DEBUG CARD / POST CARD






In computing, a POST card is a plug-in interface card that displays progress and error codes generated during power-on self-test (POST) of a computer. It is used to troubleshoot computers that do not start up. If at least the CPU, BIOS, and the I/O interface the POST card relies on are working, the system sends two-hexadecimal-digit codes to a specified I/O port (usually 80 hex) during startup, some indicating a stage in the startup procedure, others identifying errors. The description for each code must be looked up in a table for the particular BIOS.

BIOS POST CODES MONSTER LIST

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