converting the unidirectional data port on a parallel port to bidirectional. How do u use java to enable bit 5 on the control port of the parallel port?

I have written code in java to read from the parallel port. I will be sending data in the form of a '1' or '0' to the data port from an external device and so need to convert the data port to bidirectional. This is done by enabeling bit 5 on the control port. I have tried this but i don't think i did it correctly, so it doesn't work. Broadcast message 4/12 I am doing a project in which I have a device which produces a small voltage, this voltage then needs to be registered. When finished there will be many sensors each producing either 0V ('0') or 5V+ ('1'). When the voltage is '1' I need my java program to be able to read it and process it. Only one sensor will be '1' at a time. I have also written code, in java, for my project, and have produced the hardware for the project. The hardware and software work correctly, separately. I have also, separately, written code to access the parallel port. I have obtained some drivers which enable me to read single sections of the port. I have also obtained a program which opens the ports on the pc for a set time, therefore bypassing windows XP built in safety. I have been able to read the values coming into the port's status, control and data pins. Unfortunately the data pins seem to be working in unidirectional mode. I.e. only the pc can write to them. In order to make it bidirectional, I have been told I need to enable bit 5 of the control port of the parallel port. That is where the problem is! How do I write the '1' on bit 5? Is there any other way of doing it? ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform win XP using sun jdeveloper