Re: Wreal/User defined types on wires

From: Ian Wilson <ian.wilson@berkeley-da.com>
Date: Thu Mar 18 2010 - 15:20:57 PDT
Given the conflicting needs for a SystemVerilog-compatible approach, and for
additional real-valued functionality, I wonder whether a 2-pronged approach
would work:

  a) mothball wreal at the LRM 2.2 level
  b) implement a new type that doesn't have backward compatibility issues, and
      does have SystemVerilog-compatible properties
  c) when SystemVerilog/AMS becomes a reality (say 2.5 years from now), leave
      wreal in the AMS subsystem to support users but don't attempt to migrate it
      to full SystemVerilog status

It wasn't clear to me from the meeting whether Synopsys had a concrete proposal
for (b), or were just concerned about the problems introduced by changing wreal
to having 4-state attributes.

--ian
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Ian M Wilson
Architect
Berkeley Design Automation
Office: 408-496-6600 x238
Cell:   714-272-7040
ian.wilson@berkeley-da.com
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