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From: brnstnd@kramden.acf.nyu.edu (Dan Bernstein)
Newsgroups: rec.games.programmer,comp.os.msdos.programmer
Subject: Re: A big map with scrolling.  How???
Message-ID: <22959:Sep1121:23:5590@kramden.acf.nyu.edu>
Date: 11 Sep 90 21:23:55 GMT
References: <25223@megaron.cs.arizona.edu>
Organization: IR
Lines: 19

In article <25223@megaron.cs.arizona.edu> gudeman@cs.arizona.edu (David Gudeman) writes:
> In article <20299:Sep1114:53:0290@kramden.acf.nyu.edu> brnstnd@kramden.acf.nyu.edu (Dan Bernstein) writes:
> ]... I don't remember the exact dimensions of
> ]the maze, but it was somewhat wider than the screen and much longer.
> I suspect that you are dis-remembering the dimensions and the actual
> width was the same as the screen width.  I don't know of any way to
> use this technique with a map width different from the screen width.
> But if you do, please describe it.

I'm quite sure it was wider than the screen (the game would have been
really silly otherwise). The CGA let you set the virtual text screen
width to practically any number. I think small values messed up the
horizontal retrace, but large values were fine.

I'll go find the code if you'd like. (What, don't you have a Technical
Reference from DOS 1.00? Ya know, back in the days when the manual had a
full BIOS listing? [grin])

---Dan