Byte Position (00), NB=NUmber of bytes (20) <257 - 237 = 20>. Hit
             RETURN to lock in.

          K) Save the new parm to the work disk < SAVE "TEST",8 >

       7) Run the parameter on the backup again. You'll find it works
          fine. This title although not file copyable is completely
          void of copy protection. Note: if you are confused as to how
          the parameter should look after you're done, list out
          the Breakthrough parm from the Utility disk and list it out.
          It may become a little clearer to you.



        INTRO : PROTECTION SCREME TYPE F

        This protection scheme although tough to copy, can usually be
        reproduced by a few of the modern nybblers such as The Shotgun.
        Because the protection is on one of the outer tracks (36-40), you
        must copy out to track 40. This scheme was developed in England
        and is seen on many of the Firebird releases. A few other
        publishers have used this scheme but those also had obvious English
        origins.

        Characteristics of this scheme are references to GMA in the
        loader code or in the directory. Shortly after booting a non
        working copy, you can hear the head swing out and then the drive
        will lock up. Opening the drive door produces no flicker of the
        working drive light. Many times after a load failure, you will
        have to initialize your drive.

        In short, this protection is executed at the beginning of the
        boot up process. It is generally accessed by a JSR to code that
        checks special code placed on an outer track, usually track 38. A
        numeric value is returned back only if the protection is in place.
        If a non working copy is being booted, the drive head will swing
        out and lock up. Some of these schemes use the numeric value
        brought back and some do not. We will examine three types. In all
        cases we will show you how to fool the code into not even doing
        the protection check. Also we will show you how to repair the often
        times corrupted directories.

        Before working on these titles, please make a Fast Copy, and
        repair the directory. (See the general instructions below.) A disk
        log would also be helpful.

        Using Disk Doctor and the map below, you should be able to
        repair most any directory. Let's begin with Track 18 sector 1. The
        first two bytes represent the link bytes. They will either point
        to the next track and sector or will indicate that this sector is
        the


            K.J. REVEALED TRILOGY    PAGE [64]     (C)1990 K.J.P.B.