Automatic generation of software systems is the stream of the 90s in software engineering．Efficient management and flexible addition of special real—time devices is the basic function indispensable to any special real—time computer system．Moreover，their types and classes，and their quantity and quality are increasing with each passing day．How to overcome special real—time peripheral drivers’liability to variation is the key to automatic generation of any special real—time system．The paper relates to the prelimi—nary result of our study of automated drivers of special real—time devices．with focus on the inner construction and implementation of the semi—automatic generator of special real—time device drivers，RTDG(real time device generator)．which the authors develop on their own，and on a practice—tested application example．The stage result from our study of automatic generation of special real--time peripheral drivers has already passed the au—thentication on ministry level．