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    Author Topic: [ANN] Fibonacci Info and questions  (Read 104216 times)
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    WindMaster
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    December 29, 2013, 01:50:36 AM
    Last edit: December 29, 2013, 02:39:49 AM by WindMaster
     #241

    Sorry if this has been asked before, but will it work with Scrypt-Jane, such as YaCoin?
    Thanks,
    Flippyfeet

    Been a bit busy, I will ask my engineer to be sure. But looking at what jane is (Chacha) it probably would yes.

    Negative.  The logic would be radically different between a Litecoin-oriented Salsa20/8 (1024,1,1) implementation and a YACoin-oriented ChaCha20/8 (N,1,1) + Keccak512 implementation.  There is very little similarity between the scrypt variant used in Litecoin and the scrypt variant used in YACoin.  Additionally, YACoin uses variable N while Litecoin has fixed N=1024.  For YACoin, N is currently 32768, and will change to 65536 on 31 May 2014.  Details on the variable N schedule can be found in my post here:

    https://bt.irlbtc.com/view/206577.msg2162620#msg2162620

    When YACoin launched at N=32, I adapted 4 of our earlier FPGA LTC prototypes (populated with XC7A200T's and a pile of DDR3) to YACoin instead.  It was real easy pickings at N=32.  At N=64, not so much.  At N=128, I stopped and moved back to a different more efficient hardware solution for YACoin mining.

    Variable N would make ASIC implementation a real bitch, since you can't optimize the mixing function's logic for a specific value of N like you can with Salsa20/8 (1024,1,1).
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