InkboxSoftware/excelCPU
ExcelCPU
excelCPU est un émulateur d'ordinateur basé sur un tableur qui simule une unité centrale de traitement 16 bits. Il fonctionne comme un modèle de CPU éducatif où l'état du système, les registres et la mémoire vive sont gérés au sein d'une grille de cellules de tableur.
Le projet inclut un compilateur d'assembleur qui convertit le code source assembleur personnalisé en un format compatible avec les cellules de tableur pour le stockage en mémoire morte. Il permet à la fois l'exécution automatique de programmes et l'opération manuelle pour surcharger des instructions spécifiques.
La simulation couvre les concepts fondamentaux de l'architecture matérielle, notamment le prototypage de portes logiques, l'extraction d'instructions et la gestion de la mémoire. Cet environnement permet la visualisation des interactions entre les registres et la mémoire système via une logique pilotée par formules.
Features
- Computer Architecture - Provides a visual environment for learning hardware components and their interactions within a CPU.
- Assemblers - Provides a tool that translates custom assembly source code into a spreadsheet-compatible ROM format.
- Cell-Based State Storage - Uses cell values as the primary memory and register storage to maintain the machine state.
- CPU Architectural Simulators - Simulates a 16-bit CPU architecture for the purpose of architectural exploration and functional verification.
- Spreadsheet-Based CPU Simulators - Implements a functional 16-bit processor within a spreadsheet to demonstrate computer hardware logic.
- CPU Architectures - Implements a simplified hardware architecture to demonstrate the fundamentals of machine cycles.
- Spreadsheet-Based Emulators - Emulates a complete computer architecture where system state and RAM are managed within a grid of cells.
- Custom Assembly Programming - Supports writing low-level assembly code to be executed by the simulated processor.
- Logic Gate Simulations - Implements CPU operations and arithmetic logic units using nested spreadsheet formulas.
- Formula-Based - Builds a virtual machine environment using spreadsheet formulas to test processor instructions.
- Spreadsheet Coordinate Mapping - Simulates RAM by mapping memory address indices to specific spreadsheet cell coordinates.
- Instruction-Level Execution Controls - Provides a toggle between automatic execution and manual operation to override specific instructions.
- Emulator Execution Controls - Allows users to pause automatic recalculation to manually step through individual CPU instructions.
- Instruction Fetch Units - Implements the mechanism for retrieving the next operational code based on the program counter.
