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Previous discussion: Microsoft BASIC for 6502 Microprocessor – Version 1.1 - https://news.ycombinator.com/item?id=45118392 https://news.ycombinator.com/item?id=45118392 - Sept 2025 (198 comments) Related ongoing thread: Microsoft open-sources "the earliest DOS source code discovered to date" - https://news.ycombinator.com/item?id=48253386 https://news.ycombinator.com/item?id=48253386 - May 2026 (110 comments)