Is there any norm to define registers?

[Altera_Forum]

Hello,everybody. 

 What I want to do is to creat a custom nios2 component. I&#39;m now writing the HDL files with verilog. According to the avalon specfication and the custom peripheral specfication, I have defined the interface signals. Besides, some registers should also be defined. My question is : whether there is any norm with which I can define these registers? Or I just do it without considering any norms, as long as it proves to work?  Replise are expected. Thanks for all. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/rolleyes.gif

[Altera_Forum]

--- Quote Start ---  originally posted by mxy_1984@Apr 17 2006, 07:18 AM hello,everybody.  what i want to do is to creat a custom nios2 component. i&#39;m now writing the hdl files with verilog. according to the avalon specfication and the custom peripheral specfication, i have defined the interface signals. besides, some registers should also be defined. my question is : whether there is any norm with which i can define these registers? or i just do it without considering any norms, as long as it proves to work?  replise are expected. thanks for all. http://forum.niosforum.com/work2/style_emoticons/<#emo_dir#>/rolleyes.gif  <div align='right'><{post_snapback}> (index.php?act=findpost&pid=14418)  --- quote end ---    --- Quote End ---   HI! Custom component has custom driverand custom registers http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif . Custom component&#39;s registers, their define and initing of registers are on your conscience.

[Altera_Forum]

Thanks! http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif

[Altera_Forum]

No norm restriction, as long as your custom logic complies with Avalon Spec. 

You will assign your registers to Avalon ports while packaing your design into Avalon standard custom peripheral.