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log2 is often used to calculate counter bit widths from maximum count value and similar. It's probably an auxilary function somewhere in the SOPC IP core. The error is most likely ocurring, cause a parameter has an illegal value or is simply missing.
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Seems as though you are right. I reduced the width of the burstcount signal from 32 to 16 on the write-master and the error went away. Interestingly enough, the burstcount on my read-master is still 32 bits wide, and does not generate an error.
I'm not overly concerned about the reduced burst size (2^16 is still much larger than I need), but I am still curious as to why this is happening. According to the documentation (
http://www.altera.com/literature/manual/mnl_avalon_spec.pdf), a signal width of 32 bits is acceptable.
Honored Contributor
