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Date: Tue, 27 Aug 2013 19:27:31 -0700
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Subject: Re: [geda-user] Tutorial: VHDL with gEDA
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Reply-To: geda-user AT delorie DOT com

Does this pin issue effect circuit simulation or is this a separate topic?
On 08/27/2013 01:28 AM, myken wrote:
>> Hi, Robert
>>
>> The ipad-1 symbol as a whole is a port which takes a signal from
>> the outside and outputs it through its pin to the subcircuit where
>> it lives.  That is for the input symbol which it is, the only pin
>> is its output. Once again, the symbol is an input for a subcircuit
>> but its pin is the output of this symbol which passes an external
>> signal to the subcircuit. Therefore, your statement, that the
>> pintype attribute is not correct, is wrong. Please, eliminate it.
> I see your point. Isn't that a matter of interpretation? If I follow
> your explanation, every input pin should be marked as OUTput. Since
> every pin is connected to something on the outside which outputs its
> signal to my schematic/subcircuit.
> Don't get me wrong, if I'm wrong I correct it, I just what to understand.
> I like simple, so I use the signal direction. If its going in its mark
> IN, if its going out its mark OUT.
> Besides that its very confusing for anyone using vhdl (or verilog I
> think) to put a port marked as OUT into a schematic which translate
> into a signal defined as IN in the vhdl code.
> But like I said its a matter of interpretation or even taste. Has
> anyone else have input on this?
>>
>> Then, I found two typos in your text: 'Frst', and 'rafrc' instead
>> 'gafrc'.
> Thank you very much. I'll correct them.
>>
>> And please consider adding your tutorial to the gEDA wiki.
>>
>> Thanks
>>
> Definitely, if its considered good enough.
>
>