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ALR Advacned Logic Research BIOS POST Codes

  • 01 - 80 [3,4] 86 Register Test in Progress
  • 02 - Real-Time Clock Write/Read Failure
  • 03 - ROM BIOS Checksum Failure
  • 04 - Programmable Internal Timer Failure (or no Video Card)
  • 05 - DMA Initialization Failure
  • 06 - DMA Page Register Write/Read Failure
  • 08 - RAM Refresh Verification Failure
  • 09 - First 64-KB RAM Test in Progress
  • 0A - First 64-KB RAM Chip or Data Line Multi-Bit
  • 0B - First 64-KB RAM Odd/Even Logic Failure
  • 0C - Address Line Failure First 64-KB RAM
  • 0D - Parity Failure First 64-KB RAM
  • 10 - Bit 0 1st 64-KB RAM Failure
  • 11 - Bit 1 1st 64-KB RAM Failure
  • 12 - Bit 2 1st 64-KB RAM Failure
  • 13 - Bit 3 1st 64-KB RAM Failure
  • 14 - Bit 4 1st 64-KB RAM Failure
  • 15 - Bit 5 1st 64-KB RAM Failure
  • 16 - Bit 6 1st 64-KB RAM Failure
  • 17 - Bit 7 1st 64-KB RAM Failure
  • 18 - Bit 8 1st 64-KB RAM Failure
  • 19 - Bit 9 1st 64-KB RAM Failure
  • 1A - Bit A 1st 64-KB RAM Failure
  • 1B - Bit B 1st 64-KB RAM Failure
  • 1C - Bit C 1st 64-KB RAM Failure
  • 1D - Bit D 1st 64-KB RAM Failure
  • 1E - Bit E 1st 64-KB RAM Failure
  • 1F - Bit F 1st 64-KB RAM Failure
  • 20 - Slave DMA Register Failure
  • 21 - Master DMA Register Failure
  • 22 - Master Interrupt Mask Register Failure
  • 23 - Slave Interrupt Mask Register Failure
  • 25 - Interrupt Vector Loading in Progress
  • 27 - Keyboard Controller Test Failure
  • 28 - Real-Time Clock Power Failure and Checksum Calculation in Progress
  • 29 - Real-Time Clock Configuration Validation in Progress
  • 2B - Screen Memory Test Failure
  • 2C - Screen Initialization Failure
  • 2D - Screen Retrace Test Failure
  • 2E - Search for Video ROM in Progress
  • 30 - Screen Believed Running With Video ROM
  • 31 - Monochrome Display Believed Operable
  • 32 - Color Display (40 Column) Believed Operable
  • 33 - Color Display (80 Column) Believed Operable
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