Problems of Programming for Shared
L. S. Tuo, William Ulrich · 1967
Programming for shared real-time systems pre- sents problems not normally encountered in conventional computer applications. Interaction among programs of various interrupt levels must be controlled, effects of hardware and software errors must be localized, and processing handling capacity must be max- imized through proper task scheduling. The methods used for han- dling such problems in the Bell System's No. 1 Electronic Switching System (No. 1 ESS) which is such a shared real-time system are the subject of this paper.