key to jump to the beginning of the 1985 file. When the
         sector comes on the screen, examine the first four bytes. The
         first two are links to the next sector of the file. The next
         two are the address bytes in reverse order ($0700). We know
         our changes are in memory block $0B00 so we can use the N key
         to page through memory. Press N to go to approximately 0800,
         press again to go to 0900, press again to go to 0A00, and
         once more to $0B00. This block turned out to be track 17,
         sector 3 on our version. Yours could be in a different
         location on the disk but the idea will be the same.

         E) Using the cursor key to move through the code, we
         find the original three bytes 29 7A 91 at location 83. The
         change to 4E F5 70 can be accomplished with the @ key. The
         changes must be the decimal equivalent. These are 78 245 112.
         Change each byte by placing the cursor over the byte to be
         changed, and type @ and then the decimal number change. Hit
         RETURN when the change is made to lock it in. When all three
         bytes are changed, continue searching with the cursor for the
         A2 byte. This can be found at 113. Using the same change
         procedure, change it to a decimal 91 ($5B). When all changes
         have been made and locked in, press C to copy the sector back
         to the disk.

         You now have a copy that can be fast copied. The placement of
         data on the disk in methods other than directory files will not
         allow you to file copy. One other point of interest is the fast
         loader installed in many pieces of this publisher's software. This
         fast loader is NOT compatible with the 1571 disk drive. In many
         (but not all) of the programs, you may disable the fast loader and
         allow the program to load on the 1571 by changing the jump to the
         main program in the autoboot. Countdown does not work by doing
         this but, just as an example, you would change the 79 0B (JMP 0B79)
         to CF 0B (use DISK Doctor and the decimal equivalents). This would
         bypass the fast-loader and the logo screen. A small price to pay
         for the 1571 owners.



         WEB DIMENSION : ACTIVISION

         Procedure:

         Loading the original produces a rattle free load, and an error
         scanner shows no standard errors. A backup made with the C-64 Fast
         Copier produces a non-working copy. A backup made with a nybbler
         produces the same non-working copy. Before starting to work on
         this program, please make a (non-working) backup of the original,
         and a disk log to log the file addresses.


            K.J. REVEALED TRILOGY    PAGE [24]     (C)1990 K.J.P.B.