Despite porting the program from VAX Pascal to various flavours of other
Pascal, it seems you don’t recall much about the language.
Moving from Pascal to BASIC would be quite an exercise.
In VAX Pascal the reserved identifiers INPUT and OUTPUT refer to SYS$INPUT and
SYS$OUTPUT, respectively.
Here’s a simple program which prompts for user input.
program hello(input,output);
var s : varying [80] of char;
begin
write('What is your name? ');
while not eof(input) do
begin
readln(s);
if length(s) > 0 then break;
write('What is your name? ');
end;
writeln('Hello ', s);
end.
Jeremy
> On 8 Feb 2018, at 4:49 PM, Dan Gahlinger <dgahl...@hotmail.com> wrote:
>
> I found a hello world pascal example online for vms,
> so at least that much I can get working.
>
> however, all the docs online are not so useful for programming itself.
> my code has input and output from the terminal and from files.
> the hello program uses: program hello(output);
> so not sure how to do in and out from the terminal.
> tried googling examples but no such luck beyond hello world.
>
> it might be easier for me to port to vax basic, I used to be an expert at
> that, many moons ago.
>
> Dan.
> From: Simh <simh-boun...@trailing-edge.com
> <mailto:simh-boun...@trailing-edge.com>> on behalf of Jon Elson
> <el...@pico-systems.com <mailto:el...@pico-systems.com>>
> Sent: February 7, 2018 9:25 PM
> To: simh@trailing-edge.com <mailto:simh@trailing-edge.com>
> Subject: [Simh] anyone know how to convert/translate turbo pascal to vax
> pascal?
>
> On 02/07/2018 05:57 PM, simh-requ...@trailing-edge.com
> <mailto:simh-requ...@trailing-edge.com> wrote:
> > [Simh] anyone know how to convert/translate turbo pascal to
> > vax pascal?
> > Message-ID:
> >
> > <dm3pr16mb0813e13bb9f23f23569db71ac9...@dm3pr16mb0813.namprd16.prod.outlook.com
> >
> > <mailto:dm3pr16mb0813e13bb9f23f23569db71ac9...@dm3pr16mb0813.namprd16.prod.outlook.com>>
> >
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > since I did all that work recreating "castle" from the vax to the pc
> > using turbo pascal (then free pascal)
> > I'd like to "port" it back to the vax,
> > but the vms 7.3 pascal compiler doesn't recognize "writeln"
> > and I suspect things like types and records and case statements wont work
> > either.
> >
> > anyone have any ideas?
> Umm, I just looked back at some Pascal code I had on VAX
> Pascal, and it DEFINITELY has writeln statements in it.
> This is such basic Pascal syntax, I can't imagine that did
> not work. But, maybe you have to enable some library or
> Pascal "unit" to use those functions.
>
> Jon
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