[Coco] NitrOS-9 screen

[Bill]

I'm trying to set my Nitros-9 screen so I can read it. The ONLY way I can
see the Coco screen is if I use a VGA Grabber and use my laptop monitor. But
it's fuzzy in 80 column mode and black on green. I'd like to change to 51
columns, black on white, but I cannot figure out the display command to get
it there. Maybe if I can get it that way, I can DED the OS9Boot to make it
permanent.

Can anyone shed some light on this for me?

Thanks