You are to simulate the execution of processes by a computer system with a large memory, one terminal per user, a CPU, and one disk drive. Each process will be described by its class $($REAL$-$TIME or INTERACTIVE$)$ and its start time followed by a sequence of resource requests.

These resources requests will include CPU requests $($CPU$),$ disk reads $($DISK$)$ and terminal accesses $($TTY$).$ In addition, all real$-$time processes will have a DEADLINE, by which they must complete.