Thank you for this information.
It is unfortunate that I cannot use the add-on parallel port card (with an address greater than 32000 decimal)... maybe in the future....
I don't know how to set this as a parameter of my card... and I don't even know if it is possible.
many thanks for your answer.
ps: I'm returning to the solution of keyboard press instead of using TTL signals of my button box....
Aurélie