Eric.Craaybeek

It is indeed calling the library from 64-bit LabVIEW on 64-bit windows. I'll assume this driver won't work in this case. Thank you for your help! Just out of curiosity do you know of any other libraries that would allow register level access to a LPT port on 64-bit windows?

A co-worker and I have been porting some drivers for a custom controller that uses a special protocol on a LPT port. We have the port working on one PC using the OpenG PortIO library. Previously we used "Out Port.vi" and "In Port.vi" drivers which I believe are no longer supported. When we try to run the same code on a different PC the OpenG library throws an error 1275. But it doesn't give a description of the error. This makes it very hard for us to determine what is causing the error and how we should correct it. Is there a description of error codes from this library? If not does anyone know what error code 1275 means when coming from the OpenG port IO library. The error is specifically generated when we try to use both "PORT IO Enable Range" and "Port IO Write Byte" Any help would be greatly appreciated. Thank you!