These notes have two related purposes:they describe the RATS operating system implemented on a PDP-11/45;and they discuss the properties and the potential of ''Capability-List'' (C-List)-type machines. Fundamental to the understanding of the C-List concept is the notion of a process. Exactly what a process is can only be defined in terms of a specific machine. A general notion of process is described by giving examples,then what the C-list concept can contribute to the general idea of a process is demonstrated,and finally what a process is in RATS is presented. RATS is described in a fair amount of detail. These notes describe the virtual machine that a RATS process sees.
展开▼
