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Visitor
Visitor
4,317 Views
Registered: ‎10-06-2016

vcc and GND signals

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hi

when using signals with the following names،( in ISE) their color comes in red. why?

signal GND,VCC      : std_logic;

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Moderator
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Registered: ‎07-21-2014

Re: vcc and GND signals

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@fpgaamoz

 

When the design uses constant1 and constant0 then tool connects such logic/nets to the VCC and GND respectively.

 

Thanks,
Anusheel
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Community Manager
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Registered: ‎07-23-2012

Re: vcc and GND signals

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Those are unisim/simprim reserve words. In ISE Text Editor, you have the color code for text based on the words. Please refer to https://www.xilinx.com/support/documentation/sw_manuals/xilinx11/ite_r_text_color_coding.htm for more details on this.
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Visitor
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Registered: ‎10-06-2016

Re: vcc and GND signals

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thak you for your reply. i had another question. VCC and GND is used to what to do?

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Moderator
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Registered: ‎07-21-2014

Re: vcc and GND signals

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@fpgaamoz

 

When the design uses constant1 and constant0 then tool connects such logic/nets to the VCC and GND respectively.

 

Thanks,
Anusheel
-----------------------------------------------------------------------------------------------
Search for documents/answer records related to your device and tool before posting query on forums.
Search related forums and make sure your query is not repeated.

Please mark the post as an answer "Accept as solution" in case it helps to resolve your query.
Helpful answer -> Give Kudos
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View solution in original post