steve@grinch.umiacs.umd.edu (Steven D. Miller) (03/04/89)
To make a /dev/cgfour0, become root, go into /dev, and:
# MAKEDEV cgfour0
You might want to remove /dev/bwtwo0 while you're at it; I think Xsun
didn't do what was expected on a color 3/60 here if bwtwo0 existed.
That's all there is to it. When X11 comes up, you'll have a mono display
on one virtual screen, and a color one on the other. Move the mouse off
one side of the screen (I don't remember which, but I think it's the left)
to get to the color display.
The mono screen is {hostname,unix}:0.0, and the color one is 0.1. You'll
need to run window managers on both displays explicitly.
There are some fine points here that I don't understand -- I don't know
how to get Xsun to use only the mono frame buffer or only the color frame
buffer -- but that should be enough to get you started.
Warning: the X11 mono stuff isn't too bad on a 3/60, but the color stuff
is a dog. How much of that is hardware versus software is not clear to
me.
-Steve
Spoken: Steve Miller Domain: steve@mimsy.umd.edu UUCP: uunet!mimsy!steve
Phone: +1-301-454-1808 USPS: UMIACS, Univ. of Maryland, College Park, MD 20742trinkle@purdue.edu (03/09/89)
> That's all there is to it. When X11 comes up, you'll have a mono display > on one virtual screen, and a color one on the other. Move the mouse off > one side of the screen (I don't remember which, but I think it's the left) > to get to the color display. Either side will work, it is circular. > There are some fine points here that I don't understand -- I don't know > how to get Xsun to use only the mono frame buffer or only the color frame > buffer -- but that should be enough to get you started. If you wish to use only one screen, use the -dev option to Xsun. I use xinit xterm -C <xterm opts> -- X.cgfour -dev /dev/cgfour0 ; kbd_mode -a The X.cgfour is necessary on our machines because all of the Purdue+ speedups to not work correctly on a cgfour, so we have a separate binary for the cgfours. You can, of course, replace /dev/cgfour0 with /dev/bwtwo1 to use B&W only. I like the colors, so I put up with the slower performance. > Warning: the X11 mono stuff isn't too bad on a 3/60, but the color stuff > is a dog. How much of that is hardware versus software is not clear to > me. A lot of work was done by Gene Spafford and Sam Kimery for the Purdue speedups on B&W units because that is what they had at the time. Daniel Trinkle trinkle@cs.purdue.edu Dept. of Computer Sciences {backbone}!purdue!trinkle Purdue University 317-494-7844 West Lafayette, IN 47907