[Coco] NitrOS9 L2 CoCo 3 question: Display settings/modifications

Robert Gault robert.gault at att.net
Tue Jun 14 15:46:07 EDT 2016

Robert Gault wrote:
> Rogelio Perea wrote:
>> On my Tandy stock OS9 L2 I patched the TERM to allow the CoCo 3 boot into
>> 80 columns white text on black background.
>> As much as I love the nuclear green on the computer I would like to set
>> NitrOS9 the same way: boot into a white text on black background (and
>> border) 80x24 screen... I know the display settings can be modified after
>> the boot process is done, leaving that as a last resort.
>> I have the patch file for my stock setup in a disk at home... got some
>> downtime at work with VCC on my laptop. Even if I had the patches with me I
>> doubt they would work on NitrOS9 with all the changes compared to the stock
>> Tandy release of OS9.
>> Any hints greatly appreciated.
>> -- RP
> Rogelio,
> The easiest way to change the colors on the screens is to use Xmode. If all you
> want to change is /term and don't care about the boot screen, after booting enter
> xmode /term
> You will see the values for fgc, bgc, and bdc. You will want to change those.
> For a 24 line screen, you will also want to check pag.
> The values I have for a white screen with black letters 80x24 are:
> pag=$18
> fgc=2
> bgc=0
> bdc=0
> xmode /term pag=18 fgc=2 bgc=0 bdc=0
> Now you want to make those changes permanent so ex.
> cobbler /D0
> If you have a hard drive, cobbler may not work for you so you can edit OS9Boot
> with ded to make changes to OS9Boot.
> Robert


I forgot a parameter. :(

You also need to include with the xmode command    sty=2
which indicates an 80x24 text window.


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