s-dd1

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

A SNES cartridge image as a file rather than an address space: strips copier stubs, joins split sets, identifies a dump by digest, and rewrites the header to declare no coprocessor with the checksum recomputed across every mirror. Measured against 7,317 real cartridges.