Interfacing Techniques Between Different Families of Microprocessors and Peripherals
SD Besford · 1979
A wide variety of components is available to the designer of microprocessor based systems. Generally these components are not mutually compatible unless chosen from the range of one manufacturer. This restriction is removed if low cost circuits can be used for interfacing between components with different control requirements. Techniques are presented to interface microprocessors, peripherals and memory to a general purpose bus. The bus chosen is the LTU bus which has been in use for three years and for which a wide range of plug-in modules exist. The application of high speed proms, address decoders, Tristate logic and open-collector logic to interface circuits is discussed. Using these techniques a powerful system can be assembled using components from various manufacturers, irrespective of the differences in the required control signals.