Built a high-fidelity ZX Spectrum 48K emulator in JavaScript—100% coded by Claude Sonnet 4.5! 🎮 I directed the entire development through prompts only. Claude Code wrote: - Complete Z80 CPU emulation with cycle-accurate timing - ULA video/audio rendering with Web Audio API
We’re running a “Built with Claude Sonnet 4.5” challenge. We want to see the coolest things you can build with 4.5 in the next week. Four winners will receive one year of Claude Max 20x and $1k in Claude API credits.
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