Abstract: A method of allocating memory space on a cyclic memory system is described. The memory system is partitioned into a plurality of memory regions with each of the regions containing contiguous memory elements. Each of the memory regions is then partitioned into a plurality of memory subregions wherein all subregions within a region are of equal memory capacity but where subregions of different regions have different memory capacities. A file of data is then assigned to occupy one available subregion of the memory which is the smallest available subregion which has sufficient memory capacity to contain the file of data.

Abstract: A stored program electronic digital computer has a control system for the computer. There are a plurality of processes in the computer. There are four stored program controllers in the computer which operate in different processors within the computer system. There is a master controller, a command controller, a task controller, and a disc I/O controller. These four controllers operate in a hierarchy of control. Each controller exercises control over a given level of work in the computing system.