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From: braver@ernie.Berkeley.EDU (Michael Braverman)
Newsgroups: comp.sys.att
Subject: COM2 and Graphics with 6300+ running Unix
Message-ID: <19878@ucbvax.BERKELEY.EDU>
Date: Mon, 27-Jul-87 16:46:09 EDT
Article-I.D.: ucbvax.19878
Posted: Mon Jul 27 16:46:09 1987
Date-Received: Tue, 28-Jul-87 06:47:46 EDT
Sender: usenet@ucbvax.BERKELEY.EDU
Reply-To: braver@ernie.Berkeley.EDU.UUCP (Michael Braverman)
Distribution: na
Organization: University of California, Berkeley
Lines: 31


I have two questions.

Question 1:
	
  I have an internal modem hooked up to the COM2 port of my 6300+.
As has been pointed out earlier in this newsgroup, Unix does not
come with a device driver for this port.  I called the AT&T Hotline
and was told that I could find everything I needed to write such
a driver in a manual called the "Integrated Software Reference
Manual."  Has anyone ever seen this manual? Does it really contain
everything I need, both to write the driver and to reconfigure the
unix boot file?   Better yet, has anyone figured out how to
access COM2 some other way? I'd like to connect the internal modem
to my UUCP utilities.

Question 2:

  I have the standard video board with a monochrome monitor and
I'd like to access the screen bitmap from C programs so I can 
write a graphics package.  The Hotline people suggested that I
use curses.  Somehow, I don't think that will work.  Is there some
relatively safe way to do this short of opening /dev/mem and
twiddling the bits therein.  If that is the only way, does anyone
know the memory address for the start of the bitmap and the format
it is in?

	Thank you,

	Michael Braverman
	braver@ernie.berkeley.edu