Re: Regarding support of wreal

Bresticker, Shalom wrote:

>In digital simulation, what interests me are states 0, 1, x, z.
>I can have different resolution functions like wired-and, etc.
>But I don't model the states as 3.14 V.
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 From a functional perspective if you are using an event driven 
simulator it will work much the same if you use 0,1,X or 0.0,1.0 and NaN 
(although the later will probably use more memory and run slower). Just 
because you decide to give '1' an actual voltage value doesn't make it 
an analog simulation.

Given the need for multiple voltage domains on chips these days, maybe 
using voltage would be less error prone :-)

Kev.

>Shalom
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>>-----Original Message-----
>>From: Kevin Cameron [mailto:kevin@sonicsinc.com]
>>Sent: Tuesday, August 08, 2006 10:52 AM
>>To: Bresticker, Shalom
>>Cc: Sri Chandra; Jonathan David; Verilog-A Reflector; Martin O'Leary
>>Subject: Re: Regarding support of wreal
>>
>>Bresticker, Shalom wrote:
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>>>Sure. But that is no longer simulation of digital logic.
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>>Open-collector/pull-up circuits don't count then?
>>
>>[As someone who builds simulators, the only meaningful distinction is
>>whether you need a matrix solver or not.]
>>
>>Kev.
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>>>>I don't think it's unreasonable to want to do something like sum
>>>>currents at a node using a resolution function. There is a lot of
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>>analog
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>>>>behavioral modeling you can do without using a solver.
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>>>>
>>>Shalom
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>>>
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