The LPC post board is a tool which is connected to the LPC bus and can perform 3 functions: display port 80 post codes, output post codes to the serial port and debugging using the serial port. The device can be used for debugging and repair.

Debug adapter for bootloader development

The adapter can be connected to the system using the standard TPM header. Support for additional header versions has been added. For example for the OpenCompute version:

OpenCompute LPC header adapter

The board includes the following functions:

  • Port 80 and 81 display (can be rotated depending on the position of the board)
  • Port 80 to 83 output to the serial port (including time stamp function)
  • Serial port for debugging purposes (COM1 or COM2 selectable)
  • USB to serial converter so no serial port is required on the host system

The serial port provided by this board is ideal for those systems that don't contain a serial port but still require debugging output.

The human eye might miss a quick update of the port 80 display, the output to the serial interface enables to view the complete sequence of all port 80-83 debug codes.

The board can be used for the following applications:

  • Port 80 code display
  • Debugging x86 PC computer board
  • Kernel debugging for any operating system
  • Output of debugging messages for UEFI BIOS and coreboot development
  • PC computer repair tool
  • Functional test tool

When required custom versions can be created to suit the needs of the customer.

More information can be found in the datasheet:

More information about the various LPC header versions can be found here: