[vhdl-200x] Update to proposal for arbitrary integers

From: Martin.J Thompson <Martin.J.Thompson@trw.com>
Date: Fri Oct 10 2014 - 04:07:45 PDT
Hi all,

After the discussions in the last telecon, I have updated the Arbitrary Integers page:

http://www.eda-twiki.org/cgi-bin/view.cgi/P1076/ArbitraryIntegers

In summary, the proposal is to


*         Expose universal_integer as a completely unconstrained integer type, (and possibly make INTEGER a constrained subtype of this.  Each tool will constrain the INTEGER to the range it currently provides for backwards compatibility.)

*         Create universal_integer'high and 'low

*         Allow logical and shift operations on universal_integers

*         Question: should conversions between UNIVERSAL_INTEGER and INTEGER be implicit or explicit?

Any comments you have will be gratefully received as always :)

Thanks,
Martin

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