EPX-C414/Power-on Self-Test (POST) Codes
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Appendix C. Power-on Self-Test (POST) Codes
If the system hangs before the BIOS can process the error, the value displayed at the
I/O port address 80h is the code of the last successful operation. In this case, the screen
does not display an error code.
POST_CODE()
Use the POST_CODE() macro to output a number (Data) to the configured I/O port or
status code.
Prototype
#include "InsydeModulePkg/Include/PostCode.h" POST_CODE(Data)
Parameters
Data: Unsigned integer that specifies the POST Code value. Must be between 0x00 and
0xff.
POST Codes
POST Codes are 8-bit unsigned integer values that are sent to a specific I/O port (where
hardware can decode and display the value) or to the DDT debugger.
8-Bit POST Code Ranges
This table shows the overview of the 8-Bit POST Code Ranges used by InsydeH2O.
Table 23:
8-Bit POST Code Ranges
Phase
POST Code Value Ranges
SEC
0x01 - 0x0F
PEI
0x70 - 0x9F
DXE
0x40 - 0x6F
BDS
0x10 - 0x3F
SMM 0xA0
-
0xBF
S3 0xC0
-
0xCF
ASL
0x51 - 0x55
0xE1 - 0xE4
PostBDS 0xF9
-
0xFE
Insyde H2ODDT Reserved
0xD0 - 0xD7
OEM Reserved
0xE8 - 0xEB
Reserved
0xD8 - 0xE0
0xE5 - 0xE7
0xEC - 0xF8
