Antminer S1 is the 1st generation of Bitcoin mining hardware based on Bitmain Technologies chip marked as BM1380. There are 64 chips (2 boards, 32 chips each) per miner offering hash rates at around 120GH/s under normal conditions. In this project I present my approach at reverse engineering the communication protocol the chips use in order to make them do some actual work (i.e. mine some Bitcoins).
All the information I've gathered about the hashing chips and how those communicate with the outside world is available here: http://mightydevices.com/?p=615
Feel free to reproduce if you happen to have a spare S1 lying around!
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