Comments (2)
Ah, I think I know this issue. I'll take a look.
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Ok, I thought it was the decoder using different 4 input logic gates, but I was wrong about the cause of this. The only one that sticks out, and only a little, is nor4b_2. From the middle of a macro, just the AND[0-7] gates showing:
The cause of the uneven row length turns out to be a variable number of clkbuf_2 packed per row, but only the ones on the right hand side cause the issue. Here with clkbuf_2 cells also displayed:
I haven't gone after which specific clkbuf_2 instances these are yet...
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