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This conference talk by Sara Vieira at React Day Berlin 2024 explores the fascinating process of building an emulator using JavaScript. Discover how emulation allows one system to imitate another, such as running PlayStation 1 games on a computer. Learn about both hardware and software emulation approaches, with a focus on implementing a Chip 8 emulator in JavaScript despite the language's limitations for this purpose. The presentation covers essential concepts including hexadecimal notation, bitwise operators, CPU and memory emulation, and handling instructions through switch statements. Sara demonstrates the Chippy emulator in action while addressing important legal considerations around emulation, warning against distributing ROMs or proprietary BIOS files. The talk also delves into reverse engineering techniques, JavaScript's performance challenges for emulation, and provides inspiration for creating your own emulation projects. Perfect for developers interested in game development, low-level programming, or the technical challenges of system emulation.
