Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!ll-xn!mit-eddie!uw-beaver!ssc-vax!bcsaic!paula
From: paula@bcsaic.UUCP (Paul Allen)
Newsgroups: comp.sys.zenith.z100
Subject: Re: Interlace mode
Message-ID: <4715@bcsaic.UUCP>
Date: 5 Apr 88 04:26:24 GMT
References: <8803300309.AA06922@ucbvax.berkeley.edu>
Reply-To: paula@bcsaic.UUCP (Paul Allen)
Organization: Boeing Computer Services AI Center, Seattle
Lines: 29

In article <8803300309.AA06922@ucbvax.berkeley.edu> USERABFY@CLVM.CLARKSON.EDU (Roger Gonzalez) writes:
>Could someone please explain or refer me to articles in Sextant or
>elsewhere about how to use interlace mode on a '100?
>                                           -rg-

I wrote a set of graphics primitives for my Z100 a long time ago.  By
banging my head on the Technical Manual, I figured out how to put the
screen in interlace mode and and get it back into normal mode without
totally hosing it.  :-)  The basic routines for changing screen modes
and plotting points have been stable for quite a long time.  Over the
last few years I've added things like circles, b-splines, Hershey font 
support, and a device-independent upper layer coupled with device-dependent
driver layers for the screen and my C. Itoh ProWriter.  The whole mess
has evolved over four different compiler versions from three different
vendors.  (Lattice C 1.0 -> Lattice C 2.1 -> MSC 4.0 -> Turbo C 1.0)  I 
would try to explain how to put the screen in interlace mode, but the code 
is at home and I'm not sure I can remember all the nitty gritty details.  
So I'll offer the next best thing.  If you don't get a better response 
from somebody else, send mail and I'll bring my graphics code in from home 
and mail it to you.

Paul Allen
paula@boeing.com
...!uw-beaver!ssc-vax!bcsaic!paula


-- 
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Paul L. Allen                       | paula@boeing.com
Boeing Advanced Technology Center   | ...!uw-beaver!ssc-vax!bcsaic!paula