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Altera_Forum's avatar
Altera_Forum
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21 years ago

Does Nios II custom instruction need clk_enable?

Hi all!!! http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/rolleyes.gif I have a Nios II project with 3 custom instructions that export the signals to a shared user logic, out of...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

If I understood the question correctly, yes you should be using seperate clk enables. That&#39;s how your custom instruction hardware knows that the data is for it (the ALU signals are not going to get masked from your hardware so other custom instructions or the ALU itself could cause your hardware to "start").

If I misunderstood your question I apologize (I&#39;ll take another crack at it if I did).