Re: [ethmac] wave forms!

[Mathias <azt124@hotmail.com>]

----- Original Message ----- 
From: "ajay kumar m" <mundlur_ajay@r... > 
To: ethmac@o...  
Date: 10 Oct 2002 06:02:32 -0000 
Subject: [ethmac] wave forms! 
> 
> Hi! 
> 
>   Kindly send me the basic waveforms or timing diagrams for the 
> communication controller(ethmac).so that it can be presented as a 
> part of basic design specification of the Ethernet MAC / 
> communication controller. obilige to the request!!! 

What!? Who's making requests??? I don't understand: Do WE need 
timing diagrams or do YOU need them?? I think you know the answer 
to that question, and that answer also implies who should do some -
WORK- (that's right, the awful W***-word!) to aquire the needed 
waveforms for themselves.

I'll give you some hints on the way:

1. You'd probably want the WISHBONE interface timing diagrams. I'd 
say it's a safe bet to look in the WISHBONE spec to start off. You'll have 
to find and download that pdf for yourself. (Hint: it's probably available 
from opencores webpage...)

2. You could always look in the ethmac documentation to see if there 
are any timing diagrams. (I don't remember if there are, and I'm just 
as lazy as you, so I'm not bothered to look either!)

3. Aquire the needed waveforms for YOURSELF! Oh, the horror! You'd 
need to do some work now, so let's get started right away:

3b. Download the ethmac core from opencores. This involves typing an 
URL and clicking a few links...

4. Unpack and analyze the core. Can't help you with the specifics, since 
a) I'm not familiar with your enviroment and b) I couldn't care less 
anyway. I'll trust you with enough intelligence to accomplish that by 
yourself.

5. Open your simulator of choice, Modelsim works fine for us. Load the 
ethmac design. Trace the signals you want for your presentation - 
that'd probably include the WISHBONE interface and MII signals, which 
are easily available at the core top level.

6. Run the testbench. This will indeed produce your desired waveforms 
in a matter of seconds, a minute at most. (Hard work, isn't it?)

7. Now print or dump your selected screenshots. Mission accomplished, 
very well done!

And you could be proud to say that you actually did your own 
homework instead of, not asking, but -REQUESTING- that someone else 
should do it for you. Oh, the glory...


> 
> thank you .expecting the earliest positive reply 
> 

You're most welcome. I doubt you'll consider this a "positive" reply, 
since I didn't attach a bunch of screenshots with your homework 
completed, but I sincerily hope that this is the -ONLY- reply you'll get!

And I don't really care what you "expect" or not, I just want to state 
my frim opinion:

In a nutshell - DO YOUR OWN HOMEWORK! It will benefit you the most.

kind regards
/Mathias

> regards 
> M.Ajay Kumar 
> 
> m.ajay kumar 
> 
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