[Oberon] Which file saves video configuration value in NO

[peter at easthope.ca]

> Which file in Oberon saves video configuration detail?

This is my understanding.  Hopefully my errors are 
corrected by someone more knowledgeable.

Video configuration occurs before a file system is 
available.  The System.Log reports mounting of volumes.  
This would not be possible without a working display. 
Note that this arrangement is different from Linux 
where X is started after the system is operational.

The usual means of adjusting the display configuration 
of an installed system is by config strings and the boot 
loader has a capability to allow this.  A google of 
"site:ethoberon.ethz.ch video" will give a page with 
title "Display support".  Config strings are near the 
bottom.

When N.O. runs directly on a PC the config strings are 
found quite easily.  When N.O. runs under an emulator 
they can be a little more difficult to find.  With QEMU 
I had to set the Scroll Lock or press the Shift key at 
the right point.  For vbox you might hunt with google 
for instructions about interaction during boot loading.

A good description of the boot process is pertinent to 
this topic also.  

Regards,                ... Lyall E.

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