Now that we have a good understanding of where the data comes from (the pcl711, iso813, and the dio144 drivers and their implementation) and how the data gets put into shared memory (the adios server), let's take a quick look at two additional utilities, namely showsamp and tag.
The showsamp utility was written first, and was mainly a debugging aid to determine if the samples being stored by ADIOS were correct and accessible. Then tag was written to exercise the configuration files and the tag accessibility. So, as with most projects, two of the useful utilities weren't in the initial requirements, and were actually written as simple debug programs.