This is a near perfect hack that adds the Spindash into Sonic The Hedgehog. It is perfect in execution and effect. The only thing lacking is the spin animation during peelout.
Use on a clean rom to ensure it works.
Sonic The Hedgehog (USA_ Europe).md
CRC32: F9394E97
MD5: 1BC674BE034E43C96B86487AC69D9293
SHA-1: 6DDB7DE1E17E7F6CDB88927BD906352030DAA194
SHA-256: 46160BAA06362C711C9F1A5017CB7371026444936C8AF5E93A78996CF32FF2A6