Bitcoin antminer s1
Chips start to look for valid nonce beginning at starting nonce which is configured using address signals. Operation Chip is ready for bitcoin antminer s1 just after powering up no need for any form of initialization if you are happy with default clock frequency of MHz. Because of that it is essentinial from the performance point of view to know how much time it is needed for the chain to do the full nonce search and after that time has passed we need to switch to the new bitcoin antminer s1 as soon as possible. S1 has these equally spaced like 0x00, 0x08, 0x10 … 0xf8, so that each chip covers different and equal in size, 0x07FFFFFF area of nocne value search.
Both boards produced the same hash rate no noticable difference over time. Every response is always 5 byte long which eases the processing. Chip is ready for work just after powering up no need for any form bitcoin antminer s1 initialization if you are happy with default clock frequency of MHz. Nonce Response Emitted every time a valid nonce is found.
Chain Inactive Deactivates chaining which results in only the first chip being operational. Single hashing board of S1 uses only one crystal oscillator, all other chips derive their clocks from preceding chips in the chain. Bitcoin antminer s1 using ALL bit causes every single chip to produce response of bitcoin antminer s1 own. Command used to set the operating frequency. Set Frequency Byte 0  Byte 0 [6:
Chips report nonces that result in hashes with at least 32 leading zeros. Not very useful for normal operation. All done around Duplex streams for the sake of simplicity. Format resembles what can be bitcoin antminer s1 in BM datasheetwhich means that not a whole lot has changed over time. Broadcasting using ALL bit bitcoin antminer s1 every single chip to produce response of its own.
PLL status register carries scrambled bits of frequency bitcoin antminer s1 words bits in table use the same notation as in Set Frequency command Read Register Byte 0  Byte 0 [6: Commands Format bitcoin antminer s1 what can be found in BM datasheetwhich means that not a whole lot has changed over time. Higher clock frequencies require higher core voltages more dissipation, less efficiency. No CRC is included. Work ID is used for pairing Nonce Responses with Work Vectors, you can choose any number that fits in this field, it will simply be copied to Nonce Response.
Schematics of S1 reveal information about the functionality of certain pins. Commands — 4 byte messages ended with CRC. Chain awaits for 64 bytes of bitcoin antminer s1 data after which it stars searching for a valid nonce.
S1 hashing boards use 2mm connectors for control signals connector marked as CTRL but I found that standard jumper cables 2. Deactivates chaining which results in only the first chip being operational. Command useful for determining the length and addressing of the chips that build up the chain as well as making sure that Bitcoin antminer s1 settings are applied as requested.
Schematics of S1 reveal information about the functionality of certain pins. Command used to set the bitcoin antminer s1 frequency. Communication There are two types of messages that chips recognize: Does not provide a way to address a single chip from the chain not that useful when you think about itso it only makes sense to use it with ALL bit set.