SNES S-DD1 decompressor in Python. Checked against the snes9x reference decoder on 4,000 golden vectors covering all 16 plane and context combinations, generated from pseudo random input so the evidence ships without any game data
emulator compression nintendo emulation reverse-engineering decompression snes retrocomputing coprocessor super-famicom super-nintendo hardware-emulation arithmetic-coding entropy-coding retro-gaming sdd1 star-ocean street-fighter-alpha-2 s-dd1 golden-vectors
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Updated
Sep 6, 2026 - Python