https://github.com/iabdullah215/16-bit-instruction-set-architecture-simulator
https://github.com/iabdullah215/16-bit-instruction-set-architecture-simulator
cpp instruction-set-architecture instruction-set-simulator
Last synced: 3 months ago
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- Host: GitHub
- URL: https://github.com/iabdullah215/16-bit-instruction-set-architecture-simulator
- Owner: iabdullah215
- Created: 2024-03-14T14:30:18.000Z (about 1 year ago)
- Default Branch: main
- Last Pushed: 2024-03-25T04:40:54.000Z (about 1 year ago)
- Last Synced: 2024-12-30T00:28:40.399Z (5 months ago)
- Topics: cpp, instruction-set-architecture, instruction-set-simulator
- Language: C++
- Homepage:
- Size: 8.79 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# 16-bit-Instruction-Set-Architecture-Simulator
# ISA Simulator
This C++ code simulates a simple Instruction Set Architecture (ISA) processor. Let's break down the code and understand its components and functionality.
## Constants
Several constants are defined at the beginning, including `MEMORY_SIZE` for the size of the memory, `REGISTER_COUNT` for the number of registers, and various opcode constants representing different instructions.
## Class `ISA_Simulator`
This class represents the ISA simulator.
- Private member variables:
- `memory`: A vector representing the memory of the simulated ISA machine.
- `registers`: A vector representing the registers of the simulated ISA machine.
- `pc`: An integer representing the program counter.
- Public member functions:
- `ISA_Simulator()`: The constructor that initializes memory, registers, and the program counter.
- `void loadProgram(const std::vector& program)`: Loads a program into the memory.
- `void run()`: Executes the loaded program.
- `void printMemory() const`: Prints the content of the memory.
- `void printRegisters() const`: Prints the content of the registers.
## `loadProgram` Function
Loads the given program into the memory.
## `run` Function
Executes the loaded program by iterating through memory instructions.
- Fetches each instruction from memory, extracts the opcode and operand, and performs the corresponding operation.
- The loop continues until the program counter reaches the end of the memory or a halt instruction is encountered.
## `printMemory` Function
Prints the content of the memory in hexadecimal format.
## `printRegisters` Function
Prints the content of the registers.
## `main` Function
Creates an instance of `ISA_Simulator`.
Defines an example program using opcode constants and operand values.
Loads the program into the simulator, runs it, and then prints the memory and registers after execution.
## Example Program
The example program loads values from memory into registers, adds them, stores the result in memory and a register, and then halts.
Each instruction in the program is represented by a short integer where the opcode occupies the upper 8 bits and the operand occupies the lower 8 bits.
This code provides a basic framework for simulating an ISA processor with a limited set of instructions and capabilities. It can be extended further to support additional instructions and features as needed.