HOW TO UNPROTECT "ARTWORK" by West End Film (version 2.43)

(1) First, make a copy of the original disk. NEVER, EVER, fool around
with your only working copy of a program!!!

(2) This will take repeated searches with a disk zapper such as Norton.
Search the file ARTWORK.EXE. Note that all bytes are in hexadecimal.

    A. Search for the byte string: A0 A2 19 30 E4. Change it to:
                                   B8 61 00 30 E4

->  This forces ARTWORK to see the letter "a" of its signature, even if
    no "a" is there...

    B. Search for the byte string: 80 FC 10 1F 58 75 03. Change to:
                                   80 FC 10 1F 58 90 90

->  This causes ARTWORK to believe that the expected diskette error has
    occurred, even if it hasn't.

    C. Search for the byte string: B4 3D CD 21 73 03. Change to:
                                   B8 02 00 90 90 90

->  This prevents a diskette check.


    D. Search for the byte string: 8B 46 0A E8 7C 00. Change to:
                                   8B 46 0A 90 90 90

->  This prevents one of the two accesses of the copy-protect tracks.

    E. Search for the byte string: 8B 46 0A E8 1A 00. Change to:
                                   8B 46 0A 90 90 90

->  This prevents the second access of the copy-protect tracks.


    F. Search for the byte string: 72 02 33 C0 C3. Change to:
                                   90 90 33 C0 C3

This completes the first part of the unprotect.  Using DEBUG.EXE, load
the ORIGINAL copy of ARTWORK.EXE. Put the original diskette in
A:.

    D. At the "dash" prompt, type: G 8bd:9AA <cr>
                                   G 9b1     <cr>
                                   G 8bd:9aa <cr>
                                   G 9b1     <cr>

-> This sequence has caused ARTWORK to read in a signature from the
   protected tracks of the original disk. Type: D DS:xxxx (where xxxx is
   the current contents of the BX register)

WRITE DOWN THE BYTE PATTERN DISPLAYED!

On my copy, the pattern is: 4B 61 78 78 00 00    (=Kaxx)

The "4B" is the signature of the graphics board which ARTWORK expects to
see. The "61" is the letter "a", which says "I am a valid ARTWORK". This
signature is for the Tecmar Graphics Master. If your copy was installed
for a different board, the bytes given above will differ from yours.

Remove the original disk from drive A:.

Now quit DEBUG and return to Norton or some other disk utility.

Search the modified copy of ARTWORK.EXE (NOT the original) for the byte
             string: A0 A1 19 30 E4  and change it to:
                     B0 xx 90 30 E4

The "xx" above stands for whatever the byte was in the signature string
you wrote down. For me, xx was "4B". ARTWORK is now unprotected. Have
fun, kids!

LET THERE BE SOFTWARE!