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There is a WTO macro documented in the z/VSE manuals.

But when I tried using WTO in my assembler code on DOS/VS
it said there was no such macro.

Does it exist, and if it does, is there something I need to do
to use it?

Or is there some other similar simple macro to display a
message somewhere?

Thanks. Paul.

On Fri, Sep 6, 2024 at 07:51 AM, John Imholte wrote:

That is a z/VSE only macro.

Thanks all for your replies.

Good news is that the pdld (linker) author (from Slovakia)
has agreed to support the VSE format of an unloaded
(using CSERV) executable (phase). He has already done
MVS and CMS but both are having issues still.

This allows you to build a DOS/VS executable (and MVS
and CMS) on Windows.

But I need to provide example input object code and
matching executable and would like to keep it simple
by just having one assembler program call another.

I already know how to do that, but without a WTO I
can't easily see it working.

I would settle for an example that sets a non-zero
return code to return to DOS/VS with, but I don't see
DOS/VS printing my return codes.

This is using VSE/380.

Is there a way to see the return codes from executing
a DOS/VS phase?

Thanks. Paul.

Leo Langevin's book DOS/VSE/SP Guide for Systems Programming contains a WTO and WTOR program along with many any other helpful programs that early DOS didn't have.

Regards,
Gary