Writing an emulator in JavaScript?

on YouTube ↗27m

" summary

Builds a CHIP-8 emulator in JavaScript/TypeScript that actually runs an open‑source breakout ROM, using a 64x32 monochrome canvas for pixels and the Web Audio API beep for sound. Implements an 8‑bit CPU with 4096 memory locations and 16 registers, decodes 16‑bit opcodes with bitwise operators and hex (nibble) math, steps instructions at 60Hz, and uses a large switch to handle every opcode — it works, but imperfectly.

AI-written summary · about

" chapters (12)

1. 0:00Introduction
2. 1:30Emulation legality
3. 3:40Hardware vs software emulation
4. 5:03JavaScript challenges
5. 6:09Core emulator components
6. 7:32Screen emulation with canvas
7. 11:26Sound with Web Audio API
8. 13:158-bit CPU architecture
9. 15:45ROM instructions and hex
10. 19:18Decoding and executing instructions
11. 21:51Bitwise operations
12. 25:26Live demo

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