1603	 A Multiprogramming Monitor for Small Machines	 INT a combination hardware software monitor designed to control a wide variety of real-time input output devices is described. The simple hardware additions provide a uniform device to machine interface for such elements as keyboards graphic input devices and interval timers. The software relieves the user program from the details of input output timing buffering and task scheduling and provides parallel processing capability. User programs communicate with the monitor through a small set of meta-instruction which consists mostly of machine-language subroutine calls.
