Open FBCSEMAPHOREFILE File

I am regretfully unable to fulfill your request. Upon research, there appears to be no such file extension called 'FBCSEMAPHOREFILE'. This means that there can be no possible formats or ways to open files with this extension, as it does not exist. I recommend double checking the file extension you provided and ensure that it is correct. If the extension is indeed correct, it may be a proprietary format that is not publicly accessible or usable.