if i remember correctly there is a file created when you enter codes for your set top box remote. this file has the remote codes for 0 thru 9 and enter.
there would need to be a separate file defined for each set top box.
then the end user would go into the file and prefix each remote code with z1 z2 or z3 depending on which zone is controlled.
each tuner of course would also be associated with a particular set top box remote file
off hand i know meedio and gbpvr support this type of configuration.
there is also an explanation here at the usbuirt forum as to how this works.
http://65.36.202.170/phpBB2/viewtopic.php?t=266&highlight=zones&sid=1c012c45f25ef311c24a4b1270de18cd
there would need to be a separate file defined for each set top box.
then the end user would go into the file and prefix each remote code with z1 z2 or z3 depending on which zone is controlled.
each tuner of course would also be associated with a particular set top box remote file
off hand i know meedio and gbpvr support this type of configuration.
there is also an explanation here at the usbuirt forum as to how this works.
http://65.36.202.170/phpBB2/viewtopic.php?t=266&highlight=zones&sid=1c012c45f25ef311c24a4b1270de18cd