Alsys Ada Compiler for MS-DOS

Alsys Ada Compiler for MS-DOS

[Debs Wisbey]

All,

I currently have a software program that is written in Ada and built
using the Alsys Ada 286/DOS compiler v4.3, with the target hardware
being an old 286 with operating system MS-DOS v4.01.  I want to port
the software to a more modern compiler but am unable to upgrade any of
the target hardware/software.

Can anyone suggest any good Ada compilers for DOS that will enable me
to do a straight port of the software without having to change the
target hardware/software specifications?

Thank you for any help that you can give me,
Debs.

RE: Alsys Ada Compiler for MS-DOS

[Beard, Frank Randolph CIV]

Alsys merged with Thompson, who merged with Aonix.
So, you might want to contact Aonix (www.aonix.com)
and see if they have any alternatives.

Frank

-----Original Message-----
From: Debs Wisbey [mailto:debs.wisbey@amsjv.com]

All,

I currently have a software program that is written in Ada and built
using the Alsys Ada 286/DOS compiler v4.3, with the target hardware
being an old 286 with operating system MS-DOS v4.01.  I want to port
the software to a more modern compiler but am unable to upgrade any of
the target hardware/software.

Can anyone suggest any good Ada compilers for DOS that will enable me
to do a straight port of the software without having to change the
target hardware/software specifications?

Thank you for any help that you can give me,
Debs.
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Re: Alsys Ada Compiler for MS-DOS

[Gautier Write-only]

David C. Hoos:

> Check out the GNAT for DOS home page
> 
> http://www.mysunrise.ch/users/gdm/gnatdos.htm

I'm afraid the executables won't run on a 286, only on a 386 or later.
GNAT/DOS is a 32-bit, protected mode, virtual memory beast.

For a true real DOS compiler I'd look at... http://www.rrsoftware.com/
________________________________________________________
Gautier  --  http://www.mysunrise.ch/users/gdm/gsoft.htm

NB: For a direct answer, e-mail address on the Web site!

Re: Alsys Ada Compiler for MS-DOS

[Stephen Leake]

debs.wisbey@amsjv.com (Debs Wisbey) writes:

> All,
> 
> I currently have a software program that is written in Ada and built
> using the Alsys Ada 286/DOS compiler v4.3, with the target hardware
> being an old 286 with operating system MS-DOS v4.01.  I want to port
> the software to a more modern compiler but am unable to upgrade any of
> the target hardware/software.

Just out of curiosity, why can't you change the target OS/hardware?

-- 
-- Stephe

Re: Alsys Ada Compiler for MS-DOS

[Randy Brukardt]

Debs Wisbey wrote in message ...
>All,
>
>I currently have a software program that is written in Ada and built
>using the Alsys Ada 286/DOS compiler v4.3, with the target hardware
>being an old 286 with operating system MS-DOS v4.01.  I want to port
>the software to a more modern compiler but am unable to upgrade any of
>the target hardware/software.
>
>Can anyone suggest any good Ada compilers for DOS that will enable me
>to do a straight port of the software without having to change the
>target hardware/software specifications?


The only Ada compiler that I know of that's still supported targeting
MS-DOS and 186/286's is ours: Janus/Ada (at http://www.rrsoftware.com).
And that's still an Ada 83 compiler; we never made an Ada 95 version.

                Randy.

Re: Alsys Ada Compiler for MS-DOS

[Debs Wisbey]

"Randy Brukardt" <randy@rrsoftware.com> wrote in message news:<vcss9g3e338ka1@corp.supernews.com>...
> Debs Wisbey wrote in message ...
> >All,
> >
> >I currently have a software program that is written in Ada and built
> >using the Alsys Ada 286/DOS compiler v4.3, with the target hardware
> >being an old 286 with operating system MS-DOS v4.01.  I want to port
> >the software to a more modern compiler but am unable to upgrade any of
> >the target hardware/software.
> >
> >Can anyone suggest any good Ada compilers for DOS that will enable me
> >to do a straight port of the software without having to change the
> >target hardware/software specifications?
> 
> 
> The only Ada compiler that I know of that's still supported targeting
> MS-DOS and 186/286's is ours: Janus/Ada (at http://www.rrsoftware.com).
> And that's still an Ada 83 compiler; we never made an Ada 95 version.
> 
>                 Randy.

I was wondering, could I compile on Win NT using Janus/Ada 83 and then
run the executable on a 286?

Thank you, Debs.

Re: Alsys Ada Compiler for MS-DOS

[Randy Brukardt]

Debs Wisbey wrote in message ...
>"Randy Brukardt" <randy@rrsoftware.com> wrote in message
news:<vcss9g3e338ka1@corp.supernews.com>...
>> Debs Wisbey wrote in message ...
>> >All,
>> >
>> >I currently have a software program that is written in Ada and built
>> >using the Alsys Ada 286/DOS compiler v4.3, with the target hardware
>> >being an old 286 with operating system MS-DOS v4.01.  I want to port
>> >the software to a more modern compiler but am unable to upgrade any
of
>> >the target hardware/software.
>> >
>> >Can anyone suggest any good Ada compilers for DOS that will enable
me
>> >to do a straight port of the software without having to change the
>> >target hardware/software specifications?
>>
>>
>> The only Ada compiler that I know of that's still supported targeting
>> MS-DOS and 186/286's is ours: Janus/Ada (at
http://www.rrsoftware.com).
>> And that's still an Ada 83 compiler; we never made an Ada 95 version.
>>
>>                 Randy.
>
>I was wondering, could I compile on Win NT using Janus/Ada 83 and then
>run the executable on a 286?

Well, the vanilla DOS version would run on Win NT (it is just an MS-DOS
program without much extra). But it's limited in the size of programs it
compiles (the symboltable has to fit in 640K, and Text_IO takes up more
than half of the available space). The DOS Extender hosted version of
Janus/Ada 83 (which is not limited in the size of programs) doesn't work
on Windows NT, although it does work on Windows 95/98/ME. The DOS
Extender company went out of business instead of fixing it when we
complained. :-(

It would be possible to compile a Windows NT hosted version of the
Janus/Ada 83 compiler, but it would take a bit of work (because of Ada
83-95 incompatibilies and system-dependent code). So we'd have to charge
a bit extra for that. Write me a note at randy@rrsoftware.com if you're
interested.

                  Randy Brukardt.






>Thank you, Debs.