Message-ID: <474@sequent.UUCP>
Date: Sat, 28-Apr-84 11:49:48 EDT
Article-I.D.: sequent.474
Posted: Sat Apr 28 11:49:48 1984
Date-Received: Wed, 2-May-84 04:29:09 EDT
References: <735@ihuxp.UUCP>
Organization: Sequent Computer Systems, Portland
Lines: 36

[color=blue]>  From: fcm@ihuxp.UUCP[/color]
[color=blue]>  Message-ID: <735@ihuxp.UUCP>[/color]
[color=blue]>  Date: Fri, 27-Apr-84 13:22:56 PST[/color]
[color=blue]>  [/color]
[color=blue]>  ...Imagine my surprise when I attempted to run the copied[/color]
[color=blue]>  disk and save the original when the operations of the flight took place[/color]
[color=blue]>  at 1/10th lthe speed of the original. It took 10 seconds to complete each[/color]
[color=blue]>  function that took 1 second on the original disk....[/color]

I've noticed that on my properly backed-up version of Solo Flight (for
the Atari... I dunno if yours is on the Atari as well) will about once
out of every fifteen times go into slow mode.  I have an 810, and the
backup could not be made using standard DOS disk copying (they use
redundant sectoring on this one... good thing I have hardware-assist
widgets to make my backups!).

I think that what they did is made the s/w on the disk with redundant
sectoring, and then put a hook into the program to go ahead and boot up
on a "copied" disk, but run the clock at a super slow rate.  Different
from the other protection schemes, which simply go bonkers on the
copies.

If you wanna make a backup of your Solo Flight disk, go find someone
who has a Happy Drive, an ATR8000, or the Chip (all are hardware
assists to do image bit-for-bit copies of disks).

Flames about the pirating possibilities with a bit-image copier can be
sent to /dev/null.  People have an honest need to make backups.  (Curse
"Electronic Arts" for using sector skewing on their latest releases...
even the Chip has a heckuva time with those!!)

Randal L. ("joy stick") Schwartz, esq. (merlyn@sequent.UUCP)
	(Official legendary sorcerer of the 1984 Summer Olympics)
Sequent Computer Systems, Inc. (503)626-5700 (sequent = 1/quosine)
UUCP: ...!XXX!sequent!merlyn where XXX is one of:
	cdi decwrl nsc ogcvax pur-ee rocks34 shell unisoft vax135 verdix