Switched memory address decoding in real time control systems

Hardware that affects the design of software for real time control systems arises from the use of switched memory address decoding., This is a technique by which some of the memory address decoding circuits in a computer system can be switched under the programmed control of the central processor and can be used to alter in a controlled fashion the position of a number of data sets in the memory map of the system. This type of operation is described and a consideration of the implementation of switched memory addressed decoding hardware is made