DMA-coupled instrumentation bus

The core of the invention is a universally applicable method for fast parallel digital transmission of data between one or a number of data processing systems (DVA) and selectively addressable subscribers. These can be data sinks or sources themselves or can be used as interface to other technical facilities. With respect to the data processing systems, the transmission runs in direct memory access, control information items or data being transmitted in time-division multiplex mode. In an advantageous development of the method (see Figure 1), a transmission rate of over 700 kHz has been achieved which corresponds to a data rate of more than 11 MBIT/sec. The method supplies the basis for a modular system, which is inexpensive due to low hardware expenditure, for process data input/output under real-time conditions in complex measuring and control facilities.