Edit the Bitstream Header

About this task

You can use the Programmer to edit the bitstream header information, for example, to add project or revision information. To edit the header:

Procedure

  1. In the Programmer, choose File > Edit Header... or click the toolbar icon to open the Edit Image Header dialog box. The window shows the default header information.
  2. Edit the header.
  3. Click Save.

Results

Important: When editing the bitstream header, if you remove any of the auto-generated information (such as Device: <name>), the Programmer may not be able to recognize the bitstream. Efinix recommends that you only append a small amount of information to the auto-generated data if you want to customize or annotate the header. The header can be a maximum of 256 characters, including the auto-generated text.
If you want to write your own program to detect which device the bitstream targets (e.g., using a microprocessor and SPI passive mode), be sure to keep all of the auto-generated header, specifically the Device: <name> string.