Can Psychtoolbox DAQ support Parallel ports LPT1-LPT3 independently?

1
Dear Friends,

For the Psychtoolbox DAQ module,we come across a problem.For normal PC,
in doing psychological experiments,we use the Parallel port to send
signals to drive LEDs,there are only eight data line available,since we
want to present more stimuli and controlling the timing
independently,this covers more channels than a single LPT can
fulfill,we are seeking to use two additional Parallel ports which
should provide another 16 data channel,I wonder anyone has experienced
this problem and kindly share the knowledge,is there some
specific on hardware setting? it seems the PC can not recognize an
additional port.

The following is a simple script to open LPT1 and send a trigger.

dio=digitalio('parallel','LPT1');
addline(dio,0:7,'out');
addline(dio,9:13,'in');

putvalue(dio.Line(1:8),3);

Thanks,
John