A SIMH Attach question.

From: Jerome H. Fine <jhfinexgs2_at_compsys.to>
Date: Wed Dec 3 19:20:10 2003

>Mike Gemeny wrote:

> Greetings all,
> Is there a way to change device attachments without stopping the simulation?
> This would be quite helpful in a time sharing environment for handling
> virtual printouts, virtual paper tapes, and virtual magnetic tapes.

Jerome Fine replies:

I don't think that John Wilson monitors this list, so
I though that the following information might be
helpful!

Just in case anyone who needs this feature is running
under an operating system that supports Ersatz-11,
the feature (being able to "ATTACH" devices in
mid stream - except under Ersatz-11 the command
is "MOUNT") is available.

To use it, the user types <SHIFT/ENTER> on the
keyboard. I presume that the usual cautions are
just as likely to be ignored under Ersatz-11, but
I suggest that a user would want to "DETACH"
very carefully.

In addition, someone else asked about making
changes to how keys are used. Ersatz-11 has
a VERY powerful set of commands that allow
the user to define how every key is used. In my
case, I use the "Caps Lock" key as the "LCtrl"
key since that is the normal location on a VT100
keyboard (actually beside the "Caps Lock" key).
Also, the VT100 has a "No Scroll" key
beside the "LShift" on the keyboard. On the
standard 104 key PC keyboard, I define the
action of the "LCtrl" key to be equivalent to
the action of the "No Scroll" key on the VT100
keyboard.

Finally, I also found that I strongly NEED the
6 EDIT keys found on the VT220 keyboard
when I run RT-11 under Ersatz-11 on a PC.
Ersatz-11 allows me to define the 6 EDIT keys
above the 4 ARROW keys such that RT-11
thinks that a VT220 LK201 keyboard is being
used when the appropriate EDIT key is pressed.

Sincerely yours,

Jerome Fine
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Received on Wed Dec 03 2003 - 19:20:10 GMT

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