Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!n8emr!uncle!jbm
From: jbm@uncle.UUCP (John B. Milton)
Newsgroups: comp.sys.att
Subject: Re: UNIX PC Graphics Questions
Message-ID: <267@uncle.UUCP>
Date: 15 May 88 03:53:07 GMT
References: <2271@inco.UUCP>
Reply-To: jbm@uncle.UUCP (John B. Milton)
Organization: Just me and my computer, Columbus Ohio
Lines: 18

In article <2271@inco.UUCP> todd@inco.UUCP (Todd O'Connell) writes:
...
>2) Is there any way to directly access screen memory?  I would like to
>   bring up a segmented graphics package on my 7300 but find it a little
>   abhorrent to do pixrect ops to display a single pixel in a vector draw
>   routine.  I would use the graphics driver except that I also want to
>   do some raster work and I don't want to waste 16 bits/pixel for a b/w
>   display.

The UNIXpc screen memory is located at $420000, and the only way to access
that area of memory would be through a loadable driver. This kind of access
would screw up the window manager's view of things.

John

-- 
John Bly Milton IV, jbm@uncle.UUCP, {ihnp4|osu-cis}!n8emr!uncle!jbm
home: (614) 294-4823, work: (614) 459-7641; talk to me about fractals