RE: 4 State Logic Proposals

Per wrote:
>at the last meeting we managed to agree that we should support 
>something more than the 2 state logic types in the function 
>based interface.  We did not settle on what `more' means.  It 
>is my understanding that Russ' original request was based on 
>the desire to allow the 4 state logic types to be used such 
>that the effort of porting transactors to the SCE-MI subset of 
>DPI is reduced.  Russ, correct me if I'm wrong here, but I 
>believe you never asked for hardware support of 4-state logic 
>nor the ability to transport X and Z values across the interface.
>


That's right. What I asked for is support of 4-state data types on
both the SV and C sides. That is to say: a requirement to parse 4-state
syntax like "logic" and "integer" without aborting due to an error.
Within that I favor a coercion (user settable) of (Z,X) types into 2-state
values with
the compiler issuing or logging a warning. But the data type support I
believe is
much more important.
      

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---    Russ Vreeland (949)926-6143  ---
---    vreeland@broadcom.com        ---
---    Senior Principal Engineer    ---
---    Broadcom Corporation         ---
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