From: pvanbell@mhv.net (Paul Van Bellinghen)
Subject: Re: Why Ada is not the Commercial Lang of Choice
Date: 1997/06/21
Date: 1997-06-21T00:18:36+00:00 [thread overview]
Message-ID: <33ab1c1c.2926201@news.mhv.net> (raw)
In-Reply-To: EC03q1.J3A@world.std.com
This is all well and good when you know the exact address to set the
variable to. The problem comes with a variable of type "address" that
you need to perform masking on. I was unable to re-cast a variable of
type "address" (which was derived from unsigned integer) to an
unsigned integer so that I could mask out the lower 48 bits. That's
why I went the "unchecked conversion" route. Ada seems to be so
strictly typed that even though a variable is typed or sub-typed as
unsigned integer, it is treated as a completely different type than a
variable typed as unsigned integer.
>> Mem_Map: Integer;
>> for Mem_Map'Address use 16#B010_0040#;
>
>By the way, this will typically need a To_Address call, since in many
>implementations, type Address is not an integer type. The RM recommends
>a private type, which I think is sensible.
>
>- Bob
next prev parent reply other threads:[~1997-06-21 0:00 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-06-18 0:00 Why Ada is not the Commercial Lang of Choice Robert I. Eachus
1997-06-18 0:00 ` Dale Stanbrough
1997-06-19 0:00 ` Robert A Duff
1997-06-21 0:00 ` Paul Van Bellinghen [this message]
1997-06-20 0:00 ` Robert Dewar
1997-06-23 0:00 ` John G. Volan
1997-07-03 0:00 ` Shmuel (Seymour J.) Metz
1997-07-03 0:00 ` Robert Dewar
1997-07-06 0:00 ` Yasmiin S. Davis
1997-07-06 0:00 ` Robert Dewar
1997-07-07 0:00 ` Shmuel (Seymour J.) Metz
1997-07-04 0:00 ` Paul Van Bellinghen
1997-07-13 0:00 ` Ken Mays
1997-07-13 0:00 ` Robert Munck
1997-07-14 0:00 ` Ken Mays
1997-06-19 0:00 ` Steve Jones - JON
1997-06-19 0:00 ` Anonymous
1997-06-19 0:00 ` Peter Hermann
1997-07-17 0:00 ` Shmuel (Seymour J.) Metz
1997-06-20 0:00 ` Robert Dewar
1997-06-20 0:00 ` Don Harrison
1997-06-20 0:00 ` Roy Grimm
1997-06-20 0:00 ` Donovan Baarda
1997-06-20 0:00 ` Larry Kilgallen
1997-06-20 0:00 ` Nick Leaton
1997-06-23 0:00 ` Don Harrison
1997-06-24 0:00 ` Bertrand Meyer
1997-06-24 0:00 ` Nick Leaton
1997-07-22 0:00 ` Dr. Vladimir Il'ich Fomin
1997-06-23 0:00 ` Joachim Durchholz
1997-06-23 0:00 ` Robert Dewar
1997-06-24 0:00 ` Don Harrison
1997-06-24 0:00 ` Robert Dewar
1997-06-20 0:00 ` Robert Dewar
1997-06-21 0:00 ` Keith Thompson
1997-06-21 0:00 ` Robert Dewar
1997-06-24 0:00 ` Ken Garlington
1997-06-24 0:00 ` Robert Dewar
1997-06-28 0:00 ` Robert I. Eachus
1997-06-28 0:00 ` Robert Dewar
-- strict thread matches above, loose matches on Subject: below --
1997-06-13 0:00 Paul Van Bellinghen
1997-06-17 0:00 ` Robert Dewar
1997-06-20 0:00 ` nma123
1997-06-24 0:00 ` Adam Beneschan
1997-06-17 0:00 ` Dale Stanbrough
1997-06-17 0:00 ` Robert Munck
1997-06-18 0:00 ` Ken Garlington
1997-06-19 0:00 ` Ole-Hjalmar Kristensen FOU.TD/DELAB
1997-06-19 0:00 ` Ken Garlington
1997-06-18 0:00 ` Nick Roberts
1997-06-18 0:00 ` Peter Hermann
1997-06-20 0:00 ` Robert Dewar
1997-06-25 0:00 ` Van Snyder
1997-06-26 0:00 ` Robert Dewar
1997-06-30 0:00 ` Ralph Paul
1997-07-02 0:00 ` Joerg Rodemann
1997-07-02 0:00 ` Ralph Paul
1997-07-02 0:00 ` Joerg Rodemann
1997-06-19 0:00 ` Steve Doiel
1997-06-19 0:00 ` Anonymous
1997-07-22 0:00 ` Shmuel (Seymour J.) Metz
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