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ERROR:Place:1726 - Could not find an automatic placement for the following components:
BUSCLK of type GCLK IOB is unplaced.
XLXI_17 of type DLL is unplaced.
XLXI_23 of type GCLK BUFFER is unplaced.
XLXI_27 of type GCLK BUFFER is unplaced.
XLXI_18 of type DLL is unplaced.
XLXI_19 of type GCLK BUFFER is unplaced.
ERROR:Place:1727 - Xilinx requires using locate constraints to replace such connected GCLK/GCLKIO/DLL components.
Похоже он сам не хочет размещать автоматом. Но где задать эти "locate constraints" для "GCLK/GCLKIO/DLL" компонент, я не нахожу.
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