math - How to use arithmetic shift & selector in verilog? -


I want to add selector and arithmetic changes together. But this code has failed to implement, the result is just a logical change. 

  module multiplier (x1, x2, x1x2); Input [15: 0] x1, x2; Output [15: 0] x1x2; Assign X1x2 = x2 [13]? ($ Signed (x1)>> 4'd1): 16'B 0000000000000000; Andam Module

Arithmetic changes are successful without the selector like this code. 

  module multiplier (x1, x2, x1x2); Input [15: 0] x1, x2; Output [15: 0] x1x2; X1x2 = $ signed (x1) & gt; & Gt; & Gt; 4'd1; Endmodule

How to use selector and arithmetic changes? Verilog will almost always be unsigned when it is an option and it is allowed to select the selector logic Verilog;

If the difference is the solution: there are pairs

  • Use two lines: wire [15: 0] x1_shift = $ sign (x1)> >> 4'd1; Assign X1x2 = x2 [13]? X1_shift: 16'b0;
  • Use crisp instead of brackets: assign 
      x1x2 = x2 [13]?  $ signed (x1) >>> 4'd1 } : 16'b0;

  • Hard coded changes: 

      assign x1x2 = x2 [13]? {X1 [15], x1 [15: 1]}: 16'b 0;   
     
      >  assign x1x2 = x2 [13]? ($ Sign (x1) >>> 4'd1): $ signed (16'b0);

  • You can also cast a shape with SystemWorld: 

      assign x1x2 = x2 [13]? 16 '($ sign (x1) >>> 4'd1): 16'b0; // SV Only, Verilog No

Working example.


Comments

Post a Comment

Popular posts from this blog

python - Overriding the save method in Django ModelForm -

I'm having trouble overriding a ModelForm save method. I get this error I'm: Exception type: TypeErier Exception Value: Save () found an unexpected keyword argument 'committed' My intentions include a form 3 fields Submit several values ​​for, then create an object for each combination of those areas, and to save each object file models.py class collarsult type (models.Model): id = model. AutoField (db_column = 'icontact_result_code_type_id', primary_key = true) callResult = models.ForeignKey ( 'CallResult', db_column = 'icontact_result_code_id') campaign = models.ForeignKey ( 'campaign', db_column = 'icampaign_id') CALLTYPE = models.ForeignKey ( 'CALLTYPE', db_column = 'icall_type_id') agent = models.BooleanField (db_column = 'bagent', default = true) teamLeader = models.BooleanField (db_column = 'bTeamLeader', default = true) active = models.BooleanField (db_column = Django.form...
Read more

html - CSS autoheight, but fit content to height of div -

I have a div in which there are three children- div in the left and middle div: float: left while true: float: true because it is my layout Actually will spoil, I've used ClearFix Hack: .cf {zoom: 1; }. Cf: First,. Cf: {content: ""; Display: Table; }. Cf: After {clear: both; } It still works, but I want to be the right div an indicator. So it should fill 100% of the parent unit of height. How can I complete this? PS is the full code: & Lt; / Div & gt; & Lt; Div class = "mobile_content" & gt; & Lt; H5 & gt; {{Data.titel}} & lt; / H5> & Lt; Table & gt; & Lt; TR & gt; & Lt; Th & gt; Komponist: & lt; / Th & gt; & Lt; TD & gt; {{Data.komponist}} & lt; / TD & gt; & Lt; / TR & gt; & Lt; TR & gt; & Lt; Th & gt; Instrument: & lt; / Th & gt; & Lt; TD & gt; {{Data.instrumente}} & lt; / TD & gt; & Lt; / TR & gt;...
Read more

qt - How to prevent QAudioInput from automatically boosting the master volume to 100%? -

I have been trying to use Qt5 multimedia to record audio with QAudioInput, however, when I see If QAudioInput is started, it increases the master volume of my sound device to 100%. How can I prevent QAudioInput from changing the master volume? My current development platform is Linux with PalsAdio (with flat audio disabled). How can I use QAudioInput : QAudioDeviceInfo device_info = QAudioDeviceInfo :: defaultInputDevice (); QAudio format format; Format.setSampleRate (44100); Format.setChannelCount (1); Format.setSampleSize (16); Format.setCodec ("Audio / PCM"); Format.setSampleType (QAudioFormat :: SignedInt); Format.setByteOrder (QAudioFormat :: LittleEndian); Std :: cout & lt; & Lt; Device_info.deviceName (). ToUtf8 (). ConstData () & lt; & Lt; Std :: endl; QAudioInput * default_device = new QAudioInput (device_info, format); QIODevice * default_io_device = default_device-> Start (); a QAudioInput.setVolume () method is not you I ...
Read more