Intel MB820 User's Manual
Contents
1. Signal Name Ground Ground 12V 12V DIMM1 DIMM2 DDR Channel A Connectors DIMM and DIMM 72 are the first DDR channel connectors that must be use together at one time in order for the system to function properly DIMM3 DIMM4 DDR Channel Connectors DIMMG and DIMMA are the second DDR channel connectors that must be use together at one time in order for the system to function properly AGP1 AGP Slot PCI2 PCI Slots SL1 SL2 ISA Slots IEEE MB820 User s Manual 13 INSTALLATIONS CN1 PS 2 Keyboard and PS 2 Mouse Connectors Signal Name Keyboard PS 2 Mouse PS 2 Keyboard Signal Name Keyboard data Mouse data N C N C GND GND 5V 5V Keyboard clock Mouse clock N C CN2 4 port USB Connector N C CN2 is a USB connector consisting of four ports stacked vertically CN3 J3 Serial Ports CN3 COMI is a DB 9 connector while J3 15 a COM2 pin header Signal Name Ground USB USB connector 2 is optionally available as DB 9 connector CN5 Signal Name Pin 10 not used 2 DCD Data carrier detect DSR Data set ready RXD Receive data RTS Request to send TXD Transmit data CTS Clear to2. essere Page RS232 422 485 COMO Selection eene 8 JP2 COMI RS232 5V 12V Power Setting eee 8 JP3 COM2 RS232 5V 12V Power Setting 8 JP4 Clear CMOS Contents nene eec die RE een 9 JP5 RS232 5V 12V Power Setting 9 JP6 RS232 5V 12V Power Setting 9 JP7 DiskOnChip Address Select eene 10 JP8 Onboard VGA Enable Disable 10 ee MB820 User s Manual 7 INSTALLATIONS JP1 RS232 422 485 2 Selection COMI is fixed for RS 232 use only 13 is selectable for RS232 RS 422 and RS 485 The following table describes the jumper settings for 2 selection 246 8 10 1214 16 18 DD 0 1 3 5 7911 13 15 17 2 Function RS 485 Jumper Setting pin closed Short 5 6 7 9 8 10 13 15 14 16 JP2 COM1 RS232 5V 12V Power Setting Setting Function Pin 1 2 Short Closed Pin 3 4 Short Closed Pin 5 6 Short Closed 12V Normal 5V JP3 COM2 RS232 5V 12V Power Setting Setting Function Pin 1 2 Short Closed Pin 3 4 Short Closed Pin 5 6 Short Closed 12V Normal 5V 8 MB820 User s Manual INSTALLATIONS JP4 Clear CMOS Contents Use 4 a 3 pin header to clear
3. Power Supply Connector 13 ATXP2 ATX 12V Power 13 DIMMI DIMM2 DDR Channel A Connectors 13 DIMM3 DIMM4 DDR Channel B Connectors 13 AGPICAGP SIOt inasre ert TES 13 PCD PCI3 PCI 5105 13 SEL SLZ SA zio ir EE ROI ERES TES 13 PS 2 Keyboard PS 2 Mouse Connectors 14 CN2 4 port USB Connector eee 14 CN3 J3 Serial Ports sse 14 4 Parallel Port Connector sss 15 CN6 CRT Connectors see 15 CN7 USB and LAN RJ45 16 CNB Audio Connector sss sss 16 Connector esses nnne nnne 16 J4 CD In Audio sss 16 15 16 Serial ATA SATA 17 J8 COM3 and Serial Ports Connector 17 J9 Wake On LAN Connector sese 17 Digital Connector 4 in 4 18 J12 System Function Connector eee 18 FANI CPU Fan Power Connector eese 20 FAN2 VGA Fan Power 2 20 FAN23 Chassis Fan Power 20 FDD1 Floppy Drive Connector
4. switch Signal Name 10 Power LED 0000000000 No connect O co Ground 11 20 No connect Ground SMI Hardware Switch Pins 6 and 16 This connector supports the Green Switch on the control panel which when pressed will force the system into the power saving mode immediately 1 10 Signal Name 5 11 20 Ground ATX Power ON Switch Pins 7 and 17 This 2 pin connector is an Power Supply On Off Switch on the system that connects to the power switch on the case When pressed the power switch will force the system to power on When pressed again it will force the system to power off 1 10 11 20 Reset Switch Pins 9 and 19 The reset switch allows the user to reset the system without turning the main power switch off and then on again Orientation is not required when making a connection to this header 1 10 D D D DDD 00 11 20 44 MB820 User s Manual 19 INSTALLATIONS Hard Disk Drive LED Connector Pins 10 and 20 This connector connects to the hard drive activity LED on control panel This LED will flash when the HDD is being accessed 1 10 Signal Name HDD Active 5 11 20 FAN1 CPU
5. 48 MB820 User s Manual 27 BIOS SETUP prm BIOS Introduction The Award BIOS Basic Input Output System installed in your computer system s ROM supports Intel Pentium 4 processors The BIOS provides critical low level support for a standard device such as disk drives serial ports and parallel ports It also adds virus and password protection as well as special support for detailed fine tuning of the chipset controlling the entire system BIOS Setup The Award BIOS provides a Setup utility program for specifying the system configurations and settings The BIOS ROM of the system stores the Setup utility When you turn on the computer the Award BIOS is immediately activated Pressing the Del key immediately allows you to enter the Setup utility If you are a little bit late pressing the Del key POST Power On Self Test will continue with its test routines thus preventing you from invoking the Setup If you still wish to enter Setup restart the system by pressing the Reset button or simultaneously pressing the Ctrl Alt and Delete keys You can also restart by turning the system Off and back On again The following message will appear on the screen Press lt DEL gt to Enter Setup In general you press the arrow keys to highlight items Enter to select the lt PgUp gt and lt PgDn gt keys to change entries F1 for help and
6. 12 2003 2 For the lat of supported chipsets plasse reba Io the Notes CONTENTS OF THIS DOCUMENT v 6 The Setup process is now complete Click Finish to restart the computer and for changes to take effect When the computer has restarted the system will be able to find some devices Restart your computer when prompted Install Complete The hel I has cuccesduly hel Fi Opia Sobwale lna adam UR Before pou can the piogiam you most your con put or Yes mari my Gon peter noo No yall estat mp con poles Remove aw dicks from thet dives and then click Fieish to compie soup 52 MB820 User s Manual DRIVERS INSTALLATION Realtek AC97 Codec Audio Driver Installation Follow the steps below to install the Realtek AC97 Codec Audio Drivers 1 Insert the CD that comes with the motherboard and the screen below would appear Click Intel R Chipsets then Intel R 875P Chipset Family Drivers Click Realtek AC97 Codec Audio Drivers to start installation Wizard Complete Setup hec nished copying the SigmaTel Audo Divers Hez lo compde you can use the Sigma el ACS Audio Drwets you must Windows pour wiliedtaf mp computer later Remove aw dicks from ther dives and then click Fineh to complete setup MB820 User s Manual 53 DRI
7. Host IOR Ground IOCHRDY Host ALE DACKO Ground IRQI4 No connect Address 1 No connect Address 0 Address 2 Chip select 0 Chip select 1 Activit Signal Name Ground Signal Name Reset IDE Ground Host data 7 Host data 8 59 o IDE2 22 Host data 6 Host data 9 Host data 5 Host data 10 Host data 4 Host data 11 Host data 3 Host data 12 Host data 2 Host data 13 Host data 1 Host data 14 Host data 0 Host data 15 Ground Protect pin DRO Ground Host IOW Ground Host IOR Ground IOCHRDY Host ALE DACKI Ground IRQIS No connect Address 1 No connect Address Address 2 Chip select 0 Chip select 1 Activit MB820 User s Manual Ground INSTALLATIONS Watchdog Timer Configuration The WDT is used to generate a variety of output signals after a user programmable count The WDT is suitable for use in the prevention of system lock up such as when software becomes trapped in a deadlock Under these sort of circumstances the timer will count to zero and the selected outputs will be driven Under normal circumstance the user will restart the WDT at regular intervals before the timer counts to zero SAMPLE CODE
8. Power Installation The system power is provided to the motherboard with the and ATXP2 ATX power connectors ATXP2 is a 4 pin 12V power connector is to be connected to a standard power connector Installing the Memory The MB820 motherboard supports four DDR memory sockets for a maximum total memory of 4GB in DDR memory type You can install unbuffered amp ECC DDR DIMMs It supports DDR266 when installed with CPUs that have clock speeds of 400MHz It supports DDR266 333 when installed with CPUs that have clock speeds of 533MHz It supports DDR266 320 400 when installed with CPUs that have clock speeds of 800MHz The board provides dual channel functionality for its DIMM slots DIMM1 2is for one channel and DIMM34 is for another channel Enabling dual channels can increase data access rates by putting two similar size DDR modules into two same color DIMM slots Basically the system memory interface has the following features Supports two 64 bit wide DDR data channels Available bandwidth up to 3 2GB s DDR400 for single channel mode and 6 4GB s DDR400 in dual channel mode Supports ECC DIMMs Supports 128Mb 256Mb 512 1Gb DDR technologies Supports only x8 x16 DDR devices with four banks Registered DIMMs not supported Supports opportunistic refresh Up to 16 simultaneously open pages four per row four rows maximum MB820 User s Manual 5 INSTALLATIONS Setting the J
9. 820 Socket 478 Pentium 4 Intel 875P Chipset Industrial Motherboard USER S MANUAL Version 1 0 Acknowledgments Award is a registered trademark of Award Software International Inc PS 2 is a trademark of International Business Machines Corporation Intel and Pentium 4 are registered trademarks of Intel Corporation Microsoft Windows is a registered trademark of Microsoft Corporation Winbond is a registered trademark of Winbond Electronics Corporation All other product names or trademarks are properties of their respective owners ii MB820 User s Manual Table of Contents Introduction 2 2 22222 1 Ju II 1 Product Description 2 Board 1015 sss ss ssc sees 3 5 1 4 Power 5 Installing the 5 Setting the trente ee tte eee eee tenant 6 Connectors 820 11 Watchdog Timer Configuration eee 23 BIOS Setup eii tt ans 27 Drivers Installation 49 Intel 875P Chipset Software Intallation Utility 50 Realtek AC97 Codec Audio Driver Installation 53 Intel PRO LAN Drivers Installation 54 VGA Drivers Installation eee 55 MB820 User s Manual iii This
10. Esc to quit When you enter the Setup utility the Main Menu screen will appear on the screen The Main Menu allows you to select from various setup functions and exit choices eee 28 MB820 User s Manual BIOS SETUP Phoenix AwardBIOS CMOS Setup Utility Standard CMOS Features Advanced BIOS Features Advanced Chipset Features Integrated Peripherals Power Management Setup PnP PCI Configurations PC Health Status Frequency Voltage Control Load Fail Safe Defaults Load Optimized Defaults Set Supervisor Password Set User Password Save amp Exit Setup Exit Without Saving ESC Quit F10 Save amp Exit Setup V gt Select Item Time Date Hard Disk Type The section below the setup items of the Main Menu displays the control keys for this menu At the bottom of the Main Menu just below the control keys section there is another section which displays information on the currently highlighted item in the list Note If the system cannot boot after making and saving system changes with Setup the Award BIOS supports an override to the CMOS settings that resets your system to its default Warning It is strongly recommended that you avoid making any changes to the chipset defaults These defaults have been carefully chosen by both Award and your system manufacturer to provide the absolute maximum performance and reliability Changing the defaults could cause the system to become unstable a
11. eere 21 IDE IDE2 Primary and Secondary IDE Connectors 22 eet MB820 User s Manual 11 INSTALLATIONS Connector Locations on MB820 Ez O B D ENG 7 H au 9 Bo Intel 5 da J4 zou S 2 D m m 82875P 19 H SEM E RON ONT 2104 WB83628F H3ZC9EBM ES pm DINM2 J5 L DINMS LDINM4 pa SECONDARY a FWH3 555959090 6592513960 lines Ame IZ EE MA DAA aall 3522295252925259 JP4 Led L 12 MB820 User s Manual INSTALLATIONS 1 Power Supply Connector ATXPI is a 20 pin power supply connector Refer to the following table for the pin out assignments 11 Signal Name Signal Name o D 3 3V 1 3 3V 12 2 3 3 5 Ground 3 Ground o PS ON 4 5V o Ground 5 Ground Ground 6 45V Ground 7 Ground 8 Power good a 9 5VSB SES 10 12V
12. BIOS SETUP Integrated Peripherals This section sets configurations for your hard disk and other integrated peripherals The first screen shows three main items for user to select Once an item selected a submenu appears Details follow Phoenix AwardBIOS CMOS Setup Utility Integrated Peripherals On Chip Primary IDE Device Press Enter ITEM HELP Onboard Device Press Enter Menu Level SuperlO Device Press Enter Phoenix AwardBIOS CMOS Setup Utility OnChip IDE Device DE Block Mode Enabled ITEM HELP DE DMA transfer access Enabled Menu Level On Chip Primary PCI IDE Enabled DE Primary Master PIO Auto If your IDE hard drive supports DE Primary Slave PIO Auto block mode select Enabled for DE Primary Master UDMA Auto automatic detection of the DE Pinay UDA AUD S On Chip Secondary PCI IDE Enabled erak Smt E DE Secondary Master PIO Auto DE Secondary Slave PIO Auto DE Secondary Master UDMA Auto DE Secondary Slave UDMA Auto On Chip Serial ATA Setting SATA Mode IDE On Chip Serial ATA Auto Serial ATA Porto Mode SATAO master Serial ATA Porti Mode SATA1 master Phoenix AwardBIOS CMOS Setup Utility Onboard Device USB Controller Enabled ITEM HELP USB 2 0 Controller Disabled Menu Level USB Keyboard Support Disabled USB Mouse Support Disabled AC97 Audio Auto LAN Controller Enabled 38 MB820 User s Manual BIOS SETUP Phoenix AwardBIOS CMOS Setup Util
13. Day Sun to Sat Month 1 to 12 Date 11031 1994 to 2079 To set the date highlight the Date field and use the PageUp PageDown or keys to set the current time 30 MB820 User s Manual BIOS SETUP EIL M n M Time time formatis Hour 00 to 23 Minute 00 to 59 Second 00 to 59 To set the time highlight the Time field and use the lt PgUp gt lt PgDn gt or keys to set the current time IDE Primary HDDs IDE Secondary HDDs The onboard PCI IDE connectors provide Primary and Secondary channels for connecting up to four IDE hard disks or other IDE devices Each channel can support up to two hard disks the first is the Master and the second is the Slave Press Enter to configure the hard disk The selections include Auto Manual and None Select Manual to define the drive information manually You will be asked to enter the following items CYLS Number of cylinders HEAD Number of read write heads PRECOMP Write precompensation LANDZ Landing zone SECTOR Number of sectors The Access Mode selections are as follows Auto Normal HD 528MB Large for MS DOS only LBA HD gt 528MB and supports Logical Block Addressing Remarks The main board supports two serial ATA ports and are represented in this setting as IDE Channel 2 3 Master
14. Drive A Drive B These fields identify the types of floppy disk drive A or drive B that has been installed in the computer The available specifications are 360KB 12 720KB 1 44MB 2 88MB 5 25 5 25in 3 5in 3 5 3 5 IEEE MB820 User s Manual 31 BIOS SETUP me E Video This field selects the type of video display card installed in your system You can choose the following video display cards EGA VGA For EGA VGA SEGA SVGA or PGA monitor adapters default CGA 40 Power up in 40 column mode CGA 80 Power up in 80 column mode MONO For Hercules or MDA adapters Halt On This field determines whether or not the system will halt if an error is detected during power up No errors The system boot will not be halted for any error that may be detected errors Whenever the BIOS detects a non fatal error the system will stop and you will be prompted All But Keyboard The system boot will not be halted for a keyboard error it will stop for all other errors All But Diskette The system boot will not be halted for a disk error it will stop for all other errors All But Disk Key The system boot will not be halted for a key board or disk error it will stop for all others L 32 MB820 User s Manual BIOS SETUP A OOOAALBSHEOIEO CI pR Bv LXLS L1SSEZ QESEEUESBGL AAS OLG Advanced BIOS Features This section allows you to configure and improve your system and allows you to set up some system features
15. Unlock Chip Endp Name Write Reg IN CL register index AL Value to write OUT None Write Reg Proc Near push mov dx 2Eh mov al cl out dx al pop ax inc dx out dx al ret Write Reg seas MB820 User s Manual 25 INSTALLATIONS mcos c M1 Name Read Reg IN CL register index OUT AL Value to read Read Reg Proc Near mov al cl mov dx 2Eh out dx al inc dx in al dx ret Read Reg Endp ee 26 MB820 User s Manual BIOS SETUP BIOS Setup This chapter describes the different settings available in the Award BIOS that comes with the motherboard The topics covered in this chapter are as follows BIOS Introduction essent tenen 28 BIOS ntt UEM REPRE 28 Standard CMOS Setup 30 Advanced BIOS Features 33 Advanced Chipset Features sete 36 Integrated Peripherals eerte 38 Power Management 42 PNP PCI 8 22 0 20 00000 45 PC Health nene uie rent 46 Frequency Voltage Control sete 47 Load Fail Safe Defaults sese 48 Load Setup 2410 442 120 2022 02 08 08 8000004400000000004000 48 Set Supervisor User Password sse 48 Save amp Exit Setup cap eels Reed 48 Exit Without
16. This code and information is provided as is without warranty of any kind either expressed or implied including but not limited to the implied warranties of merchantability and or fitness for a particular purpose Name Enable And Set Watchdog IN AL 1sec 255sec OUT None Enable And Set Watchdog Proc Near push save time interval call Unlock Chip mov cl 2Bh call Read Reg and al NOT 10h call Write Reg set GP24 as WDTO mov cl 07h mov al 08h call Write Reg switch to LDS MB820 User s Manual 23 INSTALLATIONS mov cl OF5h call Read Reg and al NOT 08h call Write Reg set count mode as second pop ax mov cl OF6h call Write Reg set watchdog timer mov al Olh mov cl 30h call Write_Reg watchdog enabled call Lock Chip ret Enable And Set Watchdog Name Disable Watchdog IN None OUT None Disable Watchdog Proc Near call Unlock Chip mov cl 07h mov al 08h call Write Reg switch to LDS xor al al mov cl OF6h call Write Reg clear watchdog timer xor al al mov cl 30h call Write Reg watchdog disabled call Lock Chip ret Disable Watchdog Endp 24 MB820 User s Manual INSTALLATIONS Name Unlock Chip IN None OUT None s Jee Unlock_Chip Proc Near mov dx 2Eh mov al 87h out dx al out dx al ret Unlock Chip Name Lock Chip IN None OUT None SJ eme Unlock Chip Proc Near mov dx 2Eh mov al OAAh out dx al ret
17. C0000h F7FFFh resulting in better video performance However if any program writes to this memory area a system error may result Memory Hole At 15M 16M In order to improve performance certain space in memory can be reserved for ISA cards This memory must be mapped into the memory space below 16 MB The choices are Enabled and Disabled Delay Prior to Thermal This field activates the CPU thermal function after the systems boots for the set number of minutes The options are 6Min and 64Min AGP Aperture Size The field sets aperture size of the graphics The aperture is a portion of the PCI memory address range dedicated for graphics memory address space Host cycles that hit the aperture range are forwarded to the AGP without any translation The default setting is 128M Init Display First This field allows the system to initialize first the VGA on chip or the display card on the PCI Slot DRAM Data Integrity Mode This BIOS feature controls the ECC feature of the memory controller ECC which stands for Error Checking and Correction enables the memory controller to detect and correct single bit soft memory errors The memory controller will also be able to detect double bit errors although it will not be able to correct them This provides increased data integrity and system stability However this feature can only be enabled if you are using special ECC memory modules 5 4 MB820 User s Manual 37
18. O throughput to 33Mb sec with the Ultra DMA 33 feature The options are Auto and Disabled 4 0 MB820 User s Manual 39 BIOS SETUP The default setting of Auto allows the Serial ATA drive to be enabled when the system detects one USB Controller The options for this field are Enabled and Disabled By default this field is set to Enabled USB 2 0 Controller The options for this field are Enabled and Disabled By default this field is set to Disabled In order to use USB 2 0 necessary OS drivers must be installed first USB Keyboard Support The options for this field are Enabled and Disabled By default this field is set to Disabled USB Mouse Support The options for this field are Enabled and Disabled By default this field is set to Disabled 97 Audio The default setting of the AC97 Audio is Auto LAN Controller default setting of the LAN controller is Enabled Onboard FDC Controller Select Enabled if your system has a floppy disk controller FDC installed on the motherboard and you wish to use it If you install an add in FDC or the system has no floppy drive select Disabled in this field This option allows you to select the onboard FDD port Onboard Serial Parallel Port These fields allow you to select the onboard serial and parallel ports and their addresses The default values for these ports are Serial Port 1 3F8 IRQ4 Serial Port 2 2F8 IRQ3 Ser
19. Power Interface Power Management This field allows you to select the type of power saving management modes There are four selections for Power Management Min Power Saving Minimum power management Max Power Saving Maximum power management User Define Each of the ranges is from 1 min to Ihr Except for HDD Power Down which ranges from 1 min to 15 min gt 7 42 MB820 User s Manual BIOS SETUP Video Off Method This field defines the Video Off features There are three options V H SYNC Blank Default setting blank the screen and turn off vertical and horizontal scanning DPMS Allows BIOS to control the video display Blank Screen Writes blanks to the video buffer Video Off In Suspend When enabled the video is off in suspend mode The default setting is Yes Suspend Type The default setting for the Suspend Type field is Stop Grant Modem Use IRQ This field sets the IRQ used by the Modem By default the setting is 3 Suspend Mode When enabled and after the set time of system inactivity all devices except the CPU will be shut off HDD Power Down When enabled and after the set time of system inactivity the hard disk drive will be powered down while all other devices remain active Soft Off by PWRBTN This field defines the power off mode when using an ATX power supply The Instant Off mode allows powering off immediately upon pressing the power button In the Delay 4 Sec mode the system pow
20. according to your preference Phoenix AwardBIOS CMOS Setup Utility Advanced BIOS Features Hard Disk Boot Priority Press Enter ITEM HELP CPU L1 and L2 Cache Enabled Menu Level Hyper threading Technology Enabled Quick Power On Self Test Enabled First Boot Device Floppy Select Hard Disk Boot Device Second Boot Device Hard Disk Priority Third Boot Device CD ROM Boot Other Device Enabled Swap Floppy Drive Disabled Boot Up Floppy Seek Disabled Boot Up Numlock Status On Gate A20 Option Fast Typematic Rate Setting Disabled Typematic Rate chars Sec 6 Typematic Delay Msec 250 Security Option Setup APIC Mode Enabled MPS Version Control for OS 1 4 OS Select For DRAM gt 64MB Non OS2 Report No FDD For WIN 95 Yes Small Logo EPA Show Enabled Hard Disk Boot Priority This item allows you to set the priority for hard disk boot When you press enter the selections shows the current hard disks used in your system as well as the Bootable Add in Card that is relevant to other boot sources media such as SCSI cards and LAN cards CPU L1 and L2 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 additional external cache memory When the CPU requests data the system transfers the requested data from the main DRAM into cache memory for even faster access by the CPU These items allow you to
21. close anp progeerm you Click coire with he Setup program WARNING The pogam is prolected by law and s d Uneuthertiged eredu distiburion ol this program cr amy t eu n severe civi wd penales and vil be prosecuted tothe namun kart under m 4 After copying is done restart the computer when prompted for changes to take effect Setup Complete Setup hee copaig Hes to pour computer bang you can Tha program jou mars reta wind 0 complex fes want to restat my compute nori Mo Lol reetart my conmpunes later Remove any disks kom hai desees and than da Freh to complete 56 820 User s Manual
22. enable speed up memory access or disable the cache function By default these items are Enabled Hyper Threading Technology This feature is enabled when your processor supports Hyper Threading Technology Otherwise this field will be hidden Quick Power On Self Test When enabled this field speeds up the Power On Self Test POST after the system is turned on If it is set to Enabled BIOS will skip some items 820 User s Manual 33 BIOS SETUP Brel omnnonnne First Second Third Boot Device These fields determine the drive that the system searches first for an operating system The options available include Floppy LS120 Hard Disk CDROM ZIP100 USB FDD USB CDROM and Disable Boot Other Device These fields allow the system to search for an operating system from other devices other than the ones selected in the First Second Third Boot Device Swap Floppy Drive This item allows you to determine whether or not to enable Swap Floppy Drive When enabled the BIOS swaps floppy drive assignments so that Drive becomes Drive B and Drive B becomes Drive A By default this field is set to Disabled Boot Up Floppy Seek This feature controls whether the BIOS checks for a floppy drive while booting up If it cannot detect one either due to improper configuration or its absence it will flash an error message Boot Up NumLock Status This allows you to activate the NumLock function after you power up the system G
23. for their respective pin assignments TD Pin 1 gt TD Pin e RD Pin 3 RD CPin 6 Signal Name USB USB Ground CNB Audio Connector CNS 15 3 jack audio connector beside in USB RJ45 combo connector Line out Microphone J1 IrDA Connector is used for an optional IrDA connector for wireless communication _ Signal Name 5V IRRX 45V No connect Ir RX C GND Ground Ir TX Signal Name CD Audio Ground Ground CD Audio L 2 ay 16 MB820 User s Manual INSTALLATIONS 45 46 Serial ATA SATA Connectors The SATA connectors support serial ATA 150 Each connector can only use one serial ATA hard disk J6 is port 1 and J5 is port 2 J8 J10 and Serial Ports Connector J8 and J10 are both 10 pin headers as the COM3 and serial port pin headers supporting RS232 Pin Signal Name L D D D D 10 n Pin 10 Not Used O CO i BY 49 Wake LAN Connector 9 is a 3 pin header for the Wake On LAN function on the motherboard The following table shows the pin out assignments of this connector Wake On LAN will function properly only with an ATX power supply with
24. page is intentionally left blank MB820 User s Manual INTRODUCTION Introduction Checklist Your MB820 Pentium 4 motherboard package should include the items listed below The MB820 motherboard e This User s Manual e 1 Backplate 2 IDE Cable e 1 Floppy Cable e 2SATA Cable e 1 Dual Serial Port Cable e containing the following Chipset Drivers e Flash Memory Utility MB820 User s Manual 1 INSTALLATIONS Product Description The MB820 Pentium 4 motherboard incorporates the Intel 875P chipset that can utilize a single PGA478 processor of up to 3 2GHz or higher and supports FSB frequency of 400 533 800Mhz 100Mhz 133Mhz and 200Mhz HCLK respectively The 875P chipset is designed for use with the Pentium 4 processor with 512 KB L2 cache on 0 13 micron process The integrated MCH component provides the CPU interface DDR interface AGP interface Hub Interface and AGP 8X graphics interface Four DDR memory sockets supports DDR 400 333 266 SDRAM DIMM modules of up to 4GB in capacity ECC is also supported The board also comes optional with either integrated 10 100MB LAN support or an Intel 82547GI Gigabit LAN controller Two Serial ATA connectors offer 1 5 Gigabits sec data throughput speed faster than the most advanced parallel ATA Expansion is provided by four PCI slots two ISA slots and one AGP8X interface Other adva
25. the CMOS contents Note that the ATX power connector should be disconnected from the motherboard before clearing CMOS Setting Function Pin 1 2 Short Closed Normal Pin 2 3 Short Closed Clear CMOS JP5 COM3 RS232 5V 12V Power Setting Setting Function Pin 1 2 Short Closed 12V Pin 3 4 Short Closed Normal Pin 5 6 Short Closed 5V JP6 COM4 RS232 5V 12V Power Setting Setting Function Pin 1 2 Short Closed 12V Pin 3 4 Short Closed Normal Pin 5 6 Short Closed 5V MB820 User s Manual INSTALLATIONS JP7 DiskOnChip Address Select Address D0000 D7FFF D8000 DFFFF default JP8 Onboard VGA Enable Disable Use JP8 to enable or disable the onboard VGA controller Setting Onboard VGA Pin 1 2 Short Closed Enabled Pin 2 3 Disabled Short Closed 10 MB820 User s Manual INSTALLATIONS Connectors on 820 The connectors on MB820 allows you to connect external devices such as keyboard floppy disk drives hard disk drives printers etc The following table lists the connectors on MB820 and their respective functions Connector Locations on 820 12
26. 5VSB that has 1A Signal Name 22 5VSB E Ground LAN Wakeup MB820 User s Manual 17 INSTALLATIONS EH J11 Digital Connector 4 in 4 This 12 pin Digital I O connector supports TTL levels and is used to control external devices requiring ON OFF circuitry 97 Signal Signal RE INO 5V OUTO zm IN2 Ground 6 12 IN3 OUTI GROUND 12V OUT2 OUT3 J12 System Function Connector J12 provides connectors for system indicators that provide light indication of the computer activities and switches to change the computer status J12 is a 20 pin header that provides interfaces for the following functions Hard Disk Drive LED 10 15 29 nuu Reset Switch Not Defined El 30 Power On Switch SMI Hardware Switch nu a n alla Power LED ol Jo Speaker as 1 img 11 Speaker Pins 1 4 This connector provides an interface to a speaker for audio tone generation 8 ohm speaker is recommended Signal Name 1 10 es 7 Y Speaker out 02700000000 No connect 11 20 Ground 5V 18 MB820 User s Manual INSTALLATIONS ZLLLQ o uunbo b3 k A amp A amp KkALe Power LED Pins 11 15 The power LED indicates the status of the main power
27. Fan Power Connector Signal Name Ground 12V Rotation detection Signal Name Ground 12V Rotation detection Signal Name Ground 12V Rotation detection 20 MB820 User s Manual INSTALLATIONS FDD1 Floppy Drive Connector Signal Name Signal Name Ground RM LC Ground No connect 12 22 Ground No connect un Ground Index ris Ground Motor enable 0 Ground Drive select 1 nde Ground Drive select 0 e Ground Motor enable 1 D o Ground Direction Ground Step Ground Write data ae Ground Write gate 55o 034 Ground Track 00 FDD1 Ground Write protect Ground Read data Ground Side 1 select Ground Diskette change MB820 User s Manual 21 INSTALLATIONS IDE IDE2 Primary and Secondary IDE Connectors 59 o IDE1 Signal Name Signal Name Reset IDE Ground Host data 7 Host data 8 Host data 6 Host data 9 Host data 5 Host data 10 Host data 4 Host data 11 Host data 3 Host data 12 Host data 2 Host data 13 Host data 1 Host data 14 Host data 0 Host data 15 Ground Protect pin DRQO Ground Host IOW Ground
28. GA cannot work with an MPEG ISA VESA card MB820 User s Manual 45 BIOS SETUP m n PC Health Status This section shows the parameters in determining the PC Health Status These parameters include temperatures fan speeds and voltages Phoenix AwardBIOS CMOS Setup Utility PC Health Status CPU Warning Temperature Disabled ITEM HELP System Temp Menu Level CPU Temp CPU FAN Speed 1 System FAN Speed FAN3 Chassis FAN Speed FAN2 Vcore V 3 3V 5V 12V 12V VBAT 5VSB V Shutdown Temperature Disabled CPU Fan Failure Warning Disabled Sys FAN Failure Warning Disabled Cha FAN Failure Warning Disabled CPU Warning Temperature This field allows the user to set the temperature so that when the temperature is reached the system sounds a warning This function can help prevent damage to the system that is caused by overheating Temperatures Fan Speeds Voltages These fields are the parameters of the hardware monitoring function feature of the motherboard The values are read only values as monitored by the system and show the PC health status Shutdown Temperature This field allows the user to set the temperature by which the system automatically shuts down once the threshold temperature is reached This function can help prevent damage to the system that is caused by overheating CPU System Chassis Fan Failure Warning When enabled this field lets the system sounds an audible warning to the u
29. VERS INSTALLATION Intel PRO LAN Drivers Installation The Intel PRO LAN drivers support both Intel PRO 100 and PRO 1000 drivers Follow the steps below to complete the installation 1 Insert the CD that comes with the motherboard and the screen below would appear Click on LAN Card on the left side to make the LAN drivers selection Click on Intel R PRO LAN Drivers inte R PRO LAN Drivers Realtek RTL8139x LAN Drivers 2 Click Install Software to continue lati PRO Netsark Cachan 3 When prompted click Restart to restart the computer for new settings to take effect 54 MB820 User s Manual DRIVERS INSTALLATION Drivers Installation To install the SMI VGA drivers SMI SM712 follow the steps below to proceed with the installation 1 Insert the CD that comes with the MB820 and the screen below would appear Click VGA Card on the left side 2 On the right side of the screen click on SMI712 VGA Driver MB820 User s Manual 55 DRIVERS INSTALLATION 3 A Welcome screen would then appear Click Next to start copying of files needed for the driver installation Welcome xi Welacme to the Silicon Motion Corel Procrans Setup program Thit progam wall ratal Notion Caneel on your Ite recommended thal you ext all Wirdowe belos manning the Sep program Canos to qui Setup end then
30. ate A20 Option This field allows you to select how Gate A20 is worked Gate A20 is a device used to address memory above 1 MB Typematic Rate Setting When disabled continually holding down a key on your keyboard will generate only one instance When enabled you can set the two typematic controls listed next By default this field is set to Disabled Typematic Rate Chars Sec When the typematic rate is enabled the system registers repeated keystrokes speeds Settings are from 6 to 30 characters per second Typematic Delay Msec When the typematic rate is enabled this item allows you to set the time interval for displaying the first and second characters By default this item is set to 250msec 5 34 MB820 User s Manual BIOS SETUP Security Option This field allows you to limit access to the System and Setup The default value is Setup When you select System the system prompts for the User Password every time you boot up When you select Setup the system always boots up and prompts for the Supervisor Password only when the Setup utility is called up APIC Mode APIC stands for Advanced Programmable Interrupt Controller The default setting is Enabled MPS Version Control for OS This option is specifies the MPS Multiprocessor Specification version for your operating system MPS version 1 4 added extended configuration tables to improve support for multiple PCI bus configurations and improv
31. e future expandability The default setting is 1 4 OS Select for DRAM 64MB This option allows the system to access greater than 64MB of DRAM memory when used with OS 2 that depends on certain BIOS calls to access memory The default setting is Non OS 2 Report No FDD For WIN 95 If you are using Windows 95 98 without a floppy disk drive select Enabled to release IRQ6 This is required to pass Windows 95 98 s SCT test You should also disable the Onboard FDC Controller in the Integrated Peripherals screen when there s no floppy drive in the system If you set this feature to Disabled the BIOS will not report the missing floppy drive to Win95 98 Small Logo EPA Show The EPA logo appears at the right side of the monitor screen when the system is boot up The default setting is Enabled MB820 User s Manual 35 BIOS SETUP RE lznzcnsc S MM 41 Advanced Chipset Features This Setup menu controls the configuration of the chipset Phoenix AwardBIOS CMOS Setup Utility Advanced Chipset Features DRAM Timing Selectable ITEM HELP CAS Latency Time 2 Menu Level Active to Precharge Delay DRAM RAS to CAS Delay DRAM RAS Precharge Memory Frequency For Auto System BIOS Cacheable Enabled Video BIOS Cacheable Enabled Memory Hole at 15M 16M Disabled Delay Prior to Thermal 16 Min AGP Aperture Size MB 128 Init Display First PCI Slot DRAM Data Integrity Mode Non ECC DRAM Timing Selectable This option refers to th
32. e method by which the DRAM timing is selected The default is By SPD CAS Latency Time You can configure CAS latency time in HCLKs as 2 or 2 5 or 3 The system board designer should set the values in this field depending on the DRAM installed Do not change the values in this field unless you change specifications of the installed DRAM or the installed CPU Active to Precharge Delay The default setting for the Active to Precharge Delay is 7 DRAM RAS to CAS Delay This option allows you to insert a delay between the RAS Row Address Strobe and CAS Column Address Strobe signals This delay occurs when the SDRAM is written to read from or refreshed Reducing the delay improves the performance of the SDRAM DRAM RAS Precharge This option sets the number of cycles required for the RAS to accumulate its charge before the SDRAM refreshes The default setting for the Active to Precharge Delay is 3 Ss 36 MB820 User s Manual BIOS SETUP Memory Frequency For This field sets the frequency of the DRAM memory installed The default setting is Auto The other settings are DDR266 DDR333 DDR320 and DDR400 System BIOS Cacheable The setting of Enabled allows caching of the system BIOS ROM at F000h FFFFFh resulting in better system performance However if any program writes to this memory area a system error may result Video BIOS Cacheable The Setting Enabled allows caching of the video BIOS ROM at
33. ers in length and press Enter The system confirms your password by asking you to type it again After setting a password the screen automatically returns to the main screen To disable a password just press the Enter key when you are prompted to enter the password A message will confirm the password to be disabled Once the password is disabled the system will boot and you can enter Setup freely Save amp Exit Setup This option allows you to determine whether or not to accept the modifications If you type you will quit the setup utility and save all changes into the CMOS memory If you type N you will return to Setup utility Exit Without Saving Select this option to exit the Setup utility without saving the changes you have made in this session Typing Y will quit the Setup utility without saving the modifications Typing will return you to Setup utility 8 2 48 MB820 User s Manual DRIVERS INSTALLATION Drivers Installation This section describes the installation procedures for software and drivers under the Windows 98SE Windows ME Windows 2000 and Windows XP The software and drivers are included with the motherboard If you find the items missing please contact the vendor where you made the purchase The contents of this section include the following Intel 875P Chipset Software Intallation UtilityError Realtek AC97 C
34. ers off when the power button is pressed for more than four seconds or enters the suspend mode when pressed for less than 4 seconds CPU THRM Throttling When the system enters Doze mode the CPU clock runs only part of the time You may select the percent of time that the clock runs Wake Up by PCI Cards Enable this field to allow wake up function through a PCI card MM 44440 MB820 User s Manual 43 BIOS SETUP sn Power This field enables or disables the power on of the system through the modem connected to the serial port or LAN Wake Up On LAN Enable this field to allow wake up function through the onboard LAN Resume by Alarm This field enables or disables the resumption of the system operation When enabled the user is allowed to set the Date and Time Reload Global Timer Events The HDD FDD COM LPT Ports and PCI PIRQ are I O events that can prevent the system from entering a power saving mode or can awaken the system from such a mode When an I O device wants to gain the attention of the operating system it signals this by causing an IRQ to occur When the operating system is ready to respond to the request it interrupts itself and performs the service Ss 44 MB820 User s Manual BIOS SETUP PNP PCI Configurations This option configures the PCI bus system PCI bus systems on the system use INT thus all
35. ial Port 3 8 5 Serial Port 4 Disabled Parallel Port 378H IRQ7 8s 40 MB820 User s Manual BIOS SETUP UART Mode Select This field determines the UART 2 mode in your computer The default value is Normal Other options include rDA and ASKIR Parallel Port Mode This field allows you to determine parallel port mode function SPP Standard Printer Port EPP Enhanced Parallel Port ECP Extended Capabilities Port Chip Select Pin This item is used in conjunction with the digital I O function MB820 User s Manual 41 BIOS SETUP grum pornos MY rn Power Management Setup The Power Management Setup allows you to save energy of your system effectively Phoenix AwardBIOS CMOS Setup Utility Power Management Setup ACPI Function Enabled ITEM HELP Power Management User Define Menu Level Video Off Method SYNC Blank Video Off In Suspend Yes Suspend Type Stop Grant Modem Use IRQ 3 Suspend Mode Disabled HDD Power Down Disabled Soft Off by PWR BTTN Instant Off CPU THRM Throttling 50 Wake Up by PCI Card Disabled Power On by Ring Disabled Wake Up on Lan Disabled Resume by Alarm Disabled Date of Month Alarm 0 Time hh mm ss Alarm 0 0 0 Reload Global Timer Events Primary IDE 0 Enabled Primary IDE 1 Enabled Secondary IDE 0 Enabled Secondary IDE 1 Enabled FDD COM LPT Port Enabled PCI PIRQ A D Enabled ACPI Function Enable this function to support ACPI Advance Configuration and
36. installed PCI cards must be set to this value Phoenix AwardBIOS CMOS Setup Utility PnP PCI Configurations PNP OS Install No ITEM HELP Reset Configuration Data Disabled Menu Level Auto ESCD Default is Disabled Resources Controlled By RQ Resources Press Enter DMA Resources Press Enter Select Enabled to reset Extended System Configuration Data ESCD when you PCI VGA Palette Snoop Disabled exit Setup if you have NT Pin 1 Assignment Auto 22 NT Pin 2 Assignment m reconfiguration has NT Pin 3 Assignment Auto caused such a serious NT Pin 4 Assignment Auto conflict that the OS NT Pin 5 Assignment Auto cannot boot NT Pin 6 Assignment Auto NT Pin 7 Assignment Auto NT Pin 8 Assignment Auto PNP OS Install Enable the PNP OS Install option if it is supported by the operating system installed The default value is No Reset Configuration Data This field allows you to determine whether to reset the configuration data or not The default value is Disabled Resources Controlled by This PnP BIOS can configure all of the boot and compatible devices automatically with the use of a use a PnP operating system such as Windows 95 PCI VGA Palette Snoop Some non standard VGA display cards may not show colors properly This field allows you to set whether or not MPEG ISA VESA VGA cards can work with PCI VGA When this field is enabled PCI VGA can work with an MPEG ISA VESA card When this field is disabled a PCI V
37. ity SuperlO Device Onboard FDC Controller Enabled ITEM HELP Onboard Serial Port 1 3F8 IRQ4 Menu Level Onboard Serial Port 2 2F8 IRQ3 UART Mode Select Normal RxD TxD Active Hi Lo IR Transmission Delay Enabled UR2 Duplex Mode Half Use IR Pins IR Rx2Tx2 Onboard Parallel Port 378 IRQ7 Parallel Port Mode SPP EPP Mode Select EPP1 7 ECP Mode Use DMA 3 Onboard Serial Port 3 3E8H Serial Port 3 Use IRQ IRQ5 Onboard Serial Port 4 Disabled Serial Port 4 Use IRQ IRQ10 Chip Select Pin Disabled IDE HDD Block Mode This field allows your hard disk controller to use the fast block mode to transfer data to and from your hard disk drive IDE DMA Transfer Access Allows IDE transfer to be done in DMA mode OnChip Primary Secondary PCI IDE The integrated peripheral controller contains an IDE interface with support for two IDE channels Select Enabled to activate each channel separately IDE Primary Secondary Master Slave PIO These fields allow your system hard disk controller to work faster Rather than have the BIOS issue a series of commands that transfer to or from the disk drive PIO Programmed Input Output allows the BIOS to communicate with the controller and CPU directly The system supports five modes numbered from 0 default to 4 which primarily differ in timing When Auto is selected the BIOS will select the best available mode IDE Primary Secondary Master Slave UDMA These fields allow your system to improve disk I
38. nced features include six USB 2 0 ports IrDA interface PCI to ISA bridge digital I O four serial ports watchdog timer and audio function Dimensions of the board are 12 by 9 5 in an ATX form factor 8s 2 MB820 User s Manual INTRODUCTION Board Dimensions 0 0 25 E o 026 0 75 TETTE 61 086 1 25 16 0 997 5 ps SR S 5 2 ju sc see or Lan 0 4 8 CNT 9 1 5 2 703 5 043 6 5 gs DN 6 852 loz 7 162 DIN I 7 852 lawn 8 162 STR 9 35 9 6 PRIARY UE 9 S Ore 11 25 2 56 820 User s Manual 3 INSTALLATIONS E Installations This section provides information on how to use the jumpers and connectors on the MB820 in order to set up a workable system The topics covered are ATX Power Installation Installing the Memory Setting the Jumpers Connectors on MB820 Watchdog Timer Configuration eee ey 4 MB820 User s Manual INSTALLATIONS
39. nd crash in some Cases MB820 User s Manual 29 BIOS SETUP S M Standard CMOS Setup Standard CMOS Setup choice allows you to record some basic hardware configurations in your computer system and set the system clock and error handling If the motherboard is already installed in a working system you will not need to select this option You will need to run the Standard CMOS option however if you change your system hardware configurations the onboard battery fails or the configuration stored in the CMOS memory was lost or damaged Phoenix AwardBIOS CMOS Setup Utility Standard CMOS Features Date mm dd yy Thu May 21 2001 Item Help Time hh mm ss 00 00 00 Menu Level IDE Channel 0 Master None Change the day month IDE Channel 0 Slave None Year and century IDE Channel 1 Master None IDE Channel 1 Slave None IDE Channel 2 Master None IDE Channel 3 Master None Drive A 1 44M 3 5 in Drive B None Video EGA VGA Halt On All Errors Base Memory 640K Extended Memory 129024K Total Memory 130048K At the bottom of the menu are the control keys for use on this menu If you need any help in each item field you can press the F1 key It will display the relevant information to help you The memory display at the lower right hand side of the menu is read only It will adjust automatically according to the memory changed The following describes each item of this menu Date The date format is
40. odec Audio Driver InstallationError Bookmai Intel PRO LAN Drivers InstallationError Bookmark not def Drivers Installation Error Bookmark not defined IMPORTANT NOTE After installing your Windows operating system Windows 98SE ME 2000 XP you must install first the Intel Chipset Software Installation Utility before proceeding with the drivers installation 250 MB820 User s Manual 49 DRIVERS INSTALLATION Intel 875P Chipset Software Intallation Utility The Intel 875P Chipset Drivers should be installed first before the software drivers to enable Plug amp Play INF support for Intel chipset components Follow the instructions below to complete the installation under Windows 98SE ME 2000 XP 1 Insert the CD that comes with the motherboard and the screen below would appear Click Intel Chipsets and then Intel R 875P Chipset Drivers 815 E Chipset Drivers ntei R 845 E PE Chipset Drivers ri eR 845G GE GL GV Chipset Drivers 865G Chipset Drivers InteR 875P Chipset Drivers nte R E7500 E7501 Chipset Drivers 2 Click Intel R Chipset Software Intallation Utility Chipset Software installation Utility nteiR Application Accelerator RAID Edition Realtek AC 97 Codec Audio Driver Support Iit EO 8752 Chipe 50 MB820 User s Manual DRIVERS INSTALLATION 3 When the Welcome screen appears click Next to continue Welcome
41. send DTR Data terminal ready RI Ring indicator GND ground Not Used 14 MB820 User s Manual INSTALLATIONS CN4 Parallel Port Connector is a DB 25 external connector situated on top of the and serial ports The following table describes the pin out assignments of this connector Signal Name CN4 Parallel Port Signal Name Line printer strobe AutoFeed parallel data 0 Error PD1 parallel data 1 Initialize PD2 parallel data 2 Select PD3 parallel data 3 Ground PDA parallel data 4 Ground PD5 parallel data 5 Ground PD6 parallel data 6 Ground PD7 parallel data 7 Ground ACK acknowledge Ground Busy Ground Paper empty Ground Select CN6 VGA CRT Connector CN6 is a DB 15 VGA connector located beside the COMI port following table shows the pin out assignments of this connector Signal Name N A Signal Name Red Green Blue N C 5 Quee GND GND GND GND N C GND N C N C VSYNC NC i 54 MB820 User s Manual 15 INSTALLATIONS RyNuLLE LURLICGCIGDAL ZGGS UE ELLL LGLbLELLBSie e A4 CN7 USB and LAN RJ45 Connectors CN7 consists of an RJ 45 connector top and two stacked USB ports Refer to the section below
42. ser that the CPU fan or chassis fan has malfunctioned 2 ee 46 MB820 User s Manual BIOS SETUP Frequency Voltage Control This section shows the user how to configure the processor frequency Phoenix AwardBIOS CMOS Setup Utility Frequency Voltage Control Auto Detect DIMM PCI Disabled ITEM HELP Spread Spectrum Disabled Menu Level Auto Detect DIMM PCI This field enables or disables the auto detection of the PCI clock Spread Spectrum This field sets the value of the spread spectrum The default setting is Disabled This field is for CE testing use only MB820 User s Manual 47 BIOS SETUP prc Load Fail Safe Defaults This option allows you to load the troubleshooting default values permanently stored in the BIOS ROM These default settings are non optimal and disable all high performance features Load Setup Defaults This option allows you to load the default values to your system configuration These default settings are optimal and enable all high performance features Set Supervisor User Password These two options set the system password Supervisor Password sets a password that will be used to protect the system and Setup utility User Password sets a password that will be used exclusively on the system To specify a password highlight the type you want and press Enter The Enter Password message prompts on the screen Type the password up to eight charact
43. to the lnd P eld For Irae HI Chipset Soltware lmstallabem Weloore to the Chipset Software UR This uiy vellenebis Plug amp Play INF zuppor fer Intel chi pan componente 4 Click Yes to accept the software license agreement and proceed with the installation process License Aqrenment Pesce reed the Lol ing licence agreement Press the PAGE DOWN to soa the rest of Te aieo SOFTWARE LICENSE AGREEMENT IDEM 7 IHY 7 EY b Sings ssi IMPORTANT READ BEFORE COPTING INSTALLING USING Do rat cr load this arid arr materiak be unti you have cantly read the folowing tems and condo By loading vang the B azn pou ages to the bams ol the Dee merid HE poa do nol mish do ret install uae the Software Plesce Note Do you accept al the terme of the preceding amp geement pou choose No the setup will close To roial Ese 5 Instskistizn Utity pou must accept this 7 lt Back Yes No MB820 User s Manual 51 DRIVERS INSTALLATION 5 On Readme Information screen click Next to continue the installation Readme onmalion E oC A Product Ince Chipset Saa e Installation Rdosse Production Verson Versione 5001012 Tegel Intell 82875 Date
44. umpers Jumpers are used on MB820 to select various settings and features according to your needs and applications Contact your supplier if you have doubts about the best configuration for your needs The following lists the connectors on MB820 and their respective functions Jumper Locations on 820 2 7 JP1 RS232 422 485 COMO 8 JP2 COMI RS232 5V 12V Power Setting 8 JP3 COM2 RS232 5V 12V Power Setting 8 JP4 Clear CMOS Contents eese 9 JP5 COM3 RS232 5V 12V Power Setting 9 JP6 RS232 5V 12V Power Setting 9 JP7 DiskOnChip Address Select sss 10 JP8 Onboard VGA Enable Disable eese 10 8 2 4 6 MB820 User s Manual INSTALLATIONS Jumper Locations on MB820 Intel 8254161 n 82875P Intel 82801ER DINMI c Vd 5 Sl 19 H3ZC9EBM Jumper Locations on MB820
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