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From: rokicki@rocky.STANFORD.EDU (Tomas Rokicki)
Newsgroups: comp.sys.amiga
Subject: Screens bug
Message-ID: <667@rocky.STANFORD.EDU>
Date: Wed, 14-Oct-87 03:30:18 EDT
Article-I.D.: rocky.667
Posted: Wed Oct 14 03:30:18 1987
Date-Received: Fri, 16-Oct-87 01:40:57 EDT
Organization: Stanford University Computer Science Department
Lines: 38

[ This is in reply to some article I can no longer find . . . ]

Someone mentioned a bug with the screens.  I have seen it quite
often, and found a reliable way to duplicate it.

To duplicate this bug, collect:

	A virgin copy of WB 1.2 (or any old bootable copy, actually)
	Fish disks 60 and 72

Boot the WB.  Go into preferences, turn interlace on, and select save.
Copy show/show from fish disk 60 onto the WB, probably to the c directory.
Copy HAM/sugar and HAM/cathy from 72 onto the WB (you'll probably have to
delete preferences and a lot of other stuff to do this.)  Now, reboot
off that floppy.

Wait until everything settles down, and you have a CLI window.  (If
necessary, open one.)  Type

	1> show cathy

As soon as the disk stops spinning, select `screen to back'.  Now, type

	1> show sugar

Again, wait for the disk to stop spinning.  Select `screen to back'; now
you see the workbench.  Select `screen to back' on the workbench, and
you see one of two things:

	a) the top half of cathy, in non-interlace mode, or
	b) pyrotechnics, but no crash.

At this point, selecting the `screen to back' will probably crash the
system.

I'm giving Dale a disk so constructed Thursday at BADGE; see y'all there!

-tom