List of Phoenix AT ROM BIOS messages.                                 
( Courtesy of BIX )                                                                                
                                                                                
CONTENTS:                                                                       
         - FATAL SYSTEM BOARD BEEP CODES                                        
         - NON-FATAL SYSTEM BOARD BEEP CODES                                    
         - POST AND BOOT ERROR MESSAGES                                         
         - INFORMATIONAL MESSAGES                                               
         - RUN-TIME ERROR MESSAGES                                              
                                                                                
******************************************************************************* 
         - FATAL SYSTEM BOARD BEEP CODES                                        
The table below describes the beep codes and error codes that are               
written to Port 80h for fatal system board errors. These errors                 
will cause the system to halt.                                                  
Note:  No beep code is sounded if a test is aborted while in progress.          
       The contents of port 80h can be read to identify the area of failure.    
******************************************************************************* 
                                                                                
         BEEP     CONTENTS                                                      
         CODE     PORT 80h         DESCRIPTION                                  
                                                                                
         none       01h      CPU register test in progress                      
         1-1-3      02h      CMOS write/read failure                            
         1-1-4      03h      ROM BIOS checksum failure                          
         1-2-1      04h      Programmable Interval Timer failure                
         1-2-2      05h      DMA initialization failure                         
         1-2-3      06h      DMA page register write/read failure               
         1-3-1      08h      RAM refresh verification failure                   
         none       09h      1st 64K RAM test in progress                       
         1-3-3      0Ah      1st 64K RAM chip or data line failure multi-bit    
         1-3-4      0Bh      1st 64K RAM odd/even logic failure                 
         1-4-1      0Ch      Address line failure 1st 64K RAM                   
         1-4-2      0Dh      Parity failure 1st 64K RAM                         
         2-1-1      10h      Bit 0 1st 64K RAM failure                          
         2-1-2      11h      Bit 1 1st 64K RAM failure                          
         2-1-3      12h      Bit 2 1st 64K RAM failure                          
         2-1-4      13h      Bit 3 1st 64K RAM failure                          
         2-2-1      14h      Bit 4 1st 64K RAM failure                          
         2-2-2      15h      Bit 5 1st 64K RAM failure                          
         2-2-3      16h      Bit 6 1st 64K RAM failure                          
         2-2-4      17h      Bit 7 1st 64K RAM failure                          
         2-3-1      18h      Bit 8 1st 64K RAM failure                          
         2-3-2      19h      Bit 9 1st 64K RAM failure                          
         2-3-3      1Ah      Bit A 1st 64K RAM failure                          
         2-3-4      1Bh      Bit B 1st 64K RAM failure                          
         2-4-1      1Ch      Bit C 1st 64K RAM failure                          
         2-4-2      1Dh      Bit D 1st 64K RAM failure                          
         2-4-3      1Eh      Bit E 1st 64K RAM failure                          
         2-4-4      1Fh      Bit F 1st 64K RAM failure                          
         3-1-1      20h      Slave DMA register failure                         
         3-1-2      21h      Master DMA register failure                        
         3-1-3      22h      Master interrupt mask register failure             
         3-1-4      23h      Slave interrupt mask register failure              
         none       25h      Interrupt vector loading in progress               
         3-2-4      27h      Keyboard controller test failure                   
         none       28h      CMOS power failure and checksum                    
                                calculation in progress                         
         none       29h      CMOS configuration validation in progress          
         3-3-4      2Bh      Screen memory test failure                         
         3-4-1      2Ch      Screen initialization failure                      
         3-4-2      2Dh      Screen retrace test faulure                        
         none       2Eh      Search for video ROM in progress                   
         none       30h      Screen believed operable                           
         none       30h      Screen believed running with video ROM             
         none       31h      Monochrome monitor believed operable               
         none       32h      Color monitor (40 column) believed operable        
         none       33h      Color monitor (80 column) believed operable        
                                                                                
                                                                                
*****************************************************************************   
         - NON-FATAL SYSTEM BOARD BEEP CODES                                    
The table below describes the beep codes and error codes that are written       
to Port 80h for non-fatal system board errors.                                  
*****************************************************************************   
                                                                                
         BEEP     CONTENTS                                                      
         CODE     PORT 80h         DESCRIPTION                                  
                                                                                
         4-2-1      34h      No time tick                                       
         4-2-2      35h      Shutdown failure                                   
         4-2-3      36h      Gate A20 failure                                   
         4-2-4      37h      Unexpected interrupt in protected mode             
         4-3-1      38h      Memory high address line failure at                
                                 010000h - 0A0000h                              
         4-3-3      3Ah      Timer chip counter 2 failed                        
         4-3-4      3Bh      Time-of-day clock stopped                          
         4-4-1      3Ch      Serial port test failure                           
         4-4-2      3Dh      Parallel port test failure                         
         4-4-3      3Eh      Math coprocessor test failure                      
                                                                                
******************************************************************************* 
         - POST AND BOOT ERROR MESSAGES                                         
The table below lists the POST and boot error messages, and suggests possible   
causes and solutions for each message.                                          
******************************************************************************* 
   ___________________________________________________________________________  
   POST & BOOT MESSAGE      POSSIBLE CAUSE               SOLUTION               
   ===========================================================================  
   Diskette drive 0 seek    The A drive has either       Check the A drive      
   to track 0 failed        failed or is missing                                
                                                                                
   Diskette drive reset     The diskette adapter has     Check the diskette     
   failed                   failed                       adapter                
                                                                                
   Diskette read failure    The diskette is either not   Replace the diskete    
   - strike F1 to retry     formatted or is defective    with a bootable        
     boot                                                diskette and retry     
                                                         boot                   
                                                                                
   Display adapter failed;  - The color/monochrome       - Change the switch to 
   using alternate            switch is set wrong          the correct setting  
                            - The primary video adapter  - Check the  primary   
                              failed                       video adapter        
                                                                                
   Gate A20 failure         Protected mode cannot be     Most likely, the       
                            enabled                      problem is with the    
                                                         system board:  check   
                                                         the system board       
                                                                                
   Hard disk controller     The controller card has      Replace the controller 
   failure                  failed                       card                   
                                                                                
   Hard disk failure        Your winchester is           Check the flat cables; 
                            defective                    retry  boot.  If  that 
                                                         doesn't  work  replace 
                                                         hard disk              
                                                                                
   Hard disk read failure:  The working diskette or the  Retry boot. If that    
   Strike F1 to retry boot  hard disk is defective       doesn't  work, replace 
                                                         the diskette           
                                                                                
   Invalid configuration    - Memory size is configured  Run  the SETUP utility 
   information-- Please       wrong                      program                
   run SETUP program                                                            
                            - Display adapter is                                
                              configured wrong                                  
                                                                                
                            - Wrong number of diskette                          
                              drives                                            
                                                                                
   Keyboard clockline       Either the  keyboard or the  Make sure the keyboard 
   failure                  the keyboard cable           is connected properly; 
                            connection is defective      if your keyboard is    
   Keyboard dataline                                     switchable XT/AT check 
   failure                                               the switch             
                                                                                
   Keyboard controller      The keyboard controller      Check the keyboard     
   failure                  firmware has failed          controller             
                                                                                
   Keyboard is locked:      The keyboard lock located                           
   Please unlock            at the front of the                                 
                            computer is activated                               
                                                                                
   Keyboard stuck key       A key(s) is jammed           Try pressing the       
   failure                                               key(s) again           
                                                                                
   Memory address line      Circuitry associated with    Check the circuitry    
   failure at hex-value,    the memory chips has failed                         
   read hex-value                                                               
   expecting hex-value                                                          
                                                                                
   Memory data line         One of  the memory chips or  Try replacing the      
   failure at hex-value     associated circuitry has     memory chips           
   read hex-value -- hex-   failed                                              
   value                                                                        
                                                                                
   Memory high address      Circuitry associated with    Check the circuitry    
   line failure at hex-     the memory chips has failed                         
   value -- hex-value                                                           
                                                                                
   Memory odd/even logic    Circuitry associated with    Check the circuitry    
   failure at hex-value     memory chips has failed                             
   read hex-value                                                               
   expexting hex-value                                                          
                                                                                
   Memory parity failure    One of the memory chips has  Try replacing the      
   at hex-value--hex-       failed                       memory chips           
   value                                                                        
                                                                                
   Memory write/read        One of the memory chips has  Try replacing the      
   failure at hex-value     failed                       memory chips           
   read hex-value                                                               
   expecting hex-value                                                          
                                                                                
   No boot device           Either diskette drive A:,    Retry boot. If that    
   available--strike F1     the hard disk, or the        doesn't work, replace  
   to retry boot            diskette itself is           the floppy diskette or 
                            defective                    the hard disk          
                                                                                
   No boot sector on hard   The C:drive is not           Format the C: drive    
   disk--strike F1 to       formatted                                           
   retry boot                                                                   
                                                                                
   No timer tick            The timer chip has failed    Check the timer chip   
                                                         in the system board    
                                                                                
   Not a boot diskette --   The diskette in drive A: is  Replace the diskette   
   strike F1 to retry boot  not formatted as a bootable  with a bootable        
                            diskette                     diskette and retry     
                                                         boot                   
                                                                                
   Hex-value Optional ROM   The peripheral card          Replace the peripheral 
   bad Checksum = hex-      contains a defective ROM     card                   
   value                                                                        
                                                                                
   Shutdown failure         The Keyboard controller or   Check the keyboard     
                            its associated logic has     controller             
                            failed                                              
                                                                                
   Time-of-day clock        The CMOS Time-of-day clock   Run the SETUP utility  
   stopped                  chip has failed                                     
                                                                                
   Timer chip counter 2                                  Check  the  timer chip 
   failed                                                system board           
                                                                                
   Timer or interrupt       Either the timer chip or     Check the timer chip   
   controller bad           the Interrupt Controller is  of the Interrupt       
                            defective                    controller on the      
                                                         system board           
                                                                                
   Unexpected interrupt in  The non-maskable interrupt   Check the system       
   protected mode           (NMI) port can't be          board, particularly    
                            disabled                     the logic associated   
                                                         with the non-maskable  
                                                         interrupt              
                                                                                
********************************************************************************
         - POST INFORMATIONAL MESSAGES                                          
The table below lists the POST information messages and their meanings.         
********************************************************************************
   ____________________________________________________                         
   INFORMATIONAL MESSAGE      MEANING                                           
   ====================================================                         
   Hex-value Base Memory,     Indicates the amount of                           
   hex-value Expansion        memory that has tested                            
                              successfully                                      
                                                                                
   Decreasing available       Immediately follows any                           
   memory                     memory error message, and                         
                              informs you that the memory                       
                              chips are failing                                 
                                                                                
   Memory test terminated     Indicates that you have                           
   by keystroke               pressed the Spacebar while                        
                              the memory tests were                             
                              running. This stops the                           
                              memory tests.                                     
                                                                                
   Phoenix 80286 ROM BIOS     This copyright message is                         
   Version X.X Copyright      displayed on the initial                          
   1985, 1986,1987            boot screen and indicates                         
   Phoenix  Tech All          that POST has started                             
   Rights Reserved                                                              
                                                                                
   Strike the F1 key to       This message indicates that                       
   continue                   an error was found during                         
                              POST. Pressing the F1 key                         
                              allows the system to                              
                              attempt to boot                                   
                                                                                
***************************************************************************     
         - RUN-TIME ERROR MESSAGES                                              
Run-time messages are displayed if an error occurs after the                    
boot procedure is complete.  The table below gives possible                     
causes and solutions for the run-time messages.                                 
****************************************************************************    
   ___________________________________________________________________________  
   RUN-TIME MESSAGE             POSSIBLE CAUSE               SOLUTION           
   ===========================================================================  
   I/O card parity          The peripheral card has      Type (S)hut off NMI    
   interrupt at address.    failed                                              
   Type (S)hut off NMI.                                  Note: This will        
   (R)eboot, other keys to                               temporatiry allow you  
   continue                                              to continue. You must  
                                                         replace the peripheral 
                                                         card                   
                                                                                
   Memory parity interrupt  A memory chip(s) has failed  Type (S)hut off NMI    
   at address. Type (S)hut                                                      
   off NMI. (R)eboot,                                    Note: This  will only  
   other keys to continue                                temporarily allow you  
                                                         to  continue.You must  
                                                         replace the memory     
                                                         chips(s).              
                                                                                
   Unexpected HW interrupt  This could be any hardware   Check the hardware     
   at address. Type (S)hut  related problem.                                    
   off NMI,(R)eboot,        Note: This message will not                         
   other keys to continue   be displayed if INTENHD is                          
                            false                                               
                                                                                
   Unexpected SW interrupt  There is an error(s) in the  Try turning the        
   at address. Type (S)hut  software program.            machine off and then   
   off NMI, (R)eboot,       Note: This message will not  on again. If that      
   other keys to continue   be displayed if INTENHD is   doesn't work, check    
                            false                        the program.           
                                                                                
   Unexpected type 02       There is an error(s) in the  Try turning the        
   interrupt at address.    software program.            machine off and then   
   Type (S)hut off  NMI,                                 on again. If that      
   (R)eboot, other keys to  Note: This message will not  doesn't work, check    
   continue                 be displayed  if INTENHD is  the program            
                            false.                                              
