Re: [myhdl-list] Starting with MyHDL and trying to do my Cordic Module
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jandecaluwe
From: André P. <and...@gm...> - 2014-07-04 13:24:28
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Thanks Jan, I understand it now. Christopher, I made the alterations with your suggestions, however the same error when I try to convert still happens. http://pastebin.com/E2JGAJ50 KeyError: 'real_reg' and a long traceback list error Any ideas? Also, I cannot access this link: http://www.edaplayground.com/x/eW Says I don't have the permission required. Cheers On Fri, Jul 4, 2014 at 9:44 AM, Jan Decaluwe <ja...@ja...> wrote: > On 07/04/2014 02:38 PM, André Prado wrote: > > I meant that you can't do this in VHDL but I thought that in MyHDL you > could do that. > > http://myhdl.org/start/why.html#signals-and-variables-like-vhdl > > > > > Thanks for the Explanation, I look forward to translate the code of my > product from VHDL to MyHDL :), still in the learning process but the power > of Python makes VHDL looks out dated hehe. > > > > Cheers > > > > > > On Fri, Jul 4, 2014 at 9:33 AM, Christopher Felton < > chr...@gm... <mailto:chr...@gm...>> wrote: > > > > On Fri, Jul 4, 2014 at 6:50 AM, André Prado <and...@gm... > <mailto:and...@gm...>> wrote: > > > > So, I can't use the same signal as a signal and a variable. Just > like VHDL :) > > > > > > Not sure what you mean? You can mix the signal assignment > > and variable assignment in VHDL? If you declare a signal you > > need to use "<=" if a variable ":=". > > > > MyHDL only has one assignment operator, "=". But the types > > need to match. You need to determine if you really want a signal > > or a variable: > > http://www.jandecaluwe.com/hdldesign/signal-assignments.html > > > > > > 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 > > intbv information, because the reference would be assigned to > > 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>". > > > > I made changes to your original and it converts, but I did not > > check if it still passes the testbench: > > http://www.edaplayground.com/x/eW > > > > Note: conversion to Verilog will fail to compile with a Verilog > > compiler because some of the signal/variable names are reserved > > words (e.g. "real"). It has been on our todo list to check for > > reserved words in conversion. > > > > Regards, > > Chris > > > > > ------------------------------------------------------------------------------ > > 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... <mailto: > myh...@li...> > > https://lists.sourceforge.net/lists/listinfo/myhdl-list > > > > > > > > > > -- > > Atenciosamente/Regards > > André Castelan Prado > > > > > > > ------------------------------------------------------------------------------ > > 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 > > > > > -- > Jan Decaluwe - Resources bvba - http://www.jandecaluwe.com > Python as a HDL: http://www.myhdl.org > VHDL development, the modern way: http://www.sigasi.com > World-class digital design: http://www.easics.com > > > ------------------------------------------------------------------------------ > 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 > -- Atenciosamente/Regards André Castelan Prado |