From: Al Johnston <sofeise@mindspring.com>
Subject: gnat/ppc and a32 blt transfers
Date: Wed, 01 Nov 2000 14:47:35 -0500
Date: 2000-11-01T19:47:04+00:00 [thread overview]
Message-ID: <3A007357.FF3475A0@mindspring.com> (raw)
We are running gnat/solaris->ppc. our cpu cards are mvme2700 in a 64x
vme chassis.
I am having trouble with 64 bit accesses from the cpu to some of our
vme (slave) cards. The slaves do not like the MBLT (AM=0c) accesses
that the compilers code is causing to be used on the bus.
So what I need to do is write my own ":=" and relational operators
that access the 64bit entity via two 32 bit reads/writes.
I was wondering if this would be an appropriate place you use
ada95's "controlled types"?
If so, how much overhead does this involve.
thanks.
-al
next reply other threads:[~2000-11-01 19:47 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-11-01 19:47 Al Johnston [this message]
2000-11-01 20:52 ` gnat/ppc and a32 blt transfers Robert Dewar
2000-11-02 4:55 ` DuckE
2000-11-02 14:26 ` Robert A Duff
2000-11-02 19:58 ` Al Johnston
2000-11-04 5:02 ` Robert Dewar
2000-11-04 0:00 ` Al Johnston
2000-11-05 0:00 ` Florian Weimer
2000-11-04 0:00 ` David Starner
2000-11-06 0:00 ` Robert Dewar
2000-11-11 6:38 ` David Thompson
2000-11-06 7:39 ` tmoran
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