Turbo Pascal Deconstructed
2 days ago
- #Vintage Computing
- #Decompilation
- #Turbo Pascal
- Turbo Pascal 3.02A, released in 1985, was a remarkably compact executable (39,731 bytes) that included a full text editor IDE and Pascal compiler.
- Inspired by James Hague's 2011 article comparing Turbo Pascal's size to modern software, the author used Claude AI to decompile and analyze the Turbo Pascal 3.02A binary.
- Claude AI successfully interpreted the binary and created an interactive artifact displaying the decompiled code with labeled segments and extensive annotations.
- The author verified the decompilation results using Codex CLI with GPT-5.4 xhigh and found no obvious hallucinations before publishing.