Junior program tester - a valuable aid in writing programs

junior program tester elektor march 1983 P. Wild You have written your own program. Now it is merely necessary to enter the program and run it. In many cases however, the bugs are having a field day. Where does one start with debugging? The first items to check are the contents of the accumulator, the X- and Y-register and the processor status register. This is usually the quickest way of finding possible errors. junior program tester a valuable aid in writing programs The register check is not very complicated and is a great aid to all Junior Computer owners. In order to display the contents of the accumulator and of the X- and Y-register only a few commands are needed; these are contained in the program and ensure that the contents of the accumulator and of the X- and Y-register are displayed from left to right. A few commands are also contained in the program for displaying the processor status register. Something more is required, however. In addition to the software a small h...