paging implimentation project

Background The basic function performed by a computer is execution of a program, which consists of a set of instructions stored in memory. The processor does the actual work by executing instructions specified in the program. In its simplest form, instruction processing consists of two steps The processor reads (fetches) instructions from memory one at a time and executes each instruction. Program execution consists of repeating the process of instruction fetch and instruction execution The processing required for a single instruction is called an instruction cycle consist of two steps, the fetch cycle and the execute cycle. Program execution halts only if the machine is turned off, some sort of unrecoverable error occurs, or a program instruction that halts the computer is encountered. To improve processing efficiency, the concept of interrupts is used. Virtually all computers provide a mechanism by which other modules (I/O, memory) may interrupt the normal processing of the processor. With interrupts, the processor can be engaged in executing other instructions while an I/O operation is in progress. For example, most external devices are much slower than the processor. Suppose that the processor is transferring data to a printer using the instruction cycle. After each write operation, the processor must pause and remain idle until the printer catches up. The length of this pause may be on the order of many hundreds or even thousands of instruction cycles that do not involve memory. Clearly, this is a very wasteful use of the processor. In this project, multiple nested interrupt are being discuss and the program build are meant to this type of interrupt but somehow the program can also work for multiple sequential interrupt based on how priority of interrupts are set. Later I will discuss how multiple interrupts are being served by operating system and how sequential and nested multiple interrupt are differs. 1.1 Objectives The objectives of this project