Onsrud Delta Tau Help

Does anyone know where I could find a manual on this. Does anyone have any knowledge or have ever heard of this? haha They used this in my machine which was one of the first Panel Pros that they built. I had a hard drive crash and Onsrud doesn't know anything about this software anymore. I had a guy come get the machine back up and running but my drill heads aren't working correctly and my feed and speed overrides do not work either. Please help or point in the direction of some info.