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Supero SUPER P4QH6 User Manual

Supermicro p4qh6 motherboards: user guide
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SUPER P4QH8
SUPER P4QH6
USER'S MANUAL
Revision 1.0a

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  • Page 1 ® UPER SUPER P4QH8 SUPER P4QH6 USER’S MANUAL Revision 1.0a...
  • Page 2 The State of California, County of Santa Clara shall be the exclusive venue for the resolution of any such disputes. Supermicro's total liability for all claims will not exceed the price paid for the hardware product. Unless you request and receive written permission from SUPER MICRO COMPUTER, you may not copy any part of this document.

  • Page 3: Preface

    This manual is written for system integrators, PC technicians and knowledgeable PC users. It provides information for the installation and use of the SUPER P4QH8/P4QH6 mainboard. The SUPER P4QH8/P4QH6 sup- ports up to four Intel Xeon system (front side) bus speed. Please refer to the support section of our web site for a complete listing of supported processors ( http:// www.supermicro.com/TechSupport.htm).

  • Page 4: Table Of Contents

    Checklist ... 1-1 Contacting Supermicro ... 1-2 SuperP4QH8/P4QH6 Image ... 1-3 Super P4QH8/P4QH6 Layout ... 1-4 Super P4QH8/P4QH6 Quick Reference ... 1-5 Motherboard Features ... 1-6 ServerWorks GC-HE Chipset: System Block Diagram ... 1-8 Chipset Overview ... 1-9 Special Features ... 1-9 ATI Graphics Controller ...
  • Page 5 NIC_LED ... 2-11 C ... 2-12 Chassis Intrusion ... 2-12 Keyboard Lock ... 2-12 Overheat LED ... 2-12 Speaker ... 2-12 Fan Headers ... 2-13 Serial Ports ... 2-13 ATX PS/2 Keyboard and Mouse Ports ... 2-13 Universal Serial Bus (USB) Connector ... 2-13 IPMB ...
  • Page 6 UPER P4QH8/P4QH6 User’s Manual Chapter 3: Troubleshooting Troubleshooting Procedures ... 3-1 Before Power On ... 3-1 No Power ... 3-1 No Video ... 3-1 Memory Errors ... 3-2 Losing the System’s Setup Configuration ... 3-2 Technical Support Procedures ... 3-2 Frequently Asked Questions ...

  • Page 7: Chapter 1 Introduction

    Checklist Congratulations on purchasing your motherboard from a leader in the indus- try. Supermicro boards are designed with the utmost attention to detail to provide you with the highest standards in quality and performance. Please check that the following items have been included with your mother- board.

  • Page 8: Contacting Supermicro

    UPER P4QH8/P4QH6 User’s Manual Contacting Supermicro Headquarters Address: SuperMicro Computer, Inc. 980 Rock Ave. San Jose, CA 95131 U.S.A. Tel: +1 (408) 503-8000 Fax: +1 (408) 503-8008 Email: marketing@supermicro.com (General Information) support@supermicro.com (Technical Support) Web Site: www.supermicro.com Europe Address: SuperMicro Computer B.V.

  • Page 9: Superp4Qh8/P4Qh6 Image

    Chapter 1: Introduction SUPER P4QH8/P4QH6 Figure 1-1. SUPER P4QH8/P4QH6 Image Note: The only difference between the P4QH8 and the P4QH6 is the type of onboard SCSI controller (Ultra320 and Ultra160, respectively).

  • Page 10: Super P4Qh8/P4Qh6 Layout

    - VRM Slots: These are included to support future processors with different voltage requirements (VRM modules not included). - Jumpers not indicated are for test purposes only. *The P4QH6 has an AIC-7899 SCSI controller. (not drawn to scale) VRM Slot...
  • Page 11 JP50 JP52 JP62 MEC Slot USB 0/1 Note: The only difference between the P4QH8 and the P4QH6 is the type of the onboard SCSI (Ultra320 and Ultra160, respectively). Description Primary ATX Power Connector COM1/3 Serial Port Connector COM2/4 Serial Port /Header...

  • Page 12: Motherboard Features

    512KB L3 cache at a front side bus speed of 400 MHz. Note: Please refer to the support section of our web site for a complete listing of supported processors (http://www.supermicro.com/TechSupport.htm). See Section 2-2 for more details. M e m o r y •...
  • Page 13 Chapter 1: Introduction Onboard I/O • AIC-7902 for dual channel Ultra320 SCSI (P4QH8) • AIC-7899 for dual channel Ultra160 SCSI (P4QH6) • Integrated ATI Rage XL 8 MB Graphics Controller • Intel 82550 for integrated onboard Ethernet • Dual channel ATA/100 EIDE bus master controller •...

  • Page 14: Serverworks Gc-He Chipset: System Block Diagram

    UPER P4QH8/P4QH6 User’s Manual CPU 4 PCI-X Slot SCSI CIOB30 CIOB30 PCI-X Slot PCI-X Slot BIOS IPMI Figure 1-5. Note: This is a general block diagram. Please see the previous Motherboard Features Section for details on the features of your motherboard.

  • Page 15: Chipset Overview

    Special Features ATI Graphics Controller The P4QH8/P4QH6 has an integrated ATI video controller based on the Rage XL graphics chip. The Rage XL utilizes 8 MB of memory and fully supports sideband addressing. This onboard graphics package can provide a band- width of up to 512 MB/sec over a 32-bit graphics memory bus.

  • Page 16: Pc Health Monitoring

    UPER P4QH8/P4QH6 User’s Manual PC Health Monitoring This section describes the PC health monitoring features of the SUPER P4QH8/P4QH6. These motherboards have an onboard System Hardware Monitor chip that supports PC health monitoring. Onboard Voltage Monitors for the CPU Cores, +5V and +12V The onboard voltage monitor will scan these voltages continuously.

  • Page 17: 1-5 Acpi Features

    The system BIOS is protected by hardware that prevents viruses from infecting the BIOS area. through the flash utility provided by Supermicro. This feature can prevent viruses from infecting the BIOS area and destroying valuable data. Auto-Switching Voltage Regulator for the CPU Core The auto-switching voltage regulator for the CPU core can support up to 20A current and auto-sense voltage IDs ranging from 1.4V to 3.5V.

  • Page 18: Wake-On-Lan (Wol)

    LAN traffic is kept to a minimum and users are not interrupted. The motherboards have a 3-pin header (WOL) to connect to the 3-pin header on a Network Interface Card (NIC) that has WOL capability.

  • Page 19: Power Supply

    It is even more important for processors that have CPU clock rates of 1 GHz and above. The SUPER P4QH8/P4QH6 accommodates ATX power supplies. Although most power supplies generally meet the specifications required by the CPU, some are inadequate.
  • Page 20 UPER P4QH8/P4QH6 User’s Manual The Super I/O supports one PC-compatible printer port (SPP), Bi-directional Printer Port (BPP) , Enhanced Parallel Port (EPP) or Extended Capabilities Port (ECP). The Super I/O provides functions that comply with ACPI (Advanced Con- figuration and Power Interface), which includes support of legacy and ACPI power management through an SMI or SCI function pin.

  • Page 21: Chapter 2 Installation

    ESD. Also, to prevent damage to your system board, it is important to handle it very carefully. Also note that the size and weight of the P4QH8/ P4QH6 motherboard system board can cause it to bend if handled improp- erly, which may result in damage. To prevent the P4QH8/P4QH6 from bend- ing, always keep one hand under the center of the board to support it when handling.
  • Page 22 UPER P4QH8/P4QH6 User’s Manual Processor Support: Single or Dual: Intel Xeon MP processors to 1.6 GHz. Install processors into the CPU1 (single) socket or CPU1 and and CPU4 sockets (dual). Quad: Intel Xeon MP processors to 1.6 GHz. IMPORTANT: Always connect the power cord last and always remove it before adding, removing or changing any hardware components.
  • Page 23 4. Secure the other retention bracket into position by repeating Step 3. 5. Lift the lever on the CPU socket: lift the lever completely or you will damage the CPU socket when power is applied . (Install CPU1 first.) 6. Install the CPU in the socket. Make sure that pin 1 of the CPU is seated on pin 1 of the socket (both corners are marked with a triangle).
  • Page 24 UPER P4QH8/P4QH6 User’s Manual Figure 2-1. 603PGA Socket: Empty and with Processor Installed Warning! Make sure you lift the lever completely when installing the CPU. If the lever is only partly raised, damage to the socket or CPU may result.

  • Page 25: Installing Memory In The Mec

    Installing Memory in the MEC Note: Check the Supermicro web site for recommended memory modules: http://www.supermicro.com/TECHSUPPORT/FAQs/Memory_vendors.htm Exercise extreme care when installing or removing DIMM modules to prevent any possible damage. The MEC must be populated in the manner described in Step 2 below.
  • Page 26 UPER P4QH8/P4QH6 User’s Manual Installing the MEC: After populating the MEC, carefully install it back into its slot on the motherboard, making sure it is fully seated. Finish by tightening the two screws that secure the retention plate to the chassis.
  • Page 27 Figure 2-3. Installing DIMM into Slot To Install: Insert module vertically and press down until it snaps into place. Pay attention to the notch. To Remove: Use your thumbs to gently push near the edge of both ends of the module. This should release it from the slot. Chapter 2: Installation...

  • Page 28: I/Oports/Control Panel Connectors

    UPER P4QH8/P4QH6 User’s Manual I/OPorts/Control Panel Connectors The I/O ports are color coded in conformance with the PC 99 specification. See Figure 2-4 below for the colors and locations of the various I/O ports. Mouse (Green) Keyboard USB Ports (Purple) Figure 2-4.
  • Page 29 LED indicators. Refer to the following section for descriptions and pin definitions. Note: JF1 conforms to the 34-pin SSI standard to be used with Supermicro chassis, which is why some connections (such as Overheat LED) have only a single pin.

  • Page 30: Connecting Cables

    UPER P4QH8/P4QH6 User’s Manual Connecting Cables Main ATX Power Supply Connection 24-pin connector: The power supply connector on the P4QH8/P4QH6 meets the SSI (Superset ATX) 24-pin specifica- tion. See the table on the right for pin definitions. Note: the use of a 20-pin power connector is not recommended.

  • Page 31: Pwr_On

    PWR_ON The PWR_ON connection is lo- cated on pins 11 and 13 of JF1. Momentarily contacting both pins will power on/off the system. This button can also be configured to function as a suspend button (see the Power Button Mode setting in BIOS).

  • Page 32: Chassis Intrusion

    UPER P4QH8/P4QH6 User’s Manual The I C connection is located on pins 16 and 18 of JF1. the table on the right for pin defini- tions. Chassis Intrusion A Chassis Intrusion connection is located on pin 20 of JF1. See the table on the right for pin defini- tions.

  • Page 33: Fan Headers

    Fan Headers* The motherboard has four CPU fans, four chassis fans and two overheat fan headers. table on the right for pin defini- tions. Serial Ports COM1/COM3 is located under the parallel port (see Figure 2-4). See the table on the right for pin defini- tions.

  • Page 34: Smb

    UPER P4QH8/P4QH6 User’s Manual An SMB (System Management Bus) connection is located at J63. Connect the appropriate cable here to utilize SMB on your sys- tem. Wake-On-LAN The Wake-On-LAN header is des- ignated as WOL. You must enable the LAN Wake-Up setting in BIOS...

  • Page 35: Front Panel Nmi Header

    Front Panel NMI Header Connect a cable from the NMI but- ton on your chassis to the header labelled JP50 for front side NMI control. NMI allows you to issue a non-maskable interrupt to force the system to a halt state. This is used for diagnostic purposes and allows you to perform a memory download to determine the cause...

  • Page 36: Jumper Settings

    UPER P4QH8/P4QH6 User’s Manual Jumper Settings Explanation of Jumpers To modify the operation of the motherboard, jumpers can be used choose between settings. Jumpers create shorts between two pins to change the function of the connector. Pin 1 is identified with a square solder pad on the printed circuit board.

  • Page 37: Lan Enable/Disable

    Spread Spectrum. See the table on the right for jumper settings. Third Power Supply Fail Alarm Enable/Disable This feature is for Supermicro triple redundant power supplies only. When enabled, the system will notify you in the event of a power supply failure.

  • Page 38: Lvd Channel A Scsi Termination Enable/Disable

    UPER P4QH8/P4QH6 User’s Manual LVD Channel A SCSI Termination Enable/Disable Jumper JPA1 allows you to enable or disable termination for the LVD Channel A SCSI con- nector. The normal (default) position is open to enable SCSI termination. See the table on the right for jumper settings.

  • Page 39: Debug Leds

    Debug LEDs D13-D20 Eight surface-mounted debug LEDs located near the primary IDE connector (D13-D20) are used to provide POST code information. See the diagrams below for reading the debug LEDs and refer to Appendix B for a complete list of POST codes (a partial listing of the most common codes are given below).

  • Page 40: Parallel Port, Floppy/Hard Disk Drive And Scsi Connections

    UPER P4QH8/P4QH6 User’s Manual Parallel Port, Floppy/Hard Disk Drive and SCSI Connections Note the following when connecting the floppy and hard disk drive cables: • The floppy disk drive cable has seven twisted wires. • A red mark on a wire typically designates the location of pin 1.

  • Page 41: Floppy Connector

    Floppy Connector The floppy connector is lo- cated on J19. See the table on the right for pin definitions. IDE Connectors There are no jumpers to configure the onboard IDE connectors J14 and J15. See the table on the right for pin definitions.

  • Page 42: Ultra320/160 Scsi Connectors

    UPER P4QH8/P4QH6 User’s Manual Ultra320/160 SCSI Connectors Refer to the table below for the pin definitions of the Ul- tra320/160 (P4QH8/P4QH6) SCSI connectors located at JA1 and JA2. 6 8 -p in U ltra 3 2 0 /1 6 0 S C S I C o n n e c to rs (J A1 , J A2 )

  • Page 43: 2-10 Installing Software Drivers

    Chapter 2: Installation 2-10 Installing Software Drivers After all the hardware has been installed you must install the software drivers. The necessary drivers are all included on the Supermicro CD that came packaged with your motherboard. After inserting this CD into your CDROM drive, the display shown in Figure 2-5 should appear.
  • Page 44 UPER P4QH8/P4QH6 User’s Manual Notes 2-24...

  • Page 45: Chapter 3 Troubleshooting

    Troubleshooting Procedures Use the following procedures to troubleshoot your system. followed all of the procedures below and still need assistance, refer to the ‘Technical Support Procedures’ and/or ‘Returning Merchandise for Service’ section(s) in this chapter. Note: Always disconnect the power cord before adding, changing or installing any hardware components.

  • Page 46: Memory Errors

    UPER P4QH8/P4QH6 User’s Manual If you are a system integrator, VAR or OEM, a POST diagnos- tics card is recommended. For I/O port 80h codes, refer to Memory Errors 1. Make sure the DIMM modules are fully seated in their slots and installed four at a time in the order stated in Chapter 2, Section 3.

  • Page 47: Frequently Asked Questions

    What are the various types of memory that the P4QH8/ P4QH6 motherboard can support? Answer: The P4QH8/P4QH6 comes with an MEC card having 16 DIMM slots that support up to 32 GB of 168-pin, registered ECC DDR-266/200 only. Unbuffered SDRAM or non-ECC memory is not supported. PC133 and PC100 memory are not supported.
  • Page 48 UPER P4QH8/P4QH6 User’s Manual site. Also, check the current BIOS revision and make sure it is newer than your BIOS before downloading. Select your motherboard model and down- load the BIOS file to your computer. Unzip the BIOS update file and you will find the readme.txt (flash instructions), the flash.bat (BIOS flash utility) and...

  • Page 49: Returning Merchandise For Service

    Chapter 3: Troubleshooting Question: Why can't I turn off the power using the momentary power on/off switch? Answer: The instant power off function is controlled in BIOS by the Power Button Mode setting. When the On/Off feature is enabled, the motherboard will have instant off capabilities as long as the BIOS has control of the system.
  • Page 50 UPER P4QH8/P4QH6 User’s Manual Notes...

  • Page 51: Chapter 4: Amibios

    Introduction This chapter describes the AMIBIOS for the P4QH8/P4QH6. The AMI ROM BIOS is stored in a Flash EEPROM and can be easily upgraded using a floppy disk-based program. Note: Due to periodic changes to BIOS, some settings may have been added or deleted and might not yet be recorded in this manual.

  • Page 52: Bios Features

    UPER P4QH8/P4QH6 User’s Manual BIOS Features • Supports Plug and Play V1.0A and DMI 2.3 • Supports Intel PCI (Peripheral Component Interconnect) (PME) local bus specification 2.2 • Supports Advanced Power Management (APM) specification v 1.1 • Supports ACPI •...

  • Page 53: Main Menu

    The Main BIOS Setup Menu Press the <Delete> key during the POST (Power On Self Test) to enter the Main Menu of the BIOS Setup Utility. All Main Setup options are described in this section. The Main BIOS Setup screeen is displayed below. Main Advanced Chipset PCIPnP AMIBIOS Version:...

  • Page 54: Advanced Bios Setup

    UPER P4QH8/P4QH6 User’s Manual Advanced BIOS Setup Choose Advanced BIOS Setup from the AMIBIOS Setup Utility main menu with the Left/Right arrow keys. You should see the following display. Select one of the items in the left frame of the screen, such as SuperIO Configuration, to go to the sub screen for that item.

  • Page 55: Super Io Configuration

    Super IO Configuration Advanced Configure Winbond627F Serial Port(s) and Parallel P Serial Port1 Address Serial Port1 IRQ Serial Port2 Address Serial Port2 IRQ Serial Port2 Mode Parallel Port Address Parallel Port IRQ Parallel Port Mode ECP Mode DMA Channel V07.00 (C)Copyright 1985-2001, American Megatrends, Inc. The Super IO Configuration includes the following items: Serial Port 1 Address This option specifies the base I/O port address of serial port 1.

  • Page 56: Ide Configuration

    UPER P4QH8/P4QH6 User’s Manual Serial Port 2 Mode Use this option to choose the Serial Port 2 Mode. The settings are Normal, Sharp-IR, SIR and consumer. Parallel Port Address This option specifies the I/O address used by the parallel port. The settings for this item include Disabled, 378, 278 and 3BC.
  • Page 57 Chapter 4: AMIBIOS Type This option sets the type of device that the AMIBIOS attempts to boot from after AMIBIOS POST is completed. The settings include Not in- stalled, Auto, CDROM and ARMD. The "Auto" setting allows BIOS to automatically detect the presence of the IDE controller. LBA/Large Mode LBA (Logical Block Addressing) is a method of addressing data on a disk drive.
  • Page 58 UPER P4QH8/P4QH6 User’s Manual S.M.A.R.T. S.M.A.R.T stands for Self-Monitoring Analysis and Reporting Technol- ogy, a feature that can help predict impending drive failures. The settings are Auto, Disabled and Enabled. "Disabled" to enable or disable the S.M.A.R.T. Select "Auto" to auto detect S.M.A.R.T.

  • Page 59: Floppy Configuration

    Chapter 4: AMIBIOS when the device is accessed through BIOS. ATA(PI) Detect Timeout (Seconds) Set this option to stop the system search for ATAPI devices within the specified number of seconds. The options are 0, 5, 10, 15, 20, 25, 30 and 35 (seconds).

  • Page 60: Boot Settings Configuration

    UPER P4QH8/P4QH6 User’s Manual Boot Settings Configuration Quick Boot This option allows the BIOS to skip certain tests that are normally perfomred on boot up. You can disable the option to speed up boot time. The settings are Disabled and Enabled.
  • Page 61 Chapter 4: AMIBIOS System Keyboard This option is to let the system know if a keyboard is Present or Absent. Primary Display This option specifies the type of monitor display you have installed on the system. The settings are Absent, VGA/EGA, Color 40 x 25, Color 80 x 25 and monochrome.

  • Page 62: Event Log Configuration

    UPER P4QH8/P4QH6 User’s Manual setting should be used to slow the computer system down or to trouble- shoot error messages. Write-Thru: This option allows the computer system to use the internal CPU L1 cache as Write-Though cache. Write-Through cache is slower than Write-Back cache. It performs write operations to the internal L1 CPU cache and system memory simultaneously.

  • Page 63: Peripheral Device Configuration

    Peripheral Device Configuration Power Lost Control This option determines how the system will respond when power is reap- plied after a power loss condition. start up the system when power is reapplied. Always Off means you must push the main power button to restart the system after power is restored. PME Wakeup This option allows you to Enable or Disable PME Wakeup.

  • Page 64: Chipset Setup

    UPER P4QH8/P4QH6 User’s Manual Chipset Setup Choose Chipset Setup from the AMIBIOS Setup Utility main menu. The screen is shown below. All Chipset Setup options are described following the screen. Advanced Chipset Main C000, 16k Shadow C400, 16k Shadow C800, 16k Shadow...
  • Page 65 Chapter 4: AMIBIOS for faster application. The settings for this option are Disabled and Enabled. (The optimal settings are Cached for C000, C400, C800 anc CC00 and Disabled for all the other addresses. Memory Timing Control Determines how the memory timing is controlled. Auto lets BIOS program the memory timing from SPD data.

  • Page 66: Pci Pnp Setup

    UPER P4QH8/P4QH6 User’s Manual PCI PnP Setup Choose PCI/PnP Setup from the AMIBIOS Setup main menu. All PCI/PnP options are described in this section. The PCI/PnP Setup screen is shown below. Main Advanced Chipset PCIPnP Plug & Play O/S Reset Config Data...
  • Page 67 Chapter 4: AMIBIOS Allocate IRQ to PCI VGA This option lets you allocate an interrupt request (IRQ) to the PCI VGA adapter card (if used). The settings are Yes and No. Palette Snooping When enabled, this option informs PCI devices that an ISA graphics device is installed.

  • Page 68: Power Setup

    UPER P4QH8/P4QH6 User’s Manual Power Setup Choose Power Setup from the AMIBIOS Setup main menu. All Power Setup options are described in this section. below. Main Advanced Chipset ACPI Aware O/S Power Management V02.03 (C)Copyright 1985-2002, American Megatrends, Inc. ACPI Aware O/S This option allows the system to utilize Intel's ACPI (Advanced Configuration and Power Interface) specification.
  • Page 69 Chapter 4: AMIBIOS Power Button Mode This option allows you to change the function of the chassis power button. The settings are On/Off and Suspend. When set to Suspend, depressing the power button when the system is up will cause it to enter a suspend state.

  • Page 70: Boot Setup

    UPER P4QH8/P4QH6 User’s Manual Boot Setup Choose Boot Setup from the AMIBIOS Setup main menu. options are described in this section. below. Main Advanced Chipset > Boot Device Priority > Hard Disk Drives > Removable Devices > ATAPI CDROM Drives V02.03 (C)Copyright 1985-2000, American Megatrends, Inc.
  • Page 71 3rd Boot Device The settings for the 3rd Boot Device are Removable Device, ATAPI CDROM, Hard Drive and Intel UNDI, PXE-2.0. 4th Boot Device The settings for the 4th Boot Device are Removable Device, ATAPI CDROM, Hard Drive and Intel UNDI, PXE-2.0. Hard Disk Drives Use this screen to view the hard drives that have been auto-detected or entered manually on your system.

  • Page 72: Security Setup

    UPER P4QH8/P4QH6 User’s Manual Security Setup Choose Security Setup from the AMIBIOS Setup main menu. All Security Setup options are described in this section. The Security Setup screen is shown below. Main Advanced Chipset Supervisor Password User Password > Change Supervisor Password >...
  • Page 73 Change Supervisor Password This option allows you to change a supervisor password that was entered previously. Change User Password This option allows you to change a user password that was entered previ- ously. Clear User Password Use this option to clear the user password so that it is not required to be entered when the system boots up.

  • Page 74: 4-10 Exit Setup

    UPER P4QH8/P4QH6 User’s Manual 4-10 Exit Setup Choose Exit Setup from the AMIBIOS Setup main menu. All Exit Setup op- tions are described in this section. The Exit Setup screen is shown below. Main Advanced Chipset > Exit Saving Changes >...
  • Page 75 Chapter 4: AMIBIOS Load Optimal Defaults Highlighting this setting and then pressing <Enter> provides the optimum performance settings for all devices and system features. Load Failsafe Defaults Highlighting this setting and then pressing <Enter> provides the safest set of parameters for the system. Use them if the system is behaving errati- cally.
  • Page 76 UPER P4QH8/P4QH6 User’s Manual Notes 4-26...

  • Page 77: Appendix Abios Error Beep Codes

    BIOS Error Beep Codes During the POST (Power-On Self-Test) routines, which are performed each time the system is powered on, errors may occur. Non-fatal errors are those which, in most cases, allow the system to continue the boot-up process. The error messages normally appear on the screen.
  • Page 78 UPER P4QH8/P4QH6 User’s Manual Notes...

  • Page 79: Appendix Bbios Post Checkpoint Codes

    BIOS POST Checkpoint Codes When AMIBIOS performs the Power On Self Test, it writes diagnostic codes checkpoint codes to I/O port 0080h. If the computer cannot complete the boot process, diagnostic equipment can be attached to the computer to read I/O port 0080h. Uncompressed Initialization Codes The uncompressed initialization checkpoint codes are listed in order of execution: Checkpoint...

  • Page 80: Bootblock Recovery Codes

    UPER P4QH8/P4QH6 User’s Manual Bootblock Recovery Codes The bootblock recovery checkpoint codes are listed in order of execution: Checkpoint Code Description The onboard floppy controller if available is initialized. Next, beginning the base 512 KB memory test. Initializing the interrupt vector table next.

  • Page 81: Appendix B: Bios Post Checkpoint Codes

    The CMOS status register is initialized. Next, performing any required initialization before the keyboard BAT command is issued. The keyboard controller input buffer is free. Next, issuing the BAT command to the keyboard controller. The keyboard controller BAT command result has been verified. Next, performing any necessary initialization after the keyboard controller BAT command test.
  • Page 82 UPER P4QH8/P4QH6 User’s Manual Checkpoint Code Description Interrupt vector initialization is done. Clearing the password if the POST DIAG switch is on. Any initialization before setting video mode will be done next. Initialization before setting the video mode is complete. Configuring the monochrome mode and color mode settings next.
  • Page 83 Checkpoint Code Description Patterns written in base memory. Determining the amount of memory below 1 MB next. The amount of memory below 1 MB has been found and verified. Determining the amount of memory above 1 MB memory next. The amount of memory above 1 MB has been found and verified. Checking for a soft reset and clearing the memory below 1 MB for the soft reset next.
  • Page 84 UPER P4QH8/P4QH6 User’s Manual Checkpoint Code Description The DMA page register test passed. Performing the DMA Controller 1 base register test next. The DMA controller 1 base register test passed. Performing the DMA controller 2 base register test next. The DMA controller 2 base register test passed. Programming DMA controllers 1 and 2 next.
  • Page 85 Checkpoint Code Description Initializing the bus option ROMs from C800 next. See the last page of this chapter for additional information. Initializing before passing control to the adaptor ROM at C800. Initialization before the C800 adaptor ROM gains control has com pleted.
  • Page 86 UPER P4QH8/P4QH6 User’s Manual Notes...

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