A method for the direct call of a target function by a start function by means
of a processor with a memory management unit (MMU) in a computer operated by an
operating system. In today's multitasking operating systems, the call of a function
of a first task by a second task is executed and managed by the task scheduler
of the operating system. The time of the execution of the called function is uncertain
and is dependent on the operating system as well as the tasks managed at every
point in time by the operating system. One object of the invention is to disclose
a method which enables a time-determined call of a function and which is executed
immediately in connection with the call. This object is achieved in that the start
function is a component of a first task with a first memory context and in that
the first task performs a context switch from the first memory context into the
other memory context and this memory switch is reversed after the execution of
the target function.
