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Alpha Blending Mixer with alpha values

Altera_Forum
Honored Contributor I
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Hello everyone. 

 

I am using Alpha Blending Mixer in my Qsys Project on Quartus 15.0. 

 

I got the need of using alpha blend option of the core. In the datasheet of VIP Suite I noticed the following "The IP core does not use alpha values for the background layer (a0); you must tie the alpha0 port off to 0 when you instantiate the IP core in the parameter editor." 

 

What's the correct way to instantiate an Avalon Streaming Sink to a hard value of "0" ? 

 

Thanks in advance
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