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  1. August 23rd, 2020 at 22:42 | #1

    Hi Teruo,
    The generators got broken after the latest round of site component updates. It’s fixed now.
    The code is available here:

  2. Teruo Utsumi
    August 27th, 2020 at 23:12 | #2

    Thanks for the fix. Much appreciated! And thx also for the link to the code generators!!

  3. Nathan Francque
    January 28th, 2021 at 04:48 | #3

    It looks like the LFSR generator is still/maybe newly broken, I get ‘Uncaught ReferenceError: pageTracker is not defined
    at StartXHR (?page_id=275:386)
    at HTMLInputElement.onclick (?page_id=275:485)’
    after trying on a few different browsers it is the same.

  4. Tich
    July 27th, 2021 at 13:57 | #4

    Hello Evgeni.
    In your paper “A Practical Parallel CRC Generation Method” in step 4 of building H1 matrix when I run my version of crc_parallel(N_in=0x1,M_in=0) I get 0 0 0 0 0 as the result instead of 0 0 1 0 1

    My crc_parallel() calculates the checksum given N_in = message M_in = Polynomial. What am I missing?

  5. kumar
    September 15th, 2021 at 13:28 | #5

    I thought in CRC, feedback is based on polynomial and doesn’t depend the data width but I do see it changes for the same polynomial. Why is that? Also, on what basis the data bits XOR’ed as in which bits to XOR?

  6. September 15th, 2021 at 16:02 | #6

    Hi Kumar,
    In CRC, feedback depends on the data, I hope that part is clear. For parallel CRC with N data bits, the polynomial is updated N times in a single clock – that’s the whole point of having parallel CRC.

  7. Arun Kumar
    September 25th, 2021 at 06:57 | #7

    I a working on scramble of 8,16,32,64 bits by using the equation x16+x5+x4+x3+1.

    I want descramble verilog code. Can you send me the same.

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