CPU Simulator

CPU Simulator is intended for students studying A-Level AQA Computer Science, who need to understand certain information on how acomputers CPU functions.
Specifically, the fetch-decode-execute cycle and how components of the processor change at each stagedepending on the code being run.

An interactive interface shows the components of the CPU, their contents, a description of what has changed in one clock cycle, an IDE to develop assembly code, an interface to view corresponding machine code, an interface to change preferences and more.

Components you can track:

Address Bus

Data Bus

Clock

Program Counter (PC)

Current Instruction Register (CIR)

Memory Address Register (MAR)

Memory Buffer Register (MBR)

128 General Purpose Registers

Arithmetic Logic Unit (ALU)

Status Register

128 Data Memory Locations

Instruction Memory

Options you can change:

Run Speed (including stepped mode)

Number Base

This is a document-based application which means that you can create and run an unlimited number of unique simulations, save and share them.

This app is primarily intended to helpteach 4.7.3.2 The Fetch-Execute cycle and the role of registers within itof the AQA A-Level specification, using theHarvard Architecture.,

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