Path: utzoo!attcan!uunet!jarthur!brutus.cs.uiuc.edu!rpi!zaphod.mps.ohio-state.edu!swrinde!ucsd!ucbvax!CCIW.BITNET!U009
From: U009@CCIW.BITNET
Newsgroups: comp.sys.atari.st
Subject: Lynx Easter Egg (Lynx does Mandelbrot and Julia Explorations)
Message-ID: <5A04060A29370275-MTACY830*U009@CCIW>
Date: 6 Apr 90 15:55:56 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 24

As revealed recently on GEnie, the Lynx game "Chip's Challenge" has a
secret mode. If the password "MAND" is entered, the game changes into
a Mandelbrot and Julia set explorer. While the performance is poor by
mainframe standards, the opening screen giving the largest representation
of the whole region takes about 5 minutes to compute. The joypad posi
positions a 1/4 screen rectangle for zooming in and out by powers of 2.
There is a screen available with the middle option button giving the
current coordinates and zoom factor. The zoom factor seems to have
40 bits of significance, but all the parameters are given in hex inxx
the form XX.XXXXXXXXXXXXX to 48 bits.
Arround the boundaries of the zone at high magnifications, the compute
speed is quite acceptable for a kid (like me!). The Option 2 button
will cycle the color look up table CW or CCW for a neat animation.
(Computing ceases while the animation is on.)
I regret that I deleted the original message without noting the name
of the person who found this and therefore can't thank them publicly
here. (It might have been the programmer who wrote it too.)


 Regards, Stu Beal, VE3MWM, (U009@CCIW.BITNET),
 National Water Research Institute,
 Burlington, Ontario, Canada.

 The future lies ahead. And behind us lies, lies... lies.