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Not only the PCB is costly,
also soldering the chip is more and more difficult.
Now even with lower pin number, the packages have very fine pitch.
Furthermore, modern FPGAs need several supply voltages,
some are very low but must be of very low resistence.
This is difficult to do, and until...
Re: CRC calculation problem
I have worked on CRC methods recently.
I would recommend you the following:
start with data, which contains just a single '1', all other 0.
This should give you a hint of what goes wrong.
You should consider, that both methods you described, SW and HW work
with...
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