ࡱ; =>  !"#$%&'()*+,-./0123456789:;<?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyRoot Entry FgCompObjbWordDocumentObjectPoolgg 4@   FMicrosoft Word 6.0 Document MSWordDocWord.Document.6;  Oh+'0$ H l   D h*C:\MSOFFICE\WINWORD\TEMPLATE\refsmall.dot American Megatrends, Inc.adamsadams@ܥe3 e can also appear with displayed error messages. Beep Codes XE "Beep Codes"  xe "Beep Codes"xe "BIOS: Beep Codes"xe "BIOS: Fatal error messages"Fatal errors, which halt the boot process, are communicated through a series of audible beeps. If AMIBIOS POST can initialize the system video display, it displays the error message. Displayed error messages, in most cases, allow the system to continue to boot. Displayed error messages are described on page pageref NON_FATAL_ERROR4. Beeps Error message Description1xe "Refresh Failure"Refresh FailureThe memory refresh circuitry is faulty.2xe "Parity Error"xe "Parity Error"Parity ErrorParity error in the base memory (the first 64 KB block) of memory.3xe "Base 64 KB Memory Failure"Base 64 KB Memory FailureMemory failure in first 64 KB.4xe "Timer Not Operational"Timer Not OperationalA memory failure in the first 64 KB of memory, or Timer 1 is not functioning.5xe "Processor error"Processor ErrorThe CPU generated an error.6xe "8042 - Gate A20 Failure"8042 - Gate A20 FailureCannot switch to protected mode.7xe "Processor Exception Interrupt Error"Processor Exception Interrupt ErrorThe CPU on the CPU Card generated an exception interrupt.8xe "Display Memory Read/Write Error"Display Memory Read/Write ErrorThe system video adapter is either missing or its memory is faulty. This is not a fatal error.9xe "ROM Checksum Error"ROM Checksum ErrorThe ROM checksum value does not match the value encoded in AMIBIOS.10xe "CMOS Shutdown Register Read/Write Error"CMOS Shutdown Register Read/Write ErrorThe shutdown register for CMOS RAM has failed.11Cache Memory Bad Do Not Enable CacheThe cache memory test failed. Cache memory is disabled. Do not press <+> to enable cache memory. Troubleshooting System Problems XE "Troubleshooting BIOS System Problems"  If the Computer Beeps If it beeps... then...1, 2, or 3 times...reseat the memory SIMMs or DIPs. If the system still beeps, replace the memory.6 times...reseat the keyboard controller chip. If it still beeps, replace the keyboard controller. If it still beeps, try a different keyboard, or replace the keyboard fuse, if the keyboard has one.8 times...there is a memory error on the video adapter. Replace the video adapter, or the RAM on the video adapter.9 times...the BIOS ROM chip is bad. The system probably needs a new BIOS ROM chip.11 times...reseat the cache memory on the motherboard. If it still beeps, replace the cache memory.4, 5, 7, or 10 times...the motherboard must be replaced. AMIBIOS Displayed Error Messages XE "AMIBIOS Displayed Error Messages"  If an error occurs after the system display has been initialized, the error message are displayed as follows: ERROR Message Line 1 ERROR Message Line 2 Press to continue and the system halts. The system does not halt if Wait for If Any Error in Advanced Setup is Disabled. RUN SETUP UTILITY. can also appear. Press to run WINBIOS Setup if this message appears. Error Message Explanationxe "8042 Gate-A20 Error"8042 Gate-A20 ErrorGate A20 on the keyboard controller (8042) is not working. Replace the 8042.xe "Address Line Short!"Address Line Short!Error in the address decoding circuitry.xe "C\: Drive Error"C: Drive ErrorNo response from drive C:. Run the AMIDiag Hard Disk Utility. Check the C: hard disk type in Standard Setup.xe "C\: Drive Failure"C: Drive FailureNo response from hard disk drive C:. Replace the drive.xe "Cache Memory Bad, Do Not Enable Cache!"Cache Memory Bad, Do Not Enable Cache!Cache memory is defective. Run AMIDiag.xe "CH-2 Timer Error"CH-2 Timer ErrorAn AT system has two timers. There is an error in timer 2.xe "CMOS Battery State Low"CMOS Battery State LowCMOS RAM is powered by a battery. The battery power is low. Replace the battery.xe "CMOS Checksum Failure"CMOS Checksum FailureCMOS RAM checksum is different than the previous value. Run WINBIOS Setup.xe "CMOS System Options Not Set"CMOS System Options Not SetThe values stored in CMOS RAM have been destroyed. Run WINBIOS Setup.xe "CMOS Display Type Mismatch"CMOS Display Type MismatchThe video type in CMOS RAM does not match the type detected. Run WINBIOS Setup.xe "CMOS Memory Size Mismatch"CMOS Memory Size MismatchThe amount of memory found by AMIBIOS is different than the amount in CMOS RAM. Run WINBIOS Setup.xe "CMOS Time & Date Not Set"CMOS Time and Date Not SetRun Standard Setup to set the date and time.xe "D\: Drive Error"D: Drive ErrorNo response from drive D:. Run the AMIDiag Hard Disk Utility. Check the hard disk type in Standard Setup.xe "D\: drive failure"D: drive failureNo response from hard disk drive D:. Replace the drive.xe "Diskette Boot Failure"Diskette Boot FailureThe boot diskette in drive A: cannot be used to boot the system. Use another boot diskette and follow the screen instructions.xe "Display Switch Not Proper"Display Switch Not ProperSome systems require a video switch be set to either color or monochrome. Turn the system off, set the switch properly, then power on.xe "DMA Error"DMA ErrorError in the DMA controller.xe "DMA #1 Error"DMA 1 ErrorError in the first DMA channel.xe "DMA #2 Error"DMA 2 ErrorError in the second DMA channel.xe "FDD Controller Failure"FDD Controller FailureAMIBIOS cannot communicate with the floppy disk drive controller. Check all appropriate connections after the system is powered down.xe "HDD Controller Failure"HDD Controller FailureAMIBIOS cannot communicate with the hard disk drive controller. Check all appropriate connections after the system is powered down.xe "INTR #1 Error"INTR1 ErrorInterrupt channel 1 failed POST.xe "INTR #2 Error"INTR2 ErrorInterrupt channel 2 failed POST.xe "Invalid Boot Diskette"Invalid Boot DisketteAMIBIOS can read the diskette in floppy drive A:, but it cannot boot the system with it. Use another boot diskette and follow the screen instructions.xe "Keyboard Is Locked...Unlock It"Keyboard Is Locked...Unlock ItThe keyboard lock on the system is engaged. The system must be unlocked to continue to boot.xe "Keyboard Error"Keyboard ErrorThe keyboard has a timing problem. Make sure a Keyboard Controller AMIBIOS is installed. Set Keyboard in Advanced Setup to Not Installed to skip the keyboard POST routines.xe "KB/Interface Error"KB/Interface ErrorThere is an error in the keyboard connector.xe "No ROM BASIC"No ROM BASICCannot find a proper bootable sector on either drive A: or C:. AMIBIOS cannot find ROM Basic.xe "Off Board Parity Error"Off Board Parity ErrorParity error in memory installed on an adapter card in an expansion slot. The format is: OFF BOARD PARITY ERROR ADDR = (XXXX) XXXX is the hex address where the error occurred. Run AMIDiag to find and correct memory problems.xe "On Board Parity Error"On Board Parity ErrorParity error in motherboard memory. The format is: ON BOARD PARITY ERROR ADDR = (XXXX) XXXX is the hex address where the error occurred. Run AMIDiag to find and correct memory problems.xe "Parity Error ????"Parity Error ????Parity error in system memory at an unknown address. Run AMIDiag to find and correct memory problems.  POST Memory Test XE "POST Memory Test"  Normally, the only visible POST routine is the memory test. The screen that appears when the system is powered on is shown below. AMIBIOS (C) 1995 American Megatrends Inc. XXXXX KB OK Hit if you want to run SETUP (C) American Megatrends Inc. XX-XXXX-XXXXXX-XXXXXXXX-XXXXXX-XXXX-XAn AMIBIOS Identification string XE "AMIBIOS Identification string"  is displayed at the left bottom corner of the screen, below the copyright message. Press during system boot to display two additional AMIBIOS Identification strings. AMIBIOS Identification Strings show the options installed in AMIBIOS. You will need this information when calling for technical support. Displaying Additional AMIBIOS ID Strings Step Action1Enable xe "Wait for If any Error"Wait for If any Error in Advanced Setup to Enabled before freezing the screen.2When a problem occurs, freeze the screen by powering on the system and holding a key down on the keyboard to cause a Keyboard Error message.3Copy the three lines and report this information to American Megatrends. Press to continue the boot process.The following appears after POST completes: xe "Hit if you want to run SETUP"Hit if you want to run SETUP Press to access WINBIOS Setup. EISA BIOS Error Messages XE "EISA BIOS Error Messages"  An EISA AMIBIOS can generate additional error messages. None of these messages is fatal. The EISA AMIBIOS error messages are: Error Message ExplanationEISA CMOS Checksum FailureThe Checksum for EISA CMOS is bad. The battery for EISA CMOS RAM can be bad.EISA CMOS InoperationalA Read/Write error occurred in extended CMOS RAM. The battery may be bad.Expansion Board Not Ready at Slot X, Y, ZAMIBIOS cannot find the expansion board in Slot X, Y, or Z. Make sure the board is in the correct slot and is correctly seated.Fail-Safe Timer NMI InoperationalDevices that depend on the fail-safe NMI timer is not operating correctly.ID Information Mismatch for Slot X, Y, Z.The ID of the EISA Expansion Board in Slot X, Y, or Z does not match the ID in EISA CMOS RAM.Invalid Configuration Information for Slot X, Y, Z.The configuration information for EISA Expansion Boards X, Y, or Z is not correct. The board cannot be configured. Run the ECU.Software Port NMI InoperationalThe software port NMI is not working. ISA NMI Handler Messages XE "ISA NMI Handler Messages"  ISA NMI Message ExplanationMemory Parity Error at xxxxxMemory failed. If the memory location can be determined, it is displayed as xxxxx. If not, the message is Memory Parity Error ????.I/O Card Parity Error at xxxxxAn expansion card failed. If the address can be determined, it is displayed as xxxxx. If not, the message is I/O Card Parity Error ????.DMA Bus Time-outA device has driven the bus signal for more than 7.8 microseconds. EISA AMIBIOS NMI Error Messages XE "EISA AMIBIOS NMI Error Messages"  The EISA AMIBIOS can generate additional NMI messages that are specific to EISA systems. EISA NMI Message ExplanationBUS Timeout NMI at Slot nThere was a Bus Timeout NMI at Slot n.(E)nable (D)isable Expansion Board?Type E to enable the expansion board that had an NMI or D to disable it.Expansion Board Disabled at Slot nThe expansion board in Slot n has been disabled.Expansion Board NMI at Slot nAn expansion board NMI was generated from Slot n.Fail-Safe Timer NMIA fail-safe timer NMI has been generated.Software Port NMIA software port NMI has been generated. AMIBIOS Configuration Screen XE "AMIBIOS Configuration Screen"  AMIBIOS displays a screen that looks similar to the following when the POST routines complete successfully. AMIBIOS System Configuration (C) Copyright 1985-95 American Megatrends Inc. Main Processor Numeric Coprocessor Floppy Drive A: Floppy Drive B: ROM-BIOS Date:  : Pentium : Present : 1.2 MB : 1.44 MB : 07/15/95 Base Memory Size Ext. Memory Size Display Type Serial Port(s) Parallel Port(s) : 640 KB : 7808 KB : EGA/VGA : 3F8 : 378 POST Checkpoint Codes XE "Checkpoint Codes"  XE "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. The following AMIBIOS POST checkpoint codes are valid for all AMIBIOS products with a core BIOS date of 7/15/95 (Enhanced). Uncompressed Initialization Codes XE "Uncompressed Initialization Checkpoint Codes"  The uncompressed initialization checkpoint codes are listed in order of execution: Checkpoint CodeDescriptionD0hThe NMI is disabled. Power on delay is starting. Next, the initialization code checksum will be verified.D1hInitializing the DMA controller, performing the keyboard controller BAT test, starting memory refresh, and entering 4 GB flat mode next.D3hStarting memory sizing next. D4hReturning to real mode. Executing any OEM patches and setting the stack next.D5hPassing control to the uncompressed code in shadow RAM at E000:0000h.The initialization code is copied to segment 0 and control will be transferred to segment 0.D6hControl is in segment 0. Next, checking if was pressed and verifying the system BIOS checksum. If either was pressed or the system BIOS checksum is bad, next will go to checkpoint code E0h. Otherwise, going to checkpoint code D7h. Contd POST Checkpoint Codes, Continued Bootblock Recovery Codes XE "Bootblock Recovery Checkpoint Codes"  The bootblock recovery checkpoint codes are listed in order of execution: Checkpoint CodeDescriptionE0hThe onboard floppy controller if available is initialized. Next, beginning the base 512 KB memory test.E1hInitializing the interrupt vector table next.E2hInitializing the DMA and Interrupt controllers next.E6hEnabling the floppy drive controller and Timer IRQs. Enabling internal cache memory.EDhInitializing the floppy drive.EEhLooking for a floppy diskette in drive A:. Reading the first sector of the diskette.EFhA read error occurred while reading the floppy drive in drive A:.F0hNext, searching for the AMIBOOT.ROM file in the root directory.F1hThe AMIBOOT.ROM file is not in the root directory.F2hNext, reading and analyzing the floppy diskette FAT to find the clusters occupied by the AMIBOOT.ROM file.F3hNext, reading the AMIBOOT.ROM file, cluster by cluster.F4hThe AMIBOOT.ROM file is not the correct size.F5hNext, disabling internal cache memory.FBhNext, detecting the type of flash ROM.FChNext, erasing the flash ROM.FDhNext, programming the flash ROM.FFhFlash ROM programming was successful. Next, restarting the system BIOS. Uncompressed Initialization Codes XE "Uncompressed Initialization Checkpoint Codes"  The following runtime checkpoint codes are listed in order of execution. These codes are uncompressed in F0000h shadow RAM. Checkpoint CodeDescription03hThe NMI is disabled. Next, checking for a soft reset or a power on condition.05hThe BIOS stack has been built. Next, disabling cache memory. 06hUncompressing the POST code next.07hNext, initializing the CPU and the CPU data area.08hThe CMOS checksum calculation is done next.0AhThe CMOS checksum calculation is done. Initializing the CMOS status register for date and time next.0BhThe CMOS status register is initialized. Next, performing any required initialization before the keyboard BAT command is issued.0ChThe keyboard controller input buffer is free. Next, issuing the BAT command to the keyboard controller.0EhThe keyboard controller BAT command result has been verified. Next, performing any necessary initialization after the keyboard controller BAT command test.0FhThe initialization after the keyboard controller BAT command test is done. The keyboard command byte is written next.10hThe keyboard controller command byte is written. Next, issuing the Pin 23 and 24 blocking and unblocking command.11hNext, checking if keys were pressed during power on. Initializing CMOS RAM if the Initialize CMOS RAM in every boot AMIBIOS POST option was set in AMIBCP or the key was pressed.12hNext, disabling DMA controllers 1 and 2 and interrupt controllers 1 and 2.13hThe video display has been disabled. Port B has been initialized. Next, initializing the chipset.14hThe 8254 timer test will begin next. 19hThe 8254 timer test is over. Starting the memory refresh test next.1AhThe memory refresh line is toggling. Checking the 15 second on/off time next.23hReading the 8042 input port and disabling the MEGAKEY Green PC feature next. Making the BIOS code segment writable and performing any necessary configuration before initializing the interrupt vectors.24hThe configuration required before interrupt vector initialization has completed. Interrupt vector initialization is about to begin.25hInterrupt vector initialization is done. Clearing the password if the POST DIAG switch is on.27hAny initialization before setting video mode will be done next.28hInitialization before setting the video mode is complete. Configuring the monochrome mode and color mode settings next.2AhBus initialization system, static, output devices will be done next, if present. See page  PAGEREF _Ref338148317 15 for additional information.2BhPassing control to the video ROM to perform any required configuration before the video ROM test.2ChAll necessary processing before passing control to the video ROM is done. Looking for the video ROM next and passing control to it.2DhThe video ROM has returned control to BIOS POST. Performing any required processing after the video ROM had control.2EhCompleted post-video ROM test processing. If the EGA/VGA controller is not found, performing the display memory read/write test next.2FhThe EGA/VGA controller was not found. The display memory read/write test is about to begin.30hThe display memory read/write test passed. Look for retrace checking next.31hThe display memory read/write test or retrace checking failed. Performing the alternate display memory read/write test next.32hThe alternate display memory read/write test passed. Looking for alternate display retrace checking next.34hVideo display checking is over. Setting the display mode next.37hThe display mode is set. Displaying the power on message next.38hInitializing the bus input, IPL, general devices next, if present. See page  PAGEREF _Ref338148317 15 for additional information.39hDisplaying bus initialization error messages. See page  PAGEREF _Ref338148317 15 for additional information.3AhThe new cursor position has been read and saved. Displaying the Hit message next.3BhThe Hit message is displayed. The protected mode memory test is about to start.40hPreparing the descriptor tables next.42hThe descriptor tables are prepared. Entering protected mode for the memory test next.43hEntered protected mode. Enabling interrupts for diagnostics mode next.44hInterrupts enabled if the diagnostics switch is on. Initializing data to check memory wraparound at 0:0 next.45hData initialized. Checking for memory wraparound at 0:0 and finding the total system memory size next.46hThe memory wraparound test is done. Memory size calculation has been done. Writing patterns to test memory next.47hThe memory pattern has been written to extended memory. Writing patterns to the base 640 KB memory next.48hPatterns written in base memory. Determining the amount of memory below 1 MB next.49hThe amount of memory below 1 MB has been found and verified. Determining the amount of memory above 1 MB memory next.4BhThe 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. If this is a power on situation, going to checkpoint 4Eh next.4ChThe memory below 1 MB has been cleared via a soft reset. Clearing the memory above 1 MB next.4DhThe memory above 1 MB has been cleared via a soft reset. Saving the memory size next. Going to checkpoint 52h next.4EhThe memory test started, but not as the result of a soft reset. Displaying the first 64 KB memory size next.4FhThe memory size display has started. The display is updated during the memory test. Performing the sequential and random memory test next.50hThe memory below 1 MB has been tested and initialized. Adjusting the displayed memory size for relocation and shadowing next.51hThe memory size display was adjusted for relocation and shadowing. Testing the memory above 1 MB next.52hThe memory above 1 MB has been tested and initialized. Saving the memory size information next.53hThe memory size information and the CPU registers are saved. Entering real mode next.54hShutdown was successful. The CPU is in real mode. Disabling the Gate A20 line, parity, and the NMI next.57hThe A20 address line, parity, and the NMI are disabled. Adjusting the memory size depending on relocation and shadowing next.58hThe memory size was adjusted for relocation and shadowing. Clearing the Hit message next.59hThe Hit message is cleared. The message is displayed. Starting the DMA and interrupt controller test next.60hThe DMA page register test passed. Performing the DMA Controller 1 base register test next.62hThe DMA controller 1 base register test passed. Performing the DMA controller 2 base register test next.65hThe DMA controller 2 base register test passed. Programming DMA controllers 1 and 2 next.66hCompleted programming DMA controllers 1 and 2. Initializing the 8259 interrupt controller next.67hCompleted 8259 interrupt controller initialization.7FhExtended NMI source enabling is in progress.80hThe keyboard test has started. Clearing the output buffer and checking for stuck keys. Issuing the keyboard reset command next.81hA keyboard reset error or stuck key was found. Issuing the keyboard controller interface test command next.82hThe keyboard controller interface test completed. Writing the command byte and initializing the circular buffer next.83hThe command byte was written and global data initialization has completed. Checking for a locked key next.84hLocked key checking is over. Checking for a memory size mismatch with CMOS RAM data next.85hThe memory size check is done. Displaying a soft error and checking for a password or bypassing WINBIOS Setup next.86hThe password was checked. Performing any required programming before WINBIOS Setup next.87hThe programming before WINBIOS Setup has completed. Uncompressing the WINBIOS Setup code and executing the AMIBIOS Setup or WINBIOS Setup utility next.88hReturned from WINBIOS Setup and cleared the screen. Performing any necessary programming after WINBIOS Setup next.89hThe programming after WINBIOS Setup has completed. Displaying the power on screen message next.8BhThe first screen message has been displayed. The message is displayed. Performing the PS/2 mouse check and extended BIOS data area allocation check next.8ChProgramming the WINBIOS Setup options next.8DhThe WINBIOS Setup options are programmed. Resetting the hard disk controller next.8FhThe hard disk controller has been reset. Configuring the floppy drive controller next.91hThe floppy drive controller has been configured. Configuring the hard disk drive controller next.95h Initializing the bus option ROMs from C800 next. See page  PAGEREF _Ref338148317 15 for additional information.96hInitializing before passing control to the adaptor ROM at C800.97hInitialization before the C800 adaptor ROM gains control has completed. The adaptor ROM check is next.98hThe adaptor ROM had control and has now returned control to BIOS POST. Performing any required processing after the option ROM returned control.99hAny initialization required after the option ROM test has completed. Configuring the timer data area and printer base address next.9AhSet the timer and printer base addresses. Setting the RS-232 base address next.9BhReturned after setting the RS-232 base address. Performing any required initialization before the Coprocessor test next.9ChRequired initialization before the Coprocessor test is over. Initializing the Coprocessor next.9DhCoprocessor initialized. Performing any required initialization after the Coprocessor test next.9EhInitialization after the Coprocessor test is complete. Checking the extended keyboard, keyboard ID, and Num Lock key next. Issuing the keyboard ID command next.A2h Displaying any soft errors next.A3hThe soft error display has completed. Setting the keyboard typematic rate next.A4hThe keyboard typematic rate is set. Programming the memory wait states next.A5hMemory wait state programming is over. Clearing the screen and enabling parity and the NMI next.A7hNMI and parity enabled. Performing any initialization required before passing control to the adaptor ROM at E000 next.A8hInitialization before passing control to the adaptor ROM at E000h completed. Passing control to the adaptor ROM at E000h next.A9hReturned from adaptor ROM at E000h control. Performing any initialization required after the E000 option ROM had control next.AAhInitialization after E000 option ROM control has completed. Displaying the system configuration next.ABhUncompressing the DMI data and executing DMI POST initialization next.B0hThe system configuration is displayed.B1hCopying any code to specific areas.00hCode copying to specific areas is done. Passing control to INT 19h boot loader next. Bus Checkpoint Codes XE "Bus Checkpoint Codes"  The system BIOS passes control to different buses at the following checkpoints: Checkpoint CodeDescription2AhInitializing the different bus system, static, and output devices, if present.38hInitialized bus input, IPL, and general devices, if present.39hDisplaying bus initialization error messages, if any.95hInitializing bus adaptor ROMs from C8000h through D8000h. Additional Bus Checkpoints While control is in the bus routines, additional checkpoints are output to I/O port address 0080h as word to identify the routines being executed. These are word checkpoints. The low byte of checkpoint is the system BIOS checkpoint where control is passed to the different bus routines. The high byte of checkpoint indicates that the routine is being executed in different buses. High Byte The high byte of these checkpoints includes the following information: BitsDescriptionBits 7-40000 Function 0. Disable all devices on the bus. 0001 Function 1. Initialize static devices on the bus. 0010 Function 2. Initialize output devices on the bus. 0011 Function 3. Initialize input devices on the bus. 0100 Function 4. Initialize IPL devices on the bus. 0101 Function 5. Initiate general devices on the bus. 0110 Function 6. Initialize error reporting on the bus. 0111 Function 7. Initialize add-on ROMs for all buses.Bits 3-0Specify the bus 0 Generic DIM Device Initialization Manager. 1 Onboard System devices. 2 ISA devices. 3 EISA devices. 4 ISA PnP devices. 5 PCI devices.   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