Cypher_Stack/RandomWOW
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tevador 2018-11-02 17:43:21 +01:00 committed by GitHub
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@ -93,7 +93,7 @@ An 8-bit immediate value that is used by the CALL instruction as jump offset.
All ALU instructions take 2 operands A and B and produce result C. All ALU instructions take 2 operands A and B and produce result C.
|opcodes|instruction|signed|A width|B width|C|C width| |opcodes|instruction|signed|A width|B width|C|C width|
|-|-|-|-|-|-|-|-|-| |-|-|-|-|-|-|-|
|TBD|ADD_64|no|64|64|A + B|64| |TBD|ADD_64|no|64|64|A + B|64|
|TBD|ADD_32|no|32|32|A + B|32| |TBD|ADD_32|no|32|32|A + B|32|
|TBD|ADD_16|no|16|16|A + B|16| |TBD|ADD_16|no|16|16|A + B|16|
@ -132,7 +132,7 @@ If `C` is shorter than 64 bits, it is zero-extended before the result is written
### FPU instructions ### FPU instructions
|opcodes|instruction|C| |opcodes|instruction|C|
|-|-|-|-|-| |-|-|-|
|TBD|FADD|A + B| |TBD|FADD|A + B|
|TBD|FSUB|A - B| |TBD|FSUB|A - B|
|TBD|FMUL|A * B| |TBD|FMUL|A * B|
@ -186,4 +186,4 @@ The program is initialized from a 256-bit seed value using a suitable PRNG. The
## Result ## Result
When the program terminates (the value of `ic` register reaches 0), the register file and the stack are hashed using the Blake2b hash function to get the final PoW value. The generation/execution can be chained multiple times to discourage mining strategies that search for programs with particular properties. When the program terminates (the value of `ic` register reaches 0), the cache, the register file and the stack are hashed using the Blake2b hash function to get the final PoW value. The generation/execution can be chained multiple times to discourage mining strategies that search for programs with particular properties.