC 3 GND 4 GND 5 5 VDC 6 5 VDC 7 ENAVEE 8 GND 9 P0 10 P1 11 P2 12 P3 1...

Page 47: ...e following table Audio connector CN14 Pin Signal Pin Signal 1 Mic In 2 Reserve for future use 3 GND 4 Reserve for future use 5 Line In Left 6 Reserve for future use 7 Line In Right 8 Reserve for futu...

Page 48: ...will report an error or fail during power on self test POST after a reset if the keyboard is not present The main board BIOS Advanced setup menu allows you to select Present or Absent under the Syste...

Page 49: ...connector is a standard RJ 45 connector The onboard Realtek RTL8139A fast Ethernet controller supports 10Mb s and 100 Mb s N way auto negotiation opera tion 100Base Tx Ethernet connector CN15 Pin Sig...

Page 50: ...M2 COM3 COM4 RS 232 422 485 serial port PIN SIGNAL PIN SIGNAL COM1 1 DCDA 2 DSRA 3 RXDA 4 RTSA 5 TXDA 6 CTSA 7 DTRA 8 RIA 9 GND 10 N C COM2 11 DCDB 12 DSRB 422TXD 485DATA 13 RXDB 14 RTSB 422TXD 485DAT...

Page 51: ...17 Make sure that the red or blue wire corresponds to pin 1 on the connector 2 Attach the appropriate connector on the other end of the cable to the floppy drive s You can use only one connector in th...

Page 52: ...ELECT 3 GND 4 N C 5 GND 6 DRIVE TYPE 7 GND 8 INDEX 9 GND 10 MOTOR 0 11 GND 12 DRIVE SELECT 1 13 GND 14 DRIVE SELECT 2 15 GND 16 MOTOR 1 17 GND 18 DIRECTION 19 GND 20 STEP 21 GND 22 WRITE DATA 23 GND 2...

Page 53: ...ble has a 26 pin connector on one end and a DB 25 connector on the other Parallel port IRQ The mainbaord supports one parallel port The port is designated as LPT1 and can be disabled or changed to LPT...

Page 54: ...ators Ethernet active signal LED J14 J15 Flashing Tx or Rx LEDs indicate that the PCM 7890 is transmit ting or receiving data Ethernet link signal LED A continuously lit LED indicates good linkage bet...

Page 55: ...m 2MB up to 144MB unformatted In order to manage the disk the DiskOnChip 2000 includes the TrueFFS M Systems Flash File System proprietary software The DiskOnChip 2000 package is pin to pin compatible...

Page 56: ...ith thememorywindow Youshoulddisablethememoryshadowfrom the BIOS SETUP if the DOC cannot be accessed Configure DOC as a boot device To configure a DOC as a boot drive you should copy the operating sys...

Page 57: ...Chapter 3 Award BIOS Setup 45 3 Award BIOS Setup This chapter describes how to configure the BIOS for the PCM 7890 C H A P T E R...

Page 58: ...ng POST you can start the Setup program in one of two ways 1 By pressing Del immediately after switching the system on or 2 By pressing Del or pressing Ctrl Alt Esc when the following message appears...

Page 59: ...ic value or make changes PgDn Decrease the numeric value or make changes F1 General help only for Status Page Setup Menu and Option Page Setup Menu F2 Change color from total 16 colors F2 to select co...

Page 60: ...resets your system to its default configuration You can invoke this override by immediately pressing Insert when you restart your computer You can restart by either using the ON OFF switch the RESET...

Page 61: ...andard and PCI Local Bus Configuration configuration options Integrated I O subsystems that depend on the inte Peripherals grated peripherals controller in your system Supervisor User Change set or di...

Page 62: ...efaults most stable minimal performance system operations Load Setup Setup defaults are factory settings for Defaults optimal performance system operations Save Exit Save settings in nonvolatile CMOS...

Page 63: ...Chapter 3 Award BIOS Setup 51 Standard CMOS setup When you choose the STANDARD CMOS SETUP option from the INITIAL SETUP SCREEN menu the screen below is displayed...

Page 64: ...the 24 hour military time clock For example 1 p m is 13 00 00 Press the left or right arrow key to move to the desired field Press the PgUp or PgDn key to increment the setting or type the desired val...

Page 65: ...ads write precompensation factor landing zone and number of sectors Drives whose specifications do not accommodate any pre defined type are classified as type USER Size Disk drive capacity approximate...

Page 66: ...in 5 1 4 inch PC type standard drive 360 kilobyte capacity 1 2M 5 25 in 5 1 4 inch AT type high density drive 1 2 megabyte capacity 720K 3 5 in 3 1 2 inch double sided drive 720 kilobyte capacity 1 4...

Page 67: ...2 1 M L N T S D 0 0 6 x 0 0 8 C E N 0 1 3 3 C A 8 4 4 6 L N s t i b 2 1 T F T 0 8 4 x 0 4 6 a b i h s o T A 9 0 2 C 0 1 M T L T F T s t i b 8 1 0 8 4 x 0 4 6 C E N 4 0 6 2 C A 0 6 0 8 L N T F T 0 0 6...

Page 68: ...All But Disk Key POST does not stop for a keyboard or disk error but stops for all other errors Memory You cannot change any values in the Memory fields they are only for your information The fields...

Page 69: ...and their software can use extended memory OtherMemory Between 640 KB and 1 MB often called High memory DOS may load terminate and stay resident TSR programs such as device drivers in this area to fr...

Page 70: ...58 PCM 7890 User Manual BIOS features setup By choosing the BIOS FEATURES SETUP option from the INITIAL SETUP SCREEN menu the screen below is displayed...

Page 71: ...l Cache Cache memory is additional memory that is much faster than conventional DRAM system memory CPUs from 486 type on up contain internal cache memory and most but not all modern PCs have additiona...

Page 72: ...drives with 720 KB 1 2 MB and 1 44 MB capacity all have 80 tracks Because very few modern PCs have 40 track floppy drives we recommend that you set this field to Disabled to save time Boot Up NumLock...

Page 73: ...are not shadowed must be read by the system through the 8 bit X bus Shadowing improves the performance of the system BIOS and similar ROM firmware for expansion peripherals but it also reduces the amo...

Page 74: ...62 PCM 7890 User Manual CHIPSET features setup By choosing the CHIPSET FEATURES SETUP option from the INITIAL SETUP SCREEN menu the screen below is displayed...

Page 75: ...e options not all of the options are described here Auto Configuration Auto Configuration selects predetermined optimal values of chipset parameters When Disabled chipset parameters revert to setup in...

Page 76: ...ay fail to retain data This field applies only if synchronous DRAM is installed in the system SDRAM CAS Latency Time When synchronous DRAM is installed you can control the number of CLKs between when...

Page 77: ...SA bus This delay takes place because the PCI bus is so much faster than the ISA bus These two fields let you add recovery time in bus clock cycles for 16 bit and 8 bit I O Memory Hole at 15M 16M You...

Page 78: ...e extreme values of the pulse generate excess EMI Enabling pulse spectrum spread modulation changes the extreme values from spikes to flat curves thus reducing EMI This benefit may in some cases be ou...

Page 79: ...Chapter 3 Award BIOS Setup 67 Power management setup By choosing the POWER MANAGEMENT option from the INITIAL SETUP SCREEN menu the screen below is displayed...

Page 80: ...aving for Doze Standby and Suspend modes This table describes each power management mode Max Saving Maximum power savings Only Available for SL CPUs Inactivity period is 1 minute in each mode User Def...

Page 81: ...ndards Association VESA Use the software supplied for your video subsystem to select video power management values Blank Screen System only writes blanks to the video buffer Video Off After As the sys...

Page 82: ...s into an idle state after the specified timeout and then waking themselves up when accessed Throttle Duty Cycle When the system enters Doze mode the CPU clock runs only part of the time You may selec...

Page 83: ...onitoring of IRQ8 the Real Time Clock so it does not awaken the system from Suspend mode Reload Global Timer Events When Enabled an event occurring on each device listed below restarts the global time...

Page 84: ...72 PCM 7890 User Manual PNP PCI configuration setup By choosing the PNP PCI CONFIGURATION SETUP option from the initial SETUP SCREEN menu the screen below is displayed...

Page 85: ...tem Configuration Data ESCD when you exit Setup if you have installed a new add on and the system reconfiguration has caused such a serious conflict that the operating system cannot boot IRQ n Assigne...

Page 86: ...pts Assign IRQ for VGA If you are not using your system s VGA controller select Disabled to free the IRQ resource Used Mem base addr Select a base address for the memory area used by any peripheral th...

Page 87: ...The BIOS DEFAULTS provides the most stable settings though they do not provide optimal performance LOAD SETUP DEFAULTS on the other hand provides for maximum system performance If the stored record c...

Page 88: ...76 PCM 7890 User Manual Integrated peripherals setup By choosing the INTEGRATD PERIPHERALS option from the initial SETUP SCREEN menu the screen below is displayed...

Page 89: ...A data transfer protocol that utilizes ATA commands and the ATA bus to allow DMA commands to transfer data at a maximum burst rate of 33 MB s When you select Auto in the four IDE UDMA fields for each...

Page 90: ...select Disabled in this field Onboard Serial Ports 1 2 Select a logical COM port address for the first and second serial ports RxD TxD Active Consult your IR peripheral documentation to select the cor...

Page 91: ...t either SUPERVISOR or USER PASSWORD or both of them The difference between the two is that the supervisor password allows unrestricted access to enter and change the options of the setup menus while...

Page 92: ...the message changes CONFIRM PASSWORD Again type the password and press Enter To abort the process at any time press Esc In the Security Option item in the BIOS Features Setup screen select System or S...

Page 93: ...tion The IDE HDD AUTO DETECTION utility can automatically detect the IDE hard disk installed in your system You can use it to self detect and or correct the hard disk type configuration You need to re...

Page 94: ...ss ENTER the values entered in the setup utility will be recorded in the chipset s CMOS memory The microprocessor will check this every time you turn your system on and compare this to what it finds a...

Page 95: ...Chapter 4 Driver Installation 83 4 Flat Panel CRT Controller Display Drivers and Utilities This chapter provides information about Driver types and installation C H A P T E R...

Page 96: ...require any special drivers to operate in standard modes The purpose of the enclosed software drivers is to take advantage of the extended features of the CHIPS VGA Flat Panel CRT controller Hardware...

Page 97: ...e hard disk Understand the MS DOS directory structure If you are uncertain about any of these concepts please refer to the DOS or OS 2 user reference guides for more information before you proceed wit...

Page 98: ...these drivers through the Windows operating system Driver installation 1 Install Windows 95 as you normally would for a VGA display Click the Start button go to Settings and click on Control Panel Ch...

Page 99: ...Chapter 4 Driver Installation 87 Click the setting buttom then click the Advanced Properties icon into the Advanced Display properties windows show as figure2 figure 2...

Page 100: ...Manual click on Change Display Type In the Change Display Type window click on the Change button under Adapter Type into the select Device window show as figure 3 This will bring up the Select Device...

Page 101: ...elect Device window click on Have Disk Select Browse and find the Win95 driver chips95 inf in the Supporting CD ROM cd rom CD ROM model name driver vga driver win95 chips95 inf and then click OK cd ro...

Page 102: ...90 PCM 5896 User Manual The name of the Chips And Tech 69000 PCI driver will appear highlighted in the Models list boxfhow as figure Click OK to start the driver installation show as figure 5 figure 5...

Page 103: ...Chapter 4 Driver Installation 91 3 Once the installation is complete the Advanced display Properties window will reappear Show as figure 6 figure 6...

Page 104: ...92 PCM 5896 User Manual Click on close to close the window Then the Display Properties window will reappear Show as figure 7 figure 7...

Page 105: ...Chapter 4 Driver Installation 93 Click on Apply Restart the system for the new settings to take effect show as figure 8 figure 8...

Page 106: ...from the pull down menu choose Run At the Command Line prompt type cd rom CD ROM model name driver vga driver win31 setup exe Press the ENTER key or click OK to begin the installation cd rom the drive...

Page 107: ...completed you will need to perform a shutdown and then restart the system in order for changes to take effect A log of the information output during the install can be found in root OS2 INSTALL DISPL...

Page 108: ...6 User Manual 6 When the installation is complete you will need to shut down and then restart the system for the changes to take effect Make sure to remove the installation diskette before restarting...

Page 109: ...n click the Display Type buttom into the Display Type windows then click on Change buttom from the Adapter Type icon And click on Have Disk buttom in the change display window 2 Place the Supporting C...

Page 110: ...ROM dirve In the Select Device window click on Have Disk select Browse and find the NT 4 0 driver from cd rom CD ROM model name dirver vga driver win98 nt windows nt nt40 Oemsetup inf cd rom the driv...

Page 111: ...Chapter 5 Software Configuration 99 5 Ethernet Software Configuration This chapter describes how to configure the Etherent Card to match your applica tion requirements C H A P T E R...

Page 112: ...the Ethernet interface Just highlight the option you wish to change by using the Up and DOWN keys To change a selected item press ENTER and a screen will appear with the available options Highlight yo...

Page 113: ...uration 101 6 Audio Setup This PCM 7890 is equipped with an audio interface that records and playback CD quality audio This chapter provides instructions for installing the software drivers on the inc...

Page 114: ...rd audio interface also supports the Plug and Play PnP standard and provides PnP configuration for the audio FM and MPU 401 logical devices It is compatible with Sound Blaster Sound Blaster Pro versio...

Page 115: ...ick on OK The system will copy the necessary driver files to your hard disk drive cd rom CD ROM model name dirver sound audio English win95drv cd rom the driver letter of your CD ROM drive model name...

Page 116: ...following new hardware components Creative Gameport Joystick SB Audio PCI 64V Legacy Device Sound Blaster AudioPCI 64V 5 Upon initial installation the setup process begins setting up the software 6 W...

Page 117: ...1 Excute the installation wizard named CTRUN EXE in the follow ing directory cd rom CD ROM model name dirver Audio Ctrun cd rom the drive letter of your CD ROM drive model name the model number of you...

Page 118: ...106 PCM 7890 User Manual...

Page 119: ...hdog Timer The mainboard is equipped with a watchdog timer that resets the CPU or generates an interrupt if processing comes to a standstill for whatever reason This feature ensures system reliability...

Page 120: ...set Winbond W83977 If you want to use it you have to know how to read write the configuration register of W83977 The basic proce dure is as follows 1 Enter configuration mode 2 Select Logical Device 3...

Page 121: ...2h of logical deivice 8 Logical Device 7 Register number 30h CR30 00h timer inactive 01h timer active Logicel Device 8 Register number F2h CRF2 00h Time out Disable 01h Time out occurs after 32 second...

Page 122: ...G_PORT dw 3f0h DATA_PORT dw 3f1h SetWatchDog_Time PROC push bx push cx push dx mov bl 7 Select logical device number 7 mov ax 0130h write 01h to register 30h to activate timer call W977Write movbl 8 S...

Page 123: ...7h Specific value to enter Config Mode mov dx cs CONFIG_PORT out dx al Write to Config Port twice out dx al jmp 2 Delay jmp 2 pop dx pop ax ret EnterConfig endp Exit to I O Chip Program Configuration...

Page 124: ...lectDevice proc push ax push dx mov al 07h Select control register 7 mov dx cs CONFIG_PORT out dx al Write to Config Port jmp 2 mov al bl Write logical device number mov dx cs DATA_PORT to Data Port o...

Page 125: ...WritePROC push dx call EnterConfig Enter Config Mode call SelectDevice Select logical device mov dx cs CONFIG_PORT out dx al Select register number mov al ah mov dx cs DATA_PORT out dx al call ExitCon...

Page 126: ...114 PCM 7890 User Manual...

Page 127: ...Appendix B Installing PC 104 Modules 115 B Installing PC 104 Modules This appendix provides instructions for installing PC 104 modules A P P E N D I X...

Page 128: ...channel DIO Module PCM 3910 Breadboard Module PCM 3810 Solid State Disk Module Installing these modules on the PCM 7890 is a quick and simple operation The following steps show how to mount the PC 104...

Page 129: ...lling PC 104 Modules 117 PC 104 Module Mounting Diagram PC 104 Mounting Support Female Male PC 104 Module Main board 0 200 0 0 0 200 3 350 3 550 0 200 3 575 3 250 0 300 3 775 3 575 PC 104 module dimen...

Page 130: ...118 PCM 7890 User Manual...

Page 131: ...Appendix C Optional Extras 119 C Optional Extras A P P E N D I X...

Page 132: ...C D I e l a m e f m m 4 5 2 n i p 0 4 0 0 7 0 4 3 1 0 7 1 d n a 5 3 y p p o l f l a u D P 4 3 5 2 5 y p p o l f l a u d n i p 4 3 1 0 3 0 6 2 1 0 7 1 t r o p l e l l a r a P B U S D e l a m e f n i p...

Page 133: ...Appendix C Optional Extras 121 Optional USB Cable Optional USB Cable part no 1709080150...

Page 134: ...122 PCM 7890 User Manual...

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