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OLIVETTI PS2 BIOS Post Codes

  • 01 - Test CPU
  • 02 - Check CMOS shutdown byte
  • 03 - Initialize the PIC
  • 04 - Test refresh
  • 05 - Test CMOS/RTC periodic interrupt
  • 06 - Test timer ratio
  • 07 - Test first 64KB of RAM
  • 08 - Test 8042 keyboard controller
  • 09 - Test NMI
  • 0A - Test 8254 PIT
  • 0B - Test port 94h
  • 0C - Test port 103h
  • 0D - Test port 102h
  • 0E - Test port 96h
  • 0F - Test port 107h
  • 10 - Blank the display
  • 11 - Check the keyboard
  • 12 - Test CMOS RAM battery
  • 13 - Verify CMOS RAM checksum
  • 14 - Verify extended CMOS RAM checksum
  • 15 - Initialize system board and adapter
  • 16 - Initialize and test RAM
  • 17 - Test protected mode registers
  • 18 - Test CMOS RAM shutdown byte
  • 19 - Test CMOS protected mode
  • 1A - Initialize video adapter ROM scan
  • 1B - Test BIOS ROM checksum
  • 1C - Test PIC #1
  • 1D - Test PIC #2
  • 1E - Initialize interrupt vectors
  • 1F - Test CMOS RAM
  • 20 - Test extended CMOS RAM
  • 21 - Test CMOS real-time clock
  • 22 - Test clock calendar
  • 23 - Dummy checkpoint
  • 24 - Test watchdog timer
  • 25 - Test 64KB to 640KB RAM
  • 26 - Configure lower 640KB RAM
  • 27 - Test extended memory
  • 28 - Initialize extended BIOS data segment and log POST error
  • 29 - Configure memory above 1MB
  • 2A - Dummy checkpoint
  • 2B - Test RAM parity
  • 2C - Test DMA page registers
  • 2D - Test DMA controller registers
  • 2E - Test DMA transfer-count register
  • 2F - Initialize DMA controller
  • 30 - Test PIO 61
  • 31 - Test the keyboard
  • 32 - Initialize keyboard typematic rate and delay
  • 33 - Test auxiliary device
  • 34 - Test advanced protected mode
  • 35 - Configure parallel ports
  • 36 - Configure 8250 serial ports
  • 37 - Test and configure math co-processor
  • 38 - Test and configure game-port adapter
  • 39 - Configure and initialize hard disk
  • 3A - Floppy-disk configuration
  • 3B - Initialize ROM drivers
  • 3C - Display total memory and hard drives
  • 3D - Final initialization
  • 3E - Detect and initialize parallel ports
  • 3F - Initialize hard drive and controller
  • 40 - Initialize math co-processor
  • 42 - Initialize adapter ROM scan
  • CC - Unexpected processor excerption occurred
  • DD - Save DDNIL status
  • EE - NMI handler shutdown
  • FF - Call interrupt 19 boot loader
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