Abstract Discussion of the problems limiting the length of SRIO chains. Some causes of signal integrity problems in transmission lines are mentioned. A Working solution is presented. Introduction The problems limiting the length (physical length and the number of chips connected) of DOUT shift registers has been canvassed during the development of my Midi Keyboard LED Display (MKLD) project. MKLD Itself is the subject of an upcoming blog article. Suffice it to say for now that the