ARNE: At the risk of eliciting more answer than you want, I am forwarding
your 4 questions to the [log in to unmask] advocacy/discussion group and the
extended circle of SIGAda officers. I think you will receive a lot of
informed inputs which will be better than one person's perspective. I also
think most of these groups will also be very interested to read the account
of your 20-year involvement with Ada and successful space experience (some
of which some of us are aware).
I will give you an early answer to your question #3 -- YES, I think a
presentation about your Ada microprocessor is appropriate for a future
SIGAda conference, and that it will favorably received. There will be a
hard-core minority of SIGAda members very interested in this hardware
relationship, even if the majority are more software-centric and would
attend a different session.
-Hal Hart, ACM SIGAda Past Chair
Arne Carlsson <[log in to unmask]> wrote:
>Date: Wed, 24 Nov 1999 06:34:15 +0100
>To: [log in to unmask]
>From: Arne Carlsson <[log in to unmask]>
>Subject: Ada in Hardware
>Cc: [log in to unmask], [log in to unmask],
> [log in to unmask], [log in to unmask]
>X-MIME-Autoconverted: from quoted-printable to 8bit by
>cardinal.prod.itd.earthlink.net id VAA07850
>Dear Mr Hart,
>I have a couple of Ada questions, which are important for decisions about
>Ada activities in the company I work for, Saab Ericsson Space in Sweden.
>I know you have been involved in Ada activities for many years, and I think
>you can give fair answers on these questions. I should appreciate very much
>if you take time for an answer.
>We have developed an Ada microprocessor for real-time embedded space
>applications. Today this chip is manufactured in a rad-hard process at
>Honeywell in US. Because Ada real-time functions are implemented in silicon
>on the chip, these functions are real fast during runtime. This allows Ada
>applications, which have not been possible before. What do you think about
>implementation of Ada functions in silicon (hardware), is it of interest for
>the Ada community, or are only software implementations of interest? What
>does the 'Real-Time Environment Working Group' say if no code is needed for
>Ada task scheduling and switching, for example?
>Right now this Ada chip is used in a space project named Rosetta.
>C-programming was required so we ported GNU C-compiler and debugger to this
>Ada chip. Porting GNAT to this Ada chip should result in a very high
>performance Ada-compiler/processor combination. Do you think this could be
>seen as a positive support for the Ada language by the Ada community? If
>"yes", do you think we can get an official "yes" in order to simplify
>funding of the work to port GNAT?
>Do you think this Ada microprocessor is of interest for any conferences?
>Can you see any interest of this Ada microprocessor from projects in US?
>Saab Ericsson Space has developed on-board computers for space applications
>since 1972, e.g. in the ARIANE-launcher and SPOT-satellite programmes. The
>first version of the Ada microprocessor was presented about eight years ago,
>for example at the TRI-Ada'91 conference. It was proven in space flight the
>first time 1995. We have been involved in Ada for about 20 years, and we
>have also developed an Ada compiler (not validated) for the Ada chip. I
>myself visited a 'bird-of-a-feather' session at the 'AIAA 2nd COMPUTERS IN
>AEROSPACE CONFERENCE', Los Angeles 1979, where the name 'Ada' was used for
>the new programming language. It was the first time I heard the name 'Ada'
>used for this language.
>| Arne Carlsson Telephone: +46 31 735 4367 |
>| Saab Ericsson Space Telefax: +46 31 735 9520 |
>| S-405 15 Göteborg E-mail: [log in to unmask] |