American Megatrends MegaDual User Manual
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American Megatrends MegaDual User Manual

American Megatrends MegaDual User Manual

Pentium ii / pentium iii pci motherboard
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MegaDual
®
®
Pentium II
/Pentium III
PCI Motherboard
User's Guide
MAN-798
3/15/00

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Summary of Contents for American Megatrends MegaDual

  • Page 1 MegaDual ® ® Pentium II /Pentium III PCI Motherboard User's Guide MAN-798 3/15/00...
  • Page 2 Limited Warranty Buyer agrees if this product proves to be defective, that American Megatrends, Inc. is obligated only to replace or refund the purchase price of this product at American Megatrend's discretion according to the terms and conditions on the motherboard warranty card. American Megatrends shall not be liable in tort or contract for any loss or damage, direct, incidental or consequential.

  • Page 3: Table Of Contents

    Table of Contents Hardware Installation ... 1 Overview...1 MegaDual PCI Motherboard Layout ...3 Step 1 Unpack the Motherboard ...4 Avoid Static Electricity...4 Step 2 Configure CPU Speed...5 Step 3 Install Additional Voltage Regulator...6 Step 4 Connect CPU Fans...7 Step 5 Install CPU...8 Step 6 Install Memory...9...
  • Page 4 This manual was written for the OEM to assist in the proper installation and operation of this motherboard. This manual describes the specifications and features of the MegaDual PCI motherboard. It explains how to assemble a system based on the MegaDual PCI motherboard and how to use the AMIBIOS that is specifically designed for this motherboard.

  • Page 5: Technical Support

    AMI or you purchased an AMI product from an unauthorized reseller, If an American Megatrends motherboard fails to operate as described or you are in doubt about a configuration option, please call technical support at 770-246-8600. Web Site We invite you to access the American Megatrends world wide web site at: http://www.ami.com.

  • Page 6: Packing List

    Please refer to the ASM manual for information on how to use this program. one termination card two VRM modules two retention mechanisms for the Pentium II/Pentium III CPUs Warranty Card the American Megatrends MegaDual Pentium II / Pentium III PCI Motherboard User's Guide MegaDual PCI Motherboard User’s Guide...

  • Page 7: Hardware Installation

    Hardware Installation Overview The American Megatrends MegaDual Pentium II/III features include: support for two Intel Pentium II/Pentium III CPUs support for all Pentium II/Pentium III frequencies up to 4 GB of onboard ECC SDRAM system memory system memory parity checking or ECC (Error Checking and Correction)
  • Page 8 40-pin IDE connectors for 1 – 4 IDE drives a 34-pin floppy drive connector two serial port connectors a 25-pin parallel port connector a keyboard and PS/2 mouse dual mini two 4-pin USB ports on dual combo onboard 82559 10/100 Mb LAN MegaDual PCI Motherboard User’s Guide...

  • Page 9: Megadual Pci Motherboard Layout

    MegaDual PCI Motherboard Layout Chapter 1 Hardware Installation...

  • Page 10: Step 1 Unpack The Motherboard

    Make sure you stand on an anti-static mat when handling the motherboard. Avoid contact with any component or connector on any adapter card, printed circuit board, or memory module. Handle these components by the mounting bracket. MegaDual PCI Motherboard User’s Guide Action...

  • Page 11: Step 2 Configure Cpu Speed

    CPU speed is controlled by the BIOS setup. See the description in the Chapter 2 AMIBIOS setup for more information. Please contact American Megatrends technical support at 770-246-8600 to support a CPU running at other speeds. Both CPU slots must be fully populated at all times. If you use only one CPU, install the termination card in the second CPU location.

  • Page 12: Step 3 Install Additional Voltage Regulator

    Each installed CPU requires its own VRM. Even if you use only one CPU, you can install both VRMs on the motherboard. Do not power up the MegaDual board if there is a CPU installed without a corresponding VRM. MegaDual PCI Motherboard User’s Guide...

  • Page 13: Step 4 Connect Cpu Fans

    Step 4 Connect CPU Fans JP13 and JP14 (shown below) are 3-pin bergs that connect the fan on the CPU heat sink to the motherboard power. JP13 is the CPU0 fan connector for the CPU in location U13. JP14 is the CPU1 fan connector for the CPU in location U15. All Pentium II/Pentium III CPUs are shipped with a heat sink, and a CPU fan.

  • Page 14: Step 5 Install Cpu

    CPU. Follow all antistatic procedures described on page 4. Termination Card The MegaDual motherboard is shipped with a termination card that should be installed in the empty CPU slot if only one CPU is installed.

  • Page 15: Step 6 Install Memory

    Each bank contains two sockets. Bank0 contains DIMM sockets U17 and U19. Bank1 contains U18 and U20. The minimum amount of system memory supported by the MegaDual PCI is 16 MB. Each socket can hold one DIMM. You can use:...
  • Page 16 DIMM into the socket at an angle, then push it up. When properly inserted, the DIMM clicks into place as the latching pins engage. The DIMM installation process is shown below: MegaDual PCI Motherboard User’s Guide...

  • Page 17: Step 7 Install The Motherboard

    Step 7 Install the Motherboard Step Place the chassis on an anti-static mat. Connect the chassis to ground to avoid static damage during installation. Connect an alligator clip with a wire lead to any unpainted part of the chassis. Ground the other end of the lead at the same point as the mat and the wristband.

  • Page 18: Step 8 Attach Cables

    Step 8 Attach Cables Connectors The MegaDual PCI motherboard includes many connectors. Connection instructions, illustrations of connectors, and pinouts are supplied in the following pages. A list of all connectors follows: CPU0 fan JP13 CPU1 fan JP14 External battery connector JP4...
  • Page 19 Step 8 Attach Cables, Continued Cable Connector Ends When connecting chassis connectors to the motherboard, make sure to connect the correct connector end. Most connector wires are color-coded. Match the color of the wires leaving the switch or LED to the same pin on the connector end. There may be more than one connector with the same color-coded wires.
  • Page 20 ATX power supply. The power connector pinout is: Description +3.3V -12V Ground PSON Ground Ground Ground MegaDual PCI Motherboard User’s Guide Description +3.3V +3.3V Ground +5V (VCC) Ground +5V (VCC) Ground POWER GOOD...
  • Page 21 Step 8 Attach Cables, Continued JP3 Drain CMOS RAM Power JP3 is a 3-pin berg that can be used to erase the contents of CMOS RAM, where all system configuration information is stored. Before you change JP3 from the default setting (1-2), turn off the power supply using the mechanical switch (not the soft-off power button.) This switch is normally located on the power supply.
  • Page 22 Pin 2 are shorted when the chassis door is closed and open when the chassis door is opened. JP17 SCSI LED JP17 is a 2-pin single inline berg that indicates whether the SCSI is active. MegaDual PCI Motherboard User’s Guide Assignments Keyboard data...
  • Page 23 JP16 Clock Spread Enable JP16 is a 2-pin single inline berg that is normally open. JP16 should be used only to reduce emissions. When JP16 is shorted, the main clock chip on MegaDual spreads the clock spectrum to reduce emissions.
  • Page 24 JP1 Safe Mode Boot Option JP1 is a 2-pin single inline berg. MegaDual uses AMIBIOS setup to control CPU speed. If the CPU speed is set too high (above the CPU stamped speed), the system might not boot. If the system does not boot,...

  • Page 25: Step 9 Connect I/O

    AMIBIOS minimizes conflicts between onboard and offboard I/O devices. AMIBIOS automatically checks the adapter cards installed in the expansion slots on the MegaDual PCI motherboard for a hard disk or floppy controller and serial or parallel ports. Chapter 1 Hardware Installation...
  • Page 26 All parallel port settings must be correctly configured through the Advanced menu (Port Configuration subscreen) in AMIBIOS Setup. Description STROBE# BUSY SLCT ERROR# SLCTIN# Ground Ground Ground Ground MegaDual PCI Motherboard User’s Guide Signal Signal Description ACK# AUTOFD# INIT# Ground Ground Ground Ground Cont’d...
  • Page 27 Step 9 Connect I/O, Continued J3B (S1) SER1 J3B (S2) SER2 J3B (S1) and J3B (S2) are 9-pin connectors that provide an AT-compatible serial port interface. The serial port base I/O port address and other serial port settings can be configured through the Advanced menu (Port Configuration subscreen) in AMIBIOS®...
  • Page 28 There is a small twist in the cable between the floppy connectors. The last (end) connector should be connected to floppy drive A: as shown below. MegaDual PCI Motherboard User’s Guide Cont’d...
  • Page 29 Step 9 Connect I/O, Continued JP11 Floppy Connector Pinout Twist in Floppy Cable Floppy B to A 10 to 16 11 to 15 DENSE1 DRATE0 -INDEX -MOTOR0 -FDSEL1 -FDSEL0 -MOTOR1 -WDATA -WGATE -TRK0 -WRPROT -RDATA HDSEL DSKCHNG Floppy B to A Floppy B to A Floppy B to A 12 to 14...
  • Page 30 Step 9 Connect I/O, Continued IDE Drives Attach the IDE drives in the following manner. Choose Advanced menu (IDE Configuration subscreen) in AMIBIOS® Setup to enable the onboard IDE controller. MegaDual PCI Motherboard User’s Guide Cont’d...
  • Page 31 Step 9 Connect I/O, Continued Attach IDE Cable to JP7 JP7 is the primary IDE (Integrated Drive Electronics) hard disk drive connector. Both the primary master and the primary slave IDE drives must be connected by cable to JP7, as shown below. JP7 is a 40-pin dual-inline berg that connects an IDE drive to the primary onboard IDE connector.
  • Page 32 Step 9 Connect I/O, Continued Ultra DMA 4/ATA66 Drives on the Primary Channel AMI MegaDual ships with two 80-pin IDE cables. Although the cable is 80-pin, the connectors are still 40-pin. 80-pin cables are required to support UDMA-4/ATA66 IDE drives.
  • Page 33 Step 9 Connect I/O, Continued JP7 Pinout JP7 is the primary IDE connector. The JP7 pinout is: -RESET DATA7 DATA8 DATA6 DATA9 DATA5 DATA10 DATA4 DATA11 DATA3 DATA12 DATA2 DATA13 DATA1 DATA14 DATA0 DATA15 KEY (N/C) -REQ -IOW -IOR IDERDY Pulldown -ACK INT14...
  • Page 34 Attach the secondary master and slave IDE drives to JP8 via a standard 40-pin IDE cable as shown on page 25. Ultra DMA 4/ATA66 Drives on the Secondary Channel AMI MegaDual ships with two 80-pin IDE cables. Although the cable is 80-pin, the connectors are still 40-pin.
  • Page 35 Step 9 Connect I/O, Continued JP8 Pinout JP8 is the secondary IDE connector. The JP8 pinout is: -RESET DATA7 DATA8 DATA6 DATA9 DATA5 DATA10 DATA4 DATA11 DATA3 DATA12 DATA2 DATA13 DATA1 DATA14 DATA0 DATA15 KEY (N/C) -REQ -IOW -IOR IDERDY Pulldown -ACK INT15...
  • Page 36 Please make sure that the bracket mounting screws do not touch the battery terminal when inserting PCI adapter cards in PCI Slot #4. If the screws touch the battery terminal, install the PCI adapter card in a different PCI Slot. MegaDual PCI Motherboard User’s Guide Description MEGSMI#...

  • Page 37: Step 10 Set Options On The Qlogic Menu

    This section displays the screens, options, default settings, and other possible settings for each item. How to access the QLogic Fast!UTIL When you boot the system, the information below displays. Press <Alt>-<Q> to access Fast!UTIL. AMIBIOS© 1999 American Megatrends, Inc., Version 07.00.00 BIOS Date 02/08/00 16:32:05 ……………. …………….
  • Page 38 Configuration Settings. The options to be selected are highlighted. The submenus for each option are documented. On this screen, select Configuration Settings and press <Enter>. The submenu for Configuration Settings displays, as shown on the following page. MegaDual PCI Motherboard User’s Guide Continued Cont’d...
  • Page 39 Step 10 Set Options on the QLogic Menu, Configuration Settings Screen This screen displays the list of configuration settings. You can select each item from the list to access a submenu and choose the options for that item. Select Host Adapter Settings to set the configuration for the host adapter and press <Enter>.
  • Page 40 Host Adapter BIOS. Select each item that you want to change and press <Enter>. A window displays the items. Use the arrow keys and press <Enter> to select the setting. MegaDual PCI Motherboard User’s Guide Continued Cont’d...
  • Page 41 Step 10 Set Options on the QLogic Menu, Configuration Settings Screen, cont’d… The Host Adapter Setting subscreen displays the list of host adapter settings. The system provides the BIOS address, BIOS revision number, and interrupt level. You can select the options for the other items, beginning at Host Adapter BIOS. The definitions and settings for the other items are: Item Host Adapter...
  • Page 42 If it does not, the result will be the same as Disabled. >4 Gbyte The settings are Enabled or Disabled. Addressing Fast Command Set this to Enabled to maximize bus transfer Posting performance.The settings are Enabled or Disabled. The default is Enabled. Cont’d MegaDual PCI Motherboard User’s Guide...
  • Page 43 Step 10 Set Options on the QLogic Menu, Configuration Settings Screen, cont’d… The second item on the Configuration Settings screen is SCSI Device Settings. Select SCSI Device Settings and press <Enter>. A window displays, allowing you to select the SCSI device settings for SCSI Bus 0 or SCSI Bus 1. The SCSI Bus 0 Device Settings screen is shown below.
  • Page 44 Settings. Select SCSI Bus Settings and press <Enter>. A window displays, allowing you to select the SCSI bus settings for SCSI Bus 0 or SCSI Bus 1. The SCSI Bus 0 Settings screen is shown below. Use the arrow keys and press <Enter> to change settings. MegaDual PCI Motherboard User’s Guide Continued Cont’d...
  • Page 45 Step 10 Set Options on the QLogic Menu, Configuration Settings Screen, cont’d… The settings for the SCSI bus items are: Item SCSI Bus SCSI ID SCSI Bus Reset SCSI Bus Reset Delay SCSI Bus Termination Continued Settings The settings are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15.
  • Page 46 You can select a setting for each item for SCSI IDs 0 to 15. Press <Tab> to toggle between individual and group settings. Use the arrow keys and press <Enter> to change settings. MegaDual PCI Motherboard User’s Guide Continued Cont’d...
  • Page 47 Step 10 Set Options on the QLogic Menu, Configuration Settings Screen, cont’d… The fifth item on the Configuration Settings screen is Selectable Boot Settings. Select Selectable Boot Settings and press <Enter>. The Selectable Boot Settings subscreen is shown below. Use the arrow keys and press <Enter> to change settings.
  • Page 48 Select Restore Default Adapter Settings and press <Enter>. The message Adapter Defaults Restored appears. MegaDual PCI Motherboard User’s Guide Continued Settings Use this to select the SCSI ID from which you want to boot. The system boots from the selected SCSI drive.
  • Page 49 Step 10 Set Options on the QLogic Menu, Configuration Settings Screen, cont’d… The last item on the Configuration Settings screen is Raw NVRAM Data (Non-Volatile Random Access Memory.) The Raw NVRAM Data subscreen displays the NVRAM data and byte offset in hexidecimal format. This information is for troubleshooting;...
  • Page 50 <Enter>. A window displays for you to select a SCSI bus. After you select tje SCSI bus and press <Enter>, the following screen displays. The default ID for the Qlogic SCSI host adapter is 7. MegaDual PCI Motherboard User’s Guide Continued Cont’d...
  • Page 51 Step 10 Set Options on the QLogic Menu, Scan Disk Utility Screen You can use the Scan Disk Utility screen to perform a low-level format or verify the disk media for a disk device. The following information for the selected SCSI bus displays: Vendor Product...
  • Page 52 Select Host Adapter Screen You can use the Select Host Adapter screen to view the adapter type and I/O address for the host adapter. On the Fast! UTIL Options screen, select the fourth option, Select Host Adapter, and press <Enter>. The following screen displays: MegaDual PCI Motherboard User’s Guide Continued Cont’d...
  • Page 53 Step 10 Set Options on the QLogic Menu, Exit Fast! UTIL Screen You can use the Exit Fast! UTIL screen to exit the QLogic menu. On the Fast! UTIL Options screen, select the fifth option, Exit Fast! UTIL, and press <Enter>.

  • Page 54: Step 11 Connect Scsi I/O

    SCSI connectors to internal non- wide (Type 2) connectors, cable assembly for converting from internal wide to internal non-wide SCSI connectors (Type 30), and cable assembly for converting from internal wide to internal non-wide SCSI connectors. MegaDual PCI Motherboard User’s Guide Cont’d...
  • Page 55 Step 11 Connect SCSI I/O, Continued High-Density 68-Pin SCSI Connector Pinout Signal Connector Cable Ground Data Ground Data Data 14 Data 15 SCOP1 Data 0 Data 1 Data 2 Data 3 Data 4 Data 5 Data 6 Data 7 Data (P) Ground Ground DIFFSENS...
  • Page 56 SCSI Signal Path The SCSI signal path is a controlled impedance environment with the following characteristic impedance: 90 ohms +/- 6 ohms for the REQ and ACK signals 90 ohms +/- 10 ohms for all other signals MegaDual PCI Motherboard User’s Guide Cont’d...
  • Page 57 Step 11 Connect SCSI I/O, Continued SCSI Termination The SCSI channels on the MegaDual motherboard use active termination for each SCSI channel. You must terminate the SCSI bus properly. The SCSI bus on each SCSI channel is an electrical transmission line and it must be terminated properly at both ends to minimize reflections and losses.
  • Page 58 For a disk array, set SCSI bus termination so that removing or adding a SCSI device does not disturb termination. An easy way to do this is to connect MegaDual at one end of the SCSI cable for each channel and to connect an external terminator module at the other end of each cable.

  • Page 59: Step 12 Install Drivers

    Step 12 Install Drivers The following drivers are provided with the MegaDual motherboard: one CD containing the American Megatrends ASM server management software one CD with SCSI drivers Installing SCSI Drivers The SCSI driver installation process is operating system-dependent. See the user documentation for the operating system that is installed in this computer for information about the SCSI driver installation procedure.

  • Page 60: Step 13 Test And Configure

    Configure the System Run AMIBIOS Setup. You must enter the requested information and save the configuration data in NVRAM. The system will then reset, run POST, and boot the operating system. See the following chapter for information on configuring the computer. MegaDual PCI Motherboard User’s Guide...

  • Page 61: Amibios Setup

    AMIBIOS Setup In ISA and EISA computers, the system parameters (such as amount of memory, type of disk drives and video displays, and many other elements) are stored in CMOS RAM. Unlike the DRAM (dynamic random access memory) that is used for standard system memory, CMOS RAM requires very little power.

  • Page 62: Amibios Setup Menu

    Processor Speed : 667MHz System Memory : 64MB System Time 11:31:17 System Date Thu 02/24/00 ©Copyright 1985-1999, American Megatrends, Inc. MegaDual PCI Motherboard User’s Guide Power Boot Security Select Screen Select Item Change Field Tab Select Field General Help Load FailSafe...

  • Page 63: Section 1 Main Setup

    System Date Thu 02/24/00 ©Copyright 1985-1999, American Megatrends, Inc. System Date/System Time Use this option to change the system date or time. Highlight Date or Time using the arrow keys. Enter new values through the keyboard. Press the <Tab> key or the arrow keys to move between fields.

  • Page 64: Section 2 Advanced Cmos Setup

    > Standard Boot Settings > Port Configuration > Floppy Configuration > IDE Configuration > Event Log Configuration > System Health Monitoring Hardware ©Copyright 1985-1999, American Megatrends, Inc. MegaDual PCI Motherboard User’s Guide Power Boot Security Configure Settings during System Boot Select Screen...
  • Page 65 Enabled Hit ‘DEL’ Message Display Boot To OS/2 ©Copyright 1985-1999, American Megatrends, Inc. Quick Boot Set this option to Enabled to instruct AMIBIOS to boot quickly when the computer is powered on. The settings are Disabled or Enabled. The Optimal and Fail-Safe default settings are Disabled.
  • Page 66 Absent. The Optimal and Fail-Safe default settings are Present. Primary Display This option configures the type of monitor attached to the computer. The settings are Absent, VGA/EGA, Color 40x25, Color 80x25, or Monochrome. The Optimal and Fail- Safe default settings are VGA/EGA. MegaDual PCI Motherboard User’s Guide Cont’d...
  • Page 67 Advanced CMOS Setup, Continued PS/2 Mouse Support Set this option to Enabled to enable AMIBIOS support for a PS/2-type mouse. The settings are Enabled or Disabled. The Optimal and Fail-Safe default settings are Enabled. BootUp Num-Lock Set this option to On to turn the Num Lock key On at system boot. The settings are On or Off.

  • Page 68: Advanced Cmos Setup

    Disabled. Serial Port1 IRQ This option specifies the IRQ used by serial port 1. The settings are Disabled,3 or 4. The Optimal setting is 4. The Fail-Safe setting is Disabled. MegaDual PCI Motherboard User’s Guide Disabled Select Screen Select Item...
  • Page 69 Advanced CMOS Setup, Continued Onboard Serial Port2 This option specifies the base I/O port address of serial port 2. The settings are Disabled, 3F8, 3E8, or 2E8. The Optimal setting is 2F8. The Fail-Safe setting is Disabled. Onboard Serial Port2 IRQ This option specifies the IRQ used by serial port 2. The settings are Disabled, or 3 or 4.
  • Page 70 Onboard Floppy Controller Set this option to Enabled to enable the floppy drive controller on the motherboard. The settings are Enabled, or Disabled. The Optimal and Fail-Safe default settings are Enabled. MegaDual PCI Motherboard User’s Guide Disabled Select Screen Select Item...
  • Page 71 Advanced CMOS Setup, Continued Floppy Drive A: and B: Move the cursor to these fields via are Disabled, 360 KB 5¼ inch, 1.2 MB 5¼ inch, 720 KB 3½ inch, 1.44 MB 3½ inch or 2.88 MB 3½ inch. The Optimal setting for floppy drive A: is 1.44 MB 3½. The Failsafe setting for floppy drive A: is 1.44 MB 3½.
  • Page 72 Onboard IDE Controller This option specifies the IDE channels used by the onboard IDE controller. The settings are Disabled, Primary, Secondary, or Both. The Optimal and Fail-Safe default settings are Both. MegaDual PCI Motherboard User’s Guide Disabled, disables the integrated IDE Controller.
  • Page 73 Advanced CMOS Setup, Continued IDE BusMaster Set this option to Enabled to allow the IDE controller to work in busmastering mode. If you disable this option, the IDE controller will work in PIO mode. When IDE busmaster is enabled, the IDE busmastering drivers must used for the operating systems. The settings are Disabled, Primary, Secondary, or Both.
  • Page 74 Auto Block (Multi-Sector Transfer) Mode Auto PIO Mode DMA Mode S.M.A.R.T. 32Bit Data Transfer ARMD Emulation Type ©Copyright 1985-1999, American Megatrends, Inc. MegaDual PCI Motherboard User’s Guide Select Screen Select Item Change Option General Help Auto Load Failsafe Load Optimal...
  • Page 75 Advanced CMOS Setup, Continued Drive Parameters The first list in the left frame is for the drive parameters. The drive parameters are: Parameter Device Type of device, such as Hard Disk. Vendor Manufacturer of the device. Size The size of the device. LBA Mode LBA (Logical Block Addressing) is a method of addressing data on a disk drive.
  • Page 76 ARMD Emulation Type Select this setting if you are configuring an LS120, MO (Magneto-Optical), or Iomega Zip drive. The settings are Auto, Floppy, or Hard Disk. The Optimal and Fail-Safe default settings are Auto. MegaDual PCI Motherboard User’s Guide IDE PIO mode The settings are Auto, 1, 2, 3 or 4. The Optimal and...
  • Page 77 View Event Log > Mark All Events As Read ©Copyright 1985-1999, American Megatrends, Inc. Event Logging Set this option to Enabled to allow the system to log events. The events logged by AMIBIOS are post errors, such as a bad CMOS, floppy error, or hard drive error. The settings are Enabled or Disabled.
  • Page 78 Configuration screen, select View All Events As Read Log and press <Enter>. Use the up and down arrow keys to select an item, and the plus (+) and minus (-) keys to change the option setting. The settings are described on the following pages. MegaDual PCI Motherboard User’s Guide Cont’d...
  • Page 79 > Configure VCC –12 Voltage ------------------------------------------ > Configure CPU-0 Fan Speed > Configure CPU-1 Fan Speed > Configure Chassis Fan Speed ©Copyright 1985-1999, American Megatrends, Inc. Select CPU Temperature Alert/Warning levels Select Screen Select Item Enter Go to Sub Screen...
  • Page 80 CPU Temperature High Alert 70 CPU Temperature High Warning CPU Temperature Low Warning 00 CPU Temperature Low Alert ©Copyright 1985-1999, American Megatrends, Inc. MegaDual PCI Motherboard User’s Guide Lowest allowed value of High Alert is the current value of : 17 the High Warning.
  • Page 81 CPU Voltage Physical Low Limit CPU Voltage High Alert CPU Voltage High Warning 2.15 CPU Voltage Low Warning 1.95 CPU Voltage Low Alert ©Copyright 1985-1999, American Megatrends, Inc. Lowest allowed value of High Alert is the current value of : 1.98 the High Warning.
  • Page 82 CPU-0 Fan Speed High Alert 7500 CPU-0 Fan Speed High Warning CPU-0 Fan Speed Low Warning 00 CPU-0 Fan Speed Low Alert ©Copyright 1985-1999, American Megatrends, Inc. MegaDual PCI Motherboard User’s Guide Lowest allowed value of High Alert is the current value of the High Warning.

  • Page 83: Section 3 Chipset Setup

    Memory ECC Mode Disabled ©Copyright 1985-1999, American Megatrends, Inc. Processor Serial Number Set this option to Enabled to allow the operating system and applications to be able to read the CPU serial number from your CPUs. The Optimal and Failsafe settings are Disabled.
  • Page 84 Continued Watch Dog Timer Set this option to Enabled to use the MegaDual Watch Dog Timer. If the system locks up, this timer will reset it. System lock is assumed if there is no PCI bus cycle for about 1.2 seconds.

  • Page 85: Section 4 Pci/Pnp Setup

    > PCI Latency Timers ©Copyright 1985-1999, American Megatrends, Inc. Plug and Play-Aware OS Set this option to Yes if the operating system in this computer follows the Plug and Play specification. Windows 95® is PnP-aware. The settings are Yes or No. The Optimal and Fail-Safe default settings are No.
  • Page 86 Onboard SCSI Controller This option enables or disables the onboard SCSI controller. The settings are Enabled or Disabled. The Optimal and Fail-Safe default settings are Disabled. PCI Latency Timers Press <Enter> to access the sub screen to view the PCI latency timing information. MegaDual PCI Motherboard User’s Guide Cont’d...
  • Page 87 Onboard LAN Latency Time Onboard SCSI Latency Time Default Latency Time ©Copyright 1985-1999, American Megatrends, Inc. Slot-1 Latency Time Slot-2 Latency Time Slot-3 Latency Time Slot-4 Latency Time This option specifies the latency timings (in PCI clocks) for PCI devices installed in the Slot-1, 2, 3, and 4 expansion slots.
  • Page 88 64. Default Latency Time This option specifies the default latency timings for PCI devices. The settings are 32, 64, 96, 128, 160, 192, 224, or 248. The Optimal and Fail-Safe default settings are 64. MegaDual PCI Motherboard User’s Guide...

  • Page 89: Section 5 Power Management Setup

    USB Controller Resume Disabled PME Resume ©Copyright 1985-1999, American Megatrends, Inc. ACPI Aware O/S Set this option to Yes if the operating system you are running under complies with the Intel ACPI (Advanced Configuration and Power Interface) specification. The settings are Yes or No.

  • Page 90: Power Management

    Hard Disk Power Down Mode This option specifies the power conserving state that the hard disk drive enters after the specified period of hard drive inactivity has expired. The settings are Disabled, Stand By, or Suspend. The Optimal and Failsafe settings are Suspend. MegaDual PCI Motherboard User’s Guide Description Cont’d...
  • Page 91 Power Management, Continued Hard Disk Time Out (Minute) This option specifies the length of a period of hard disk drive inactivity. When this length of time expires, the computer enters power-conserving state specified in the Hard Disk Power Down Mode option. The settings are Disabled, 1 min. (minute), 2 min, 3 min., 4 min., 5 min., 6 min, 7 min., 8 min., 9 min., 10 min., 11 min., 12 min., 13 min,14 min, or 15 min.
  • Page 92 Set this option to Enabled to wake the system up from suspend if there is an incoming modem ring. For this feature to work, the modem must be connected to the onboard serial ports. The settings are Disabled, or Enabled. The Optimal and Fail-Safe default settings are Disabled. MegaDual PCI Motherboard User’s Guide...

  • Page 93: Section 6 Boot Setup

    BIOS SETUP UTILITY Main Advanced Chipset PCIPnP Exit > Boot Device Priority > Hard Disk Drives > Removable Devices ©Copyright 1985-1999, American Megatrends, Inc. Power Boot Security Select Screen Select Item Enter Go to Sub Screen General Help Load Failsafe Load Optimal...
  • Page 94 The settings are Removable Dev, Hard Drive, ATAPI, or CDROM. The Optimal and Failsafe settings are: boot device – Removable Device boot device – ATAPI CDROM boot device – Hard Drive MegaDual PCI Motherboard User’s Guide Boot Specifies the boot sequence from the available devices.
  • Page 95 Hard Disk Drives on the Boot Setup screen and press <Enter>. The following screen displays examples of hard disk drives: BIOS SETUP UTILITY Hard Disk Drive Maxtor 7850 AV. Hard Disk Device QLogic HA 0 SCS ©Copyright 1985-1999, American Megatrends, Inc. Boot Specifies the boot sequence from the available devices. Select Screen...

  • Page 96: Boot Setup

    BIOS SETUP UTILITY Removable Device Floppy Removable Device LS120 ©Copyright 1985-1999, American Megatrends, Inc. MegaDual PCI Motherboard User’s Guide Boot Specifies the boot sequence from the available devices. Select Screen Select Item Change Option...

  • Page 97: Section 7 Security Setup

    Section 7 Security Setup AMIBIOS Password Support Two Levels of Password Protection AMIBIOS provides both a Supervisor and a User password. If you use both passwords, the Supervisor password must be set first. The system can be configured so that all users must enter a password every time the system boots or when AMIBIOS Setup is executed, using either or both the Supervisor password or User password.

  • Page 98: Security Setup

    Installed displays. If not, Not Installed displays. User Password Indicates whether a user password has been set. If the password has been installed, Installed displays. If not, Not Installed displays. MegaDual PCI Motherboard User’s Guide Power Boot Security Immediately clears the User password.
  • Page 99 Security Setup, Continued Change Supervisor Password Select this option and press <Enter> to access the sub screen. You can use the sub screen to change the supervisor password. Change User Password Select this option and press <Enter> to access the sub screen. You can use the sub screen to change the user password.
  • Page 100 Type the password and press <Enter>. The screen does not display the characters entered. Retype the password as prompted and press <Enter>. If the password confirmation is incorrect, an error message appears. The password is stored in NVRAM after AMIBIOS completes. MegaDual PCI Motherboard User’s Guide...

  • Page 101: Section 8 Exit Menu

    Load Failsafe Defaults > Discard Changes ©Copyright 1985-1999, American Megatrends, Inc. Exit Saving Changes When you have completed the system configuration changes, choose this option to leave AMIBIOS Setup and to reboot the computer so the new system configuration parameters can take effect. Select Exit Saving Changes from the Exit menu and press <Enter>.
  • Page 102 Click on Ok to load failsafe defaults. Discard Changes Select Discard Changes from the Exit menu and press <Enter>. Discard Changes? [Ok] [Cancel] appears in the window. Click on Ok to discard changes. MegaDual PCI Motherboard User’s Guide...

  • Page 103: Programming Flash Rom

    Programming Flash ROM All versions of the MegaDual PCI motherboard use Flash EPROM to store the system BIOS. The advantage of Flash EPROM is the EPROM chip does not have to be replaced to update the BIOS. The end user can actually reprogram the BIOS, using a ROM file supplied by American Megatrends.
  • Page 104 S798P.ROM S798P.ROM resides on a floppy disk and contains the updated main BIOS code. American Megatrends will provide this file when the AMIBIOS for the MegaDual PCI motherboard must be updated. S798P.ROM must be present in the root directory of the floppy disk before the onboard Flash EPROM can be reprogrammed.
  • Page 105 Programming the Flash ROM, Beep Codes The bootblock code produces a series of beeps during Flash ROM programming to: signify completion of a step (as shown on the previous page), or to signal an error. Error beeps are arranged in a coded sequence and have different meanings depending on when they occur.
  • Page 106 The main menu screen is shown below. You are prompted to save or delete the existing BIOS. Enter Y if you want to save the existing BIOS ROM, or N if you do not. MegaDual PCI Motherboard User’s Guide Continued...
  • Page 107 Programming the Flash ROM, B) Programming the Flash EPROM Using the AMIFlash Utility, cont’d Enter the filename, s798p.rom, that you want to save the existing BIOS to and press <Enter>. Enter the BIOS filename from which the Flash ROM will be programmed and press <Enter>.
  • Page 108 After the boot block is programmed, reboot the system. Turn the power off. Remove the jumper on JP5. Enter Y if you want to program the boot block or N if you do not want to program the boot block. MegaDual PCI Motherboard User’s Guide Continued Action...

  • Page 109: Bootblock Code Checkpoint Codes

    Bootblock Code Checkpoint Codes Code Verify the Boot Block BIOS checksum. Disable the internal cache, DMA, and interrupt controllers. Initialize the system timer. Start memory refresh. Initialize the chipset registers. Set the BIOS size to 128K. Make the 512 KB base memory available. Test the base 64 KB of system memory.
  • Page 110 MegaDual PCI Motherboard User’s Guide...

  • Page 111: Deleting A Password

    Deleting a Password If you forget the passwords you set up through AMIBIOS Setup, the only way you can restart the computer is to erase the system configuration information where the passwords are stored. System configuration data is stored in CMOS RAM, a type of memory that consumes very little power.
  • Page 112 MegaDual PCI Motherboard User’s Guide...

  • Page 113: A Specifications

    Specifications Engineering Specifications Temperature Ranges The following values are ambient temperatures inside the computer case. The board temperatures reflect the dual Pentium II/Pentium III CPU heat dissipation requirements because they will be the hottest motherboard components. Temperature specifications vary with the CPU frequency. Frequency Heat Sink...
  • Page 114 MegaDual PCI Motherboard User’s Guide...

  • Page 115: B Cable Information

    Cable Information The following table contains cable manufacturer and part number information for IDE, SCSI, floppy, parallel ports, serial ports, LAN, and MegaRAC. IDE cable SCSI cable Floppy cable Parallel cable Serial cable LAN cable (LAN cable might not be necessary.) MegaRAC cable (MegaRAC cable...
  • Page 116 MegaDual PCI Motherboard User’s Guide...

  • Page 117: Index

    Index Boot Device, 71 ACPI Aware O/S, 83 Active termination, 51 Advanced Chipset Setup, 77 Advanced CMOS Setup, 58 AGP Multi-Trans Timer (AGP Clocks), 78 Allocate IRQ to PCI VGA, 80 AMIBIOS Password Support, 91 AMIBIOS Setup, 55 AMIBIOS Setup Menu, 56 AMIFlash Beep Codes, 99 Avoid Static Electricity, 4...
  • Page 118 LAN cable, 109 LBA Mode, 69 MegaRAC cable, 109 MegaRAC PCI adapter, 30 Monitor, 60 Motherboard layout, 3 MegaDual PCI Motherboard User’s Guide Mouse Cable, 16 Mouse Support, 61 NVRAM (Non-Volatile Random Access Memory), 91 Onboard Adapters, 19 Onboard Floppy Controller, 64...
  • Page 119 Quick Boot, 59 Reset Switch Connector, 17 Resource conflicts, 19 S.M.A.R.T. for Hard Disks, 70 S798P.ROM, 98 S798P.ROM file, 97 SCSI cable, 109 SCSI Cable Considerations, 50 SCSI Cables, 51 SCSI Connectors, 48 SCSI Drivers Installing, 53 SCSI Signal Path, 50 SCSI Termination, 51 SCSI Termination Possibilities, 52 SDRAM DIMM Sockets, 9...
  • Page 120 MegaDual PCI Motherboard User’s Guide...

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