Hello, I am writing some documentation for one of my projects and I want to include a diagram showing some SPI transactions. I'm not trying to show the setup and hold times or anything like that, I just want to show the general format of the data. However the data is specific to this application, so I can't just take an SPI transaction diagram from some other datasheet. Does anyone know of any (free) software that will easily allow drawing digital waveforms? Thanks, Glenn -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist