Phone Conference P1450.1 Working Doc Subgroup
Thurs Mar 13, 10:00 am PST
Attendees:
Documents
Agenda
Review separate PDF of issues - changes-2003-02-13.pdf
Meeting discussion
Bruce Kaufmann has several dot-zero-level issues to
discuss. Greg recommended tabling these issues for direct discussion
and involvement of a dot-zero review team. Bruce accepted this.
Tony opened the question of any patents or proprietary issues in the
current discussions. There were no identified issues; the patent topic
is clear.
First discussion: review of using compare-operators against
enum-types and wfcs; source lines 57 pg 2.
Question from Doug about whether "STOP==VAR1" (as opposed to
"VAR1==STOP") was allowed. The issue here is being able to identify
the type of a sub-expression just from it's reference/name. It was proposed
that the LHS (left-hand-side) of a comparison operator must be a
variable of a type, and the RHS must be an expression of that type. This
condition added to simplify opportunities; Tony took an AI to word
this.
Second discussion was on the substitute-read-back issue - When a
signal or signal-variable is being compared, what of the values it may
contain is being compared? In particular, if a signal had a WFC that
contained an 'S' event, and an expression compared against this
signal, should the comparison be against the mapped value returned
because of the 'S', or should it be the current WFC (that contained
this 'S' event)?
The current proposal requires an escape-identifier ALWAYS when
reading-back a value, to minimize mis-interpretation. Greg recommends
that there be NO default value read-back if an escaped identifier is
not present (that it be an error if the value to return is not
identified).
This led to a discussion and concern about the size of the .1
language, and it's growing complexity. This discussion was tabled with
no resulting activity.
There was some discussion about the balloting process and directions
to next proceed. Tony proposed freezing the current Draft 15 of the
dot1 spec, opening a Draft 16, and focusing on the remaining set of
issues to address. The Working Group agreed to this. Tony will
generate the set of open issues remaining.
Meeting adjourned at 11:00 PST.
Next meeting
Next phone meeting Mar 27.
AIs