7 port80 post code, 1 what is post, 2 what are post codes – Kontron ETX-Starterkit User Manual
Page 14: Port80 post code, What is post, What are post codes, 7port80 post code
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7 Port80 POST Code
Kontron Short Description
ETX® Eval-Board
14
7
Port80 POST Code
7.1
What is POST?
POST is an acronym for Power On Self Test. POST is the traditional name for the routines that the BIOS
uses to test and initialize the devices on your system when the PC is powered on until the OS is started.
7.2
What are POST codes?
Each POST routine is assigned a POST code, a unique number which is sent to I/O port 080h before the
routine is executed. If the computer hangs during POST, a computer technician can locate the problem
by finding the last value written to IO port 080h. Lists of POST codes and associated POST test and
initialization routines for PhoenixBIOS v4 are available on:
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