Re: [myhdl-list] Starting with MyHDL and trying to do my Cordic Module

[André P. <and...@gm...>]

Just to give a feedback. It was working, just that it is faster than my old
module and that was causing me trouble.
Cheers
Em 09/07/2014 07:35, "Jan Coombs" <jen...@mu...>
escreveu:

> On 04/07/14 13:33, Christopher Felton wrote:
> >    . . .
> >
> >
> >     What is the difference between assigning a value with [:] and
> >     without it? All the intbv values need a [:] ?
> >
> >
> > In Python everything is a reference
> >
> >     x = intbv(0, min=-4, max=4)
> >     y = intbv(0, min=-8, max=8)
> >     # ...
> >     x = 2
> >     y[:] = 4
> >     assert isinstance(x, intbv)   # will fail
> >     assert isinstance(y, intbv)   # will pass
> >
> > The [:] indicates you are updating the value of the intbv type
> > (updating all the bits).  If you didn't do this you would loose
> > the to
> > intbv information, because the reference would be assigned to
> > will start
> > another type.  But in our HDL we need to know the types we are
> > dealing with (we remove some of the dynamicism :)
> >
> > Yes, all "variable" intbv need "[:] = <new value>".
>
> Thanks, I'd completely missed this point, even though I've paid
> close attention to discussions about the use of signals and variables.
>
> If I had known this three years ago I might well have finished my
> novel processor project by now, and would not be living in a house
> in which all the walls are decorated with skull impressions.
>
> Jan Coombs.
>
>
>
>
> ------------------------------------------------------------------------------
> Open source business process management suite built on Java and Eclipse
> Turn processes into business applications with Bonita BPM Community Edition
> Quickly connect people, data, and systems into organized workflows
> Winner of BOSSIE, CODIE, OW2 and Gartner awards
> http://p.sf.net/sfu/Bonitasoft
> _______________________________________________
> myhdl-list mailing list
> myh...@li...
> https://lists.sourceforge.net/lists/listinfo/myhdl-list
>