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Compaq Mega-Post User Manual
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Compaq Mega-Post User Manual

Compaq Mega-Post User Manual

Compaq pci-diagnostic card user's guide
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User's Guide
Mega-Post PCI-Diagnostic Card
User's Guide
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Summary of Contents for Compaq Mega-Post

  • Page 1 User's Guide Mega-Post PCI-Diagnostic Card User's Guide...

  • Page 2: System Requirements

    Diagnostic Card in hand, you no longer have to go through tedious and time consuming process of trying to figure out what is wrong with your PC hardware. The Mega-Post PCI-Diagnostic Card will tell you exactly what is wrong with your PC in just seconds. It saves you time and money.

  • Page 3: Power On Self-Test (Post) Codes

    Power Supply, 3.3-Volt. Some motherboards have 3.3V power supply to PCI slots. This indicator should be on if the motherboard supplies 3.3V power. Installing the Mega-Post PCI-Diagnostic Card Installation Procedure TO INSTALL A Diagnostic Card: Install the Diagnostic Card in any available PCI or ISA expansion slot.

  • Page 4: Post Codes

    User's Guide POST Codes When the machine is turned on, the hexadecimal display should show the various POST codes as the system executes (unless it has a rare BIOS that does not display POST codes). If the machine does not boot, system POST has detected a fatal fault and stopped. The number showing in the hexadecimal display on the Diagnostic Card is the number of the test in which POST failed.
  • Page 5 (00)Going to give control to INT 19H boot loader. (01)Processor register test about to start, and NMI to be disabled,286 reg. test about to start. (01)Processor test 1;Processor status(1FLAGS) verification; Tests the following processor status flags carry, zero, sign, overflow. The BIOS will set each of these Award flags, verify they are set then turn each flag off and verify it is off.
  • Page 6 (06)ROM is enabled. Calculating ROM BIOS checksum, and waiting for Keyboard controller input buffer to be free. Calculating ROM BIOS checksum.. Video disabled and sys- tem timer test begin Video disabled and system timer counting (06)Support chipset initialize. (06)Test memory refresh toggle; RAM must be periodically refreshed in-order to Award keep the memory from decaying.
  • Page 7 Phoenix&Dell (0A)Initialize CPU registers. (Beep)=1-1-3-3. Perform BIOS checksum test. 1st 64K RAM chip or data line failure multi-bit. CMOS status register initialize done. Keyboard controller command byte is written. Going to issue Pin-23,24 block- ing/ unblocking command. Going to issue pin-23,24 blocking/ nubolcking command.
  • Page 8 (10)DMA controller test 0 register (10)DMA channel 1 Test. Test DMA controller 1 with AA, 55,FF,00 pattern.8237 Award DMA,channel 0 test. (10)PPI disabled, Program timers 0 & 1. Compaq Chips & Tech (10)(Beeps)=19 short, IDT,GDT failure. Phoenix&Dell (10)Initialize Power Management.(Beep)=1-2-1-1.Initia- timers.[Beep]=2-1-1 1st 64K RAM chip or data line failure-bit 0.
  • Page 9 Award (16)Test 8259-2 mask bits; Verify 8259 channel 2 masked interrupt by alternate turning off and on the interrupt line. Setup Interrupt vectors. (16)Battery power was lost. Compaq Chips & Tech (16)Keyboard controller gate A20 failure. Phoenix&Dell (16)BIOS checksum.(Beep)=1-2-2-3. Coprocessor.[Beep]=2-2-3 1st 64K RAM chip or data line failure-bit 6.
  • Page 10 (1E)If EISA NVM checksum is good, execute EISA initialization(EISA BIOS ONLY). Size Award system memory. (1E)Test keyboard controller. Compaq Phoenix&Dell (1E)[Beep]=2-4-3 1st 64K RAM chip or data line failure- bit E.Base 64K RAM test(16 bits). (1F)Video mode set call for mono/color begins. Mode set call for mono/color OK.
  • Page 11 (27)Enable slots 7; Initialize slot 7.Setup cache control or shadow RAM. Award Compaq (27)initialize parallel printer. Phoenix&Dell (27)[Beep]=3-2-4 keyboard controller test in-progress or failure. ACER (28)Test CPU. (28)initialization before setting video mode is complete. Going for monochrome mode and color setting .Check extended memory.
  • Page 12 (30)Get base memory & extended memory size. Size base And extended memory Award from 256K to 640K and extended memory above 1MB. (30)Clear 1st 128K bytes of RAM. Compaq (30)[beep]=none screen believed running w/video ROM. Dell (30)see Error Code "2C".Unexpected shutdown.[Beep]=no- ne screen believed operable.
  • Page 13 (39)New cursor position read and saved. Going go display the Hit<DEL>message. Memory above 1MB initialized. (39)Check for parallel ports. Compaq (39)Reinitialize the cache.(Beep)=1-4-3-1 Phoenix (3A)Check memory, first 64K,one long beep. Reference string display is over. Going to display the Hit<ESC> massage. Memory size display initiated. This will be updated when the BIOS goes through the memory.
  • Page 14 (44)Interrupts enabled(if post switch is on). Going to initialize data to check memory wrap around at 0:0. (44) Going to initialize data to check memory re-map at 0:0. Award (44)Start verify cycle if 128K RAM test. Compaq (44)Initialize BIOS interrupts.(Beep)=2-1-2-1. Verify video configuration. Phoenix ACER (45)Set up BIOS RAM .
  • Page 15 (50)Write all the CMOS values currently in the BIOS stack areas back into the Award CMOS. Write CMOS; Write all CMOS values back to RAM and clear screen. (50)Check for dual freq in CMOS. Compaq Chips & Tech (50)Hardware initialize. Phoenix (50)Display CPU type and speed.(Beep)=2-2-1-1.(50)Per- form LSL instruction test.[Beep]=none Custom chip set or custom platform.
  • Page 16 (59)Hit<ESC> message cleared.<Wait..> message displayed. About to start DMA and interrupt controller test. Master 8259 mask register OK, about to start slave. (59)Check existence of adapter. Compaq Chips & Tech (59)Exiting protected mode. Phoenix (59)Initialize POST display service. (5A)About to check timer and keyboard interrupt level.
  • Page 17 (64)Start test real time clock. (64)BIOS ROM data area check halfway. BIOS ROM data area check to be complete. (64)Copy BIOS to shadow RAM. Compaq (64)Start test of real memory. Chips & Tech (64)Address line A20. Phoenix (64)Jump to User Patch 1.(Beep)=2-3-2-1.Shadow memory test.
  • Page 18 Chips & Tech (71)Key-lock. (72)Keyboard interface test over, mouse interface test started. Compaq (72)High order address test. Chips & Tech (72)Pointing divide. Phoenix (72)Check for configuration errors.(Beep)=2-4-1-3.(72) Real time clock test. (73)Global data initialization for keyboard/mouse over. Compaq (73)Exit memory test.
  • Page 19 (82)Keyboard controller interface test over. About to write command byte and Init circular buffer. Check for printer ports and put the addresses in global data area. (82)Check result received. Compaq (82)Detect and install external RS232 ports.(Beep)=3-1- 1-3.Test floppy drives. Phoenix (83)Command byte written, global data Init done.
  • Page 20 Compaq (90)Start of CMOS test . Chips & Tech (90)Set-up RAM. Phoenix (90)Initialize hard-disk controller.(Beep)=3-2-1-1 (91)Floppy setup complete. Hard disk setup to be done next. Compaq (91)CMOS seems to be OK. Chips & Tech (91)CPU speed. Phoenix (91)Initialize local-bus hard-disk controller.(Beep)=3-2-1-2 (92)Hard disk setup complete.
  • Page 21 Phoenix (9F)Determine number at ATA and SCSI drives. (A0)Keyboard ID command issued. Keyboard ID flag to be reset. (A0)Start of diskette tests. Compaq (A0)Set time of day .(Beep)=3-3-1-1 Phoenix (A1)Keyboard ID flag reset. Cache memory test to follow. (A1)FDC reset active (3F8H bit 2) Compaq (A2)Cache memory test over.
  • Page 22 Compaq (B5)Drive error(error condition). Phoenix (B5)terminate Quiet-Boot(optional) Compaq (B6)Drive failed(failed to respond). Phoenix (B6)Check password(optional).(Beep)=3-4-2-3 Compaq (B7)CMOS RAM invalid or no fixed drives, exit. Compaq (B8)Fixed drive tests complete. Phoenix (B8)Clear global descriptor table.(Beep)=3-4-3-4 Compaq (B9)Attempt to boot diskette. Phoenix (B9)Prepare boot.
  • Page 23 (CD)BAT command to keyboard controller is to be issued. (CE)Keyboard controller BAT result verified. Any initialization after KB controller. (CF)Initialization after KB controller BAT done. Keyboard command byte to be written next. Compaq (D0)Entry to clear memory routine. (D0)Interrupt handler error.(Beep)=4-2-1-1 Phoenix (D1)Keyboard controller command byte is written.