AI Signal 142
LLM ports 1993 Amiga game from 68000 assembly to Godot 4
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A developer used Claude Fable 5 to port Babylonian Twins, a 1993 Amiga 500 game written in pure 68000 assembly, to Godot 4, with the LLM reading the original code, translating it, and verifying correctness by rebuilding and diffing binaries.
This is a concrete test of LLM capability on code archaeology for an architecture with likely sparse training data. The LLM completed a translation task that previously required multiple human-guided rounds, but some errors in the output went unnoticed by the original author for weeks.
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Claude Fable 5 translated 72,758 lines of 68000 assembly to Godot 4, completing all three planned steps including embedding the 1993 original inside the modern port.
The LLM operated through Claude Code with terminal and filesystem access, adding its own command-line test flags and verifying Amiga-side work by assembling with vasm and diffing output against original binaries.
A level format that required several rounds and human hints with an earlier model came out in a single pass with no hints from the developer.
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