[Info-vax] CRTL and RMS vs SSIO

[Simon Clubley]

On 2021-10-23, Lawrence D?Oliveiro <lawrencedo99 at gmail.com> wrote:
> On Tuesday, October 19, 2021 at 12:38:09 AM UTC+13, chris wrote:
>> I would stop digging if I were you :-). 
>
> Says the one still in the hole over the pfSense/systemd issue.
>
> If you want to contribute something useful to this discussion, go have a look at the site and see if you can answer some basic questions about how their VMS emulation really works.
>
> For example, how do they emulate terminal driver behaviour? Say, something basic like being able to hit CTRL/Y to suspend a user-mode program, then type CONTINUE to resume it? How do they emulate that under Linux?
>

If they don't support it (and I don't know if they do) why would they
need to ? A typical customer might simply not care about that if
they can get the rest of their application running on Linux.

The remaining terminal driver stuff that doesn't need DCL interaction
can be emulated within the porting libraries the customer links their
application against.

There are also ways to emulate the sys$cli() functions as Stephen pointed
out recently.

BTW, many applications run inside a menu system for as long as the user
is logged in and the user never sees the DCL prompt.

> (I have some ideas on how to do that. I?d get into those, but I get the feeling people here don?t really want to discuss such things.)

Perhaps it's because this isn't a real issue that most end-user
customers are likely to need to support on Linux.

Do you have any business knowledge Lawrence ?

Simon.

-- 
Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP
Walking destinations on a map are further away than they appear.