The usual design and development method in systems architecture of separate portions of soft- and hardware components introduces high inefficiencies, due to redundancies and seldom used functions on the wrong levels of implementation. A better approach offers a methodology for an integrated software, firmware, and hardware design. Required are, however, immense computer support and graphical capabilities. A system of this kind is especially valuable for development under constraints of performance, cost, time, space, or other limitations. We present such a system and show its capabilities in the development of a defect-free sorter systems module. Keywords: Application-Specific-Architecture, Integrated design and development systems, CAD, ASIC, Performance