Parallel port drivers are implemented to enable the functionality of communicating with printers and other devices that are connected to parallel ports. As suggested by Microsoft MVP & Community Moderator Ronnie Vernon Windows 7 does not include 64-bit Parallel port drivers.

On a 32 bit system everything is where you expect. But on a 64bit system; System32 is reserved for 64bit libs and apps (seriously!) WOW64 is for 32bit equivalents (yes, I know) So if you're on 64bit windows (win7 comes in 32bit or 64bit) you need to put 32bit dlls into the wow64 directory instead of System32. If your win7 is 32bit flavour the dll should go into System32:-/ Hope that helps Jon -- Jonathan Peirce Nottingham Visual Neuroscience This message and any attachment are intended solely for the addressee and may contain confidential information. If you have received this message in error, please send it back to me, and immediately delete it. Please do not use, copy or disclose the information contained in this message or in any attachment.

Any views or opinions expressed by the author of this email do not necessarily reflect the views of the University of Nottingham. This message has been checked for viruses but the contents of an attachment may still contain software viruses which could damage your computer system: you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation. Nate Vack 7/9/2012, 5:51 น. Hi everyone, First of all thanks a lot to Nate and his post, our Windows 7 64 bit stimulus presentation computer sends now TTL pulses to our EEG recording computer over the parallel port. However, the trigger codes that we are receiving do not look as expected.

Maybe I am misunderstanding the whole concept, but this is what I am trying to do: Using PsychoPy Builder v1.79.00 on the above mentioned Windows 7 64 bit computer I would like to send stimulus trigger that denote the appearance of a stimulus and a response in the EEG data. EEG recording is accomplished using the BrainVision Recorder software on an identical computer. Each stimulus category (e.g., sounds of different pitch) is assigned to a specific number ranging from 1 to 255 defined in the conditionsFile.

However, I am receiving only three kinds of triggers in the EEG marker file (i.e., S1, S2 and S3). Here I am insecure: It might be that the BrainVisionRecorder does not interpret the triggers that were sent through the parallel port properly.

Hence, it might not be a PsychoPy problem at all, which is why I will also contact the BrainProducts support. Has anyone experienced such an issue? The Coder View of PsychoPy offers to set each pin of the pallel port as high or low and there are several posts on this topic already. However, the BuilderView offers only to define startData$ and stopData$. Village map andhra pradesh capital map. I could not find any explicit explanation about the possible data range here. Is it only on (1) and off (0)?

Or, is is possible to send for instance a 55? Thanks in advance for any suggestions Sebastian Jon 13/1/2014, 2:06 น. The parallel port component in Builder sends a byte (a value 0-255) controlling the 8 pins at once along the lines of this function int eh library: Yes, sending a value of 55 should be entirely possible.

I do that sort of thing myself in EEG; each condition has an ID associated with it and I record that value in the EEG system using the parallel port. You can write 55 directly as an integer or you can use something like this if you like seeing which lines are up and which are down: int('00110111', 2) #converts from base 2 to integer Maybe you need an oscilloscope to check that the lines are being controlled as you expected. Then again, the usual reasons for this approach to fail would be that the drivers weren't installed properly or you didn't have the correct address for your parallel port.