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Appendix A  

 

(1E)Select memory type. 

 

(1E)Global equipment byte set for proper display type. 

 

(1E)If EISA NVM checksum is good, execute EISA initialization(EISA BIOS ONLY). Size 
system memory. 

 

(1E)Test keyboard controller. 

 

ACER  
AMI  
Award  

 

Compaq  
Phoenix&Dell (1E)[Beep]=2-4-3 1st 64K RAM chip or data line failure- bit E.Base 64K RAM  

test(16 bits).  

Error Code - 1F  

AMI  

Award  
Compaq  

(1F)Video mode set call for mono/color begins. Mode set call for mono/color OK.  
Set EISA mode; If EISA non- volatile memory checksum is good, execute EISA initialization. 
If not, execute ISA test an clear EISA mode flag. Test EISA configuration memory 
integrity(checksum & comm.- unication interface).  
(1F)Test system memory.  
(1F)Test 286 protected mode.  

Phoenix&Dell (1F)[Beep]=2-4-4 1st 64K RAM chip or data line failure- bit F.  

ACER  
AMI  

 

 

AST  
Award  

 

Compaq  

Error Code - 20  
(20)Test 128K.  
(20)Memory refresh period 30 micro second test complete. Base 64K memory/address test 
started. Address line test to be done next. Video mode set  
completed.  
(20)Power up bus board(EISA only).  
(20)Enable slot 0;Initialize slot 0(system board).(Check memory size).8259 stuck  
bits test.  
(20)Test real and extended memory.  

Phoenix&Dell (20)[Beep]=3-1-1 master DMA register test in-progress or failure. Test DRAM  

refresh.(Beep)=1-3-1-1. Upper 16 of 32 bit test failed.  

AMI  

 

Award  

 

Compaq  

Error Code - 21  
(21)Address line test passed. Going to do toggle parity. (21)ROM type 27256 verified. Video 
display OK.  
(21)Enable slots 1 through 15;Initialize slot 1.Test stuck NMI bits (parity I/O  
check).  
(21)Init time-of-day.  

Phoenix&Dell (21)[Beep]=3-1-2 slave DMA register test in-progress or failure.  

AMI  

 

Award  
Compaq  

Error Code - 22  
(22)Toggle parity over. Going for sequential data R/W test on 64K memory. Power  
on message display OK.  
(22)Enable slots 2; Initialize slot 2.Test 8259 working.  
(22)Init 287 Coprocessor.  

Phoenix&Dell (22)[Beep]=3-1-3 master interrupt mask register test in- progress or fail. Test 8742  

keyboard controller.(Beep)=1- 3-1-3  

AMI  

 

Award  
Compaq  

Error Code - 23  
(23)Base 64K sequential data R/W test passed. Going to SET BIOS stack and to do  
any setup before Interrupt vector Init. Any setup before interrupt vector Init about to  
start. Power on message displayed.  
(23)Enable slots 3;Initialize slot 3.Test protected mode.  
(23)Test keyboard and interface.  

Phoenix&Dell [Beep]=3-1-4 slave interrupt mask register test in-progress or fail.  

ACER  
AMI  

 

Award  
Compaq  
Phoenix  

 

 

AMI  

 

Award  
Compaq  

Error Code - 24  

(24)Test keyboard controller(8042).  
(24)Setup required before vector initialization complete. Interrupt vector initialization about to 
begin.  
(24)Enable slots 4;Initialize slot 4.Size extended memory.  
(24)reset A20 ads set default CPU speed.  
(24)Set ES segment to register to 4 GB.(beep)=1-3-2-1. Verify CMOS/Configure  
CMOS.  

Error Code - 25  

(25)Interrupt vector initialization done. Going to read Input port of 9042 for turbo  
switch(if any).Going to read I/O port of 8042 for turbo switch(if any).  
(25)Enable slots 5;Initialize slot 5.Test extended memory.  
(25)Test diskette subsystem.  

Phoenix&Dell (25)[Beep]=none interrupt vector loading in-progress.  

AMI  

 

Award  
Compaq 
Phoenix 6.0  

 

AMI  

Error Code - 26  

(26)I/O port of 8042 is read. Going to initialize global data for turbo switch. Going  
to initialize global data for turbo switch.  
(26)Enable slots 6;Initialize slot 6.Test protected mode exceptions.  
(26)Test fixed disk subsystem.  
(26)Enable A20 line. Verify/Load NVRAM parameters.  

Error Code - 27  

(27)Global data initialization for turbo switch is over. Any initialization before  
setting video mode to be done next.  

 

10 

 

Summary of Contents for Mega-Post

Page 1: ...User s Guide Mega Post PCI Diagnostic Card User s Guide 1 ...

Page 2: ...erhorst with all rights reserved IBM PC PCjr IBM PC XT IBM AT and PS 2 are trademarks of international Business Machines Co Inc Pentium is a trademark of Intel Corporation System Requirements The Mega Post PCI Diagnostic Card itself only requires an empty PCI or ISA expansion slot It is not necessary to install memory chips to perform analysis POST Codes can be displayed through the hexadecimal di...

Page 3: ...detected Reset After power on or reset this indicator should be on for an half second and then turned off Power Supply 12 Volt Positive Should be on all the time otherwise there is a short circuit Power Supply 12 Volt Negative Should be on all the time otherwise there is a short circuit Power Supply 5 Volt Positive Should be on all the time otherwise there is a short circuit Power Supply 5 Volt Ne...

Page 4: ...n Self Test POST codes begin displaying on the Diagnostic Card s hexadecimal displays for most machines NOTE A few machines use the parallel port to display POST codes instead of the Diagnostic Card THE POST PROCESS The ROM built onto the motherboard of the computer rums its built in POST Power On Self Test when you switch power on to the computer press the reset button on the computer or press Ct...

Page 5: ...enix AMI AST Award Chips Tech 03 ROM did not checksum Phoenix Dell 03 Disable Non Maskable Interrupt NMI Beep 1 1 4 BIOS ROM checksum in progress or failure Error Code 04 AMI AST Award 04 Any initialization before keyboard BAT is complete Reading keyboard SYS bit to check soft reset power on Reading keyboard SYS bit to check soft reset power On Keyboard controller test with and without mouse passe...

Page 6: ...ty checking and test parity in lower 256K test lower 256K memory Set up stack beep Setup interrupt vector table in lower 1K RAM area Initialize first 120 interrupt vectors with SPURIOUS_INT_HDLR and initialize INT 00h 1Fh according to INT_TBL Initialize CMOS timer Chips Tech 08 Interrupt Controller bad Phoenix Dell 08 Initialize chipset registers with POST values Beep 1 3 1 RAM refresh verificatio...

Page 7: ...r is issued Going to verify the BAT command NOP command processing is done CMOS shutdown register test to be done next CMOS shutdown register test to be done next Refresh link toggling passed Refresh link toggling passed 0D Beeps 13 short 8254 timer register Chips Tech 0D Beeps 14 short Refresh failure Award 0D Program some of the chipset s value Measure CPU speed for display Video initialization ...

Page 8: ...gisters test 12 Call support 800 909 3424 Test 8254 timer 0 channel 0 Test DMA page registers 12 Clear screen turn on video Chips Tech 12 Task register failure Phoenix Dell 12 Restore CPU control word during warm boot Jump to User Path 0 Beep 1 2 1 3 Test both 8237 DMA controllers 1st 64K RAM chip or data line failure bit 2 Error Code 13 AMI AST Award Compaq 13 DMA controller 1 2 interrupt control...

Page 9: ...the optional video ROM if present 19 Test 8259 functionality Test stuck NON Maskable Interrupt bits Parity I O check Verify NMI can be cleared 8259 Interrupt controller channel 1 mask bits test 19 Clear and initialize base memory Phoenix Dell 19 check memory Beep 2 3 2 1st 64K RAM chip or data line failure bit 9 AMI Award Compaq Error Code 1A 1A Memory refresh line is toggling Going to check 15 mi...

Page 10: ...over Going for sequential data R W test on 64K memory Power on message display OK 22 Enable slots 2 Initialize slot 2 Test 8259 working 22 Init 287 Coprocessor Phoenix Dell 22 Beep 3 1 3 master interrupt mask register test in progress or fail Test 8742 keyboard controller Beep 1 3 1 3 AMI Award Compaq Error Code 23 23 Base 64K sequential data R W test passed Going to SET BIOS stack and to do any s...

Page 11: ...ize serial ports 2C Boot 2C Beep 3 4 1 screen initialization in progress or failure 2C RAM failure on address xxxx If the BIOS detects error 2C 2E or 30 base 512K RAM error it displays and additional word bitmap xxxx indication the address line or bits that failed For example 2C 0002 means address line 1 bit one set has failed 2E 1020 means data bits 12 and 5 bits 12 and 5 set have failed in the l...

Page 12: ...rification of display type with switch setting and actual card to begin Verification of display type with switch setting and Actual Card to begin Memory address line test in progress 33 Non maskable interrupt for stuck interrupt EISA P486 P386 33 Call Tech Support 727 532 4151 33 Initialize Memory SIZE and RESETWD Phoenix Dell 33 Beep none 80 column color screen believed operable Initialize dispat...

Page 13: ...lure AMI Award Phoenix 3 07 Error Code 3E 3E About to go to real mode shutdown 3E Try to turn on level 2 cache 3E Get switches jumper status from 8742 Phoenix Dell 3E Beep 4 4 3 Math CoProcessor test in progress or failure AMI Award Dell ACER AMI AST Award Compaq Phoenix AMI AST Award Compaq AMI AST Award Compaq Phoenix AMI Award Compaq ACER Error Code 3F 3F Shutdown successful and Processor in re...

Page 14: ...alize PCI bus and devices Beep 2 1 3 2 Error Code 4A 4A Amount of memory above 1M found and verified Going for BIOS ROM data area check 4A Initialize all video adapters in system Beep 2 1 3 3 Start 2nd protected mode test Error Code 4B 4B Amount of memory above 1M found and verified Check for soft reset and going to clear memory below 1M for reset If power on go to check point 4Eh BIOS ROM data ar...

Page 15: ... base register test OK 53 If it is not a PnP BIOS initialize serial parallel ports Initialize time value in BIOS data area Initialize time value Initialize time value in 40h BIOS data area 53 Vector to VDU option ROMs Chips Tech 53 Initialize interrupt controller Error Code 54 ACER 54 7 shutdown AMI Compaq 54 Shutdown successful CPU in real mode Going to re store registers saved during preparation...

Page 16: ...roller test OK 5F All adapters successfully tested Chips Tech 5F Shadow RAM ACER 60 Set up BIOS interrupt AMI AST Award Compaq Error Code 60 60 DMA page register test passed About to go for DMA 1 verify from display memory 60 RAM size 60 Setup virus protection Boot sector protection 60 Start of memory test Chips Tech 60 CMOS RAM Phoenix AMI AST Award Compaq 60 Test expanded memory Beep 2 3 1 1 60 ...

Page 17: ...oenix Compaq 68 Enable external and CPU caches Beep 2 3 3 1 Ex tended address test Error Code 69 69 Back in real mode test successful Chips Tech 69 Real Time clock Phoenix Compaq 69 Setup System Management Mode SMM area Error Code 6A 6A Back in real mode error during test Chips Tech 6A Keyboard controller Phoenix 6A Display external cache size Beep 2 3 3 3 Determine memory test Error Code 6B Compa...

Page 18: ...ssor Error Code 79 79 About to initialize timer data area 79 Back in real mode No error Error Code 7A 7A Timer data initialized and about to verify CMOS battery power 7A Back in real mode error 7A Determine Init COM channels Error Code 7B 7B CMOS battery verification over 7B Exit protected mode 7C scan option RAMs Error Code 7C 7C High order address test failure 7C Set up hardware interrupts vecto...

Page 19: ...mming before setup complete Going to uncompress SETUP code and execute CMOS setup System ROM E000 0 check over 87 Got acknowledge read result 87 Configure Motherboard Configuration Devices option al Error Code 88 88 System 1 initialize 88 Returned from CMOS setup program and screen is cleared About to do programming after setup 88 Got result check it 88 Initialize BIOS Data Area Beep 3 1 3 1 Test ...

Page 20: ...ort hard disk type 47 Going to do any Init before C800 optical ROM control Returned after verifying from display memory 96 8237 DMA Initialization complete Chips Tech 96 BIOS PEAK Phoenix AMI 96 Clear huge ES segment register Beep 3 2 2 3 Error Code 97 97 Any Init before C800 optional ROM control is over Optional ROM check control will be done next Chips Tech 97 VGA power Phoenix 97 Fix up Multi P...

Page 21: ... and enable parity NMI A5 FDC failed reset Error Code A6 A6 Screen cleared Going to enable parity and NMI A6 FDC passed reset Error Code A7 A7 NMI and parity enabled Going to do any Initialization required before giving control to optional ROM at E000 Error Code A8 A8 Initialization before E000 ROM control over E000 ROM to get control next A8 Start of determine drive type A8 Erase F2 prompt Beep 3...

Page 22: ...1 Memory presence test OEM specific test to size on board memory Bad SIMM Chips Tech C1 I O channel activated Phoenix AMI Phoenix AMI Award Phoenix Award Phoenix AMI Award Phoenix AMI Award Phoenix AMI Award Phoenix AMI Award Phoenix Phoenix AMI Award C1 Initialize POST Error Manager PEM C2 NMI is Disable Power on delay start on C2 Initialize error logging C3 Check memory Cache Video or first 64K ...

Page 23: ...Beep 4 2 4 1 DD Transfer control to un compressed code in shadow ram at F000 FFF0 E0 Ready to replace E000 ROM E0 Initialize the chipset Error Code E1 E2 E1 Completed E000 ROM replacement E1 Initialize the bridge E2 Ready to replace EGA ROM E2 Initialize the motherboard chipset and CPU Beep 4 3 1 3 Error Code E3 E3 Completed EGA ROM replacement E3 Initialize refresh counter and system timer Beep 4...

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