Thanks, it is quite fast, but doesn't seem to match parity I have. My specification was perhaps ambiguous.

I tried online parity calculator from here.

For example, I entered my hex data 7EA0F6A0 and clicked 'use extra parity bit'. Then the hamming code it generated is 0111111 (The CGI code for this is such that it puts the code in LSB bits for some reason).

With the Perl code, I see ECC as 0110110.

In reply to Re^8: ECC computation by savangadi
in thread ECC computation by savangadi

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