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Weird.
Fire up the RTL Netlist viewer and try to find any place where emi_addr[0] drives a flip-flop's clock pin or so.
Compilations are driven by a random seed, so you can expect small changes from one to the other.
Is it negative setup or hold slack?
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dear,rbugalho
RTL view,see the attachment.the address signal is fed to the comparator at the first level logic.
it's holdup slack now,and sometimes a setup slack report errors.
the error node(hold up ) :
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network|IP|DATA_Control|Over_IP|OP_1|ONE|PTS|LAST_OUT|FIFO_TX|dcfifo_mixed_widths:dcfifo_mixed_widths_component|dcfifo_07i1:auto_generated|delayed_wrptr_g[7]
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