Each chip is providing 8 bits of information and for 8 chips at 8 bit is your 64bit data path. The 9th chip is also providing 8 bits of data to check errors so yes the information is coming from each chip. The old parity technology was to add one bit to the end of each 8 bits, the new technology places 8 more bits at the end of the 8 sets of bits.
10010110 11100101 11010110 101010101 11101010 10101110 00011010 10101011 + 00101100
Hopefully this helps to beter understand ECC.
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