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Altera_Forum
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17 years ago

Legacy DDR compilation error

Hi, in a project I have been working on for a while this message suddenly appeared: Warning: Atom "DDR1:DDR1_ddr_sdram|DDR1_auk_ddr_sdram:DDR1_auk_ddr_sdram_inst|DDR1_auk_ddr_datapath:ddr_io|...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

This is most likely because the registers on the DDR read path have been optimised away.

You should be able to see messages to this effect in the synthesis report. One quick way to stop them getting optimised away is to wire all the local_data bits to a (virtual) pin via a big or gate.