The application of parallel real-time systems for safety-orientated multi-core processors inaviation electronics systems is considered as the only known solution to fulfill the risingrequirement and the growth of the cyber-layer in aircrafts. This shift in hardware architecturerequires new software developments as well as new verification and validation strategies. Anongoing research utilizes novel advances in model-based development (MBD) and the automaticsource code-generation for parallel applications.This thesis discusses the new MBD approach, the automatic source code generation, and newsimulation-based x-in-the-loop (XIL) verification and validation processes. The new model-basedworkflow and the analysis approach is implemented in a x-in-the-loop toolbox generator (XTG).This unifies the x-in-the-loop instances, standardizes the applied tools, and reduces the effort ofalgorithm verification and validation process.