WARNING:Xst:2677 - Node <ad_d_4> of sequential type is unconnected in block <DDS>.
WARNING:Xst:1895 - Due to other FF/Latch trimming, FF/Latch <odata1_2> (without init value) has a constant value of 0 in block <V_measure>.
WARNING:Xst:2734 - Property "use_dsp48" is not applicable for this technology.
WARNING:Xst:2211 - "D:/example/scan/dds.vhd" line 58: Instantiating black box module <sin>.
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5楼
好吧。
WARNING:Xst:2677 - Node <ad_d_4> of sequential type is unconnected in block <DDS>.
连线ad_d_4没有连接到DDS模块
WARNING:Xst:1895 - Due to other FF/Latch trimming, FF/Latch <odata1_2> (without init value) has a constant value of 0 in block <V_measure>.
ad_d_4输出被固定在了0，自己检查一下什么原因
WARNING:Xst:2734 - Property "use_dsp48" is not applicable for this technology.
是ISE9.1的BUG，后续版本已经修正
http://www.xilinx.com/support/answers/25090.htm
WARNING:Xst:2211 - "D:/example/scan/dds.vhd" line 58: Instantiating black box module <sin>.
这个无所谓，不用管
WARNING:Xst:2677 - Node <ad_d_4> of sequential type is unconnected in block <DDS>.
连线ad_d_4没有连接到DDS模块
WARNING:Xst:1895 - Due to other FF/Latch trimming, FF/Latch <odata1_2> (without init value) has a constant value of 0 in block <V_measure>.
ad_d_4输出被固定在了0，自己检查一下什么原因
WARNING:Xst:2734 - Property "use_dsp48" is not applicable for this technology.
是ISE9.1的BUG，后续版本已经修正
http://www.xilinx.com/support/answers/25090.htm
WARNING:Xst:2211 - "D:/example/scan/dds.vhd" line 58: Instantiating black box module <sin>.
这个无所谓，不用管
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