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AC800 Series Intelligent Machine Controller Hardware User Guide Appendix
BIOS Code Description
Process Code
0x98 Console input devices connect
0x99  Super IO Initialization 
0x9A  USB initialization is started 
0x9C  USB Detect 
0x9D USB Enable
0xA0 IDE initialization is started
0xA2 IDE Detect 
0xAD  Ready To Boot event 
0xAE  Legacy Boot event 
0xB2  Legacy Option ROM Initialization 
0xB4  USB hot plug 
Eorror code (when a BIOS error occurs, contact the manufacturer)
0x0E  Microcode not found
0x0F  Microcode not loaded
0x50  Memory initialization error. Invalid memory type or incompatible memory speed
0x51  Memory initialization error. SPD reading has failed
0x52  Memory initialization error. Invalid memory size or memory modules do not match
0x53 
Memory initialization error. No usable memory detected
Note: If the buzzer sounds 6 times during startup, it means that the memory is installed improperly or 
is not installed. Contact the manufacturer for a solution.
0x54  Unspecied memory initialization error 
0x55  Memory not installed 
0x56  Invalid CPU type or Speed 
0x57  CPU mismatch 
0x58  CPU self test failed or possible CPU cache error 
0x59  CPU micro-code is not found or micro-code update is failed 
0x5A  Internal CPU error 
0x5B  reset PPI is not available 
0x5C  PEI phase BMC self-test failure 
0xAB  Setup Input Wait 
0xD0  CPU initialization error 
0xD1  North Bridge initialization error 
0xD2  South Bridge initialization error 
0xD3  Some of the Architectural Protocols are not available 
0xD4  PCI resource allocation error. Out of Resources 
0xD5  No Space for Legacy Option ROM 
0xD6  No Console Output Devices are found 
0xD7  No Console Input Devices are found 
0xD8  Invalid password 
0xD9  Error loading Boot Option (LoadImage returned error) 
0xDA  Boot Option is failed (StartImage returned error) 
0xDB  Flash update is failed 
0xDC  Reset protocol is not available 
0xDD  DXE phase BMC self-test failure