Unprotect for Silpheed (IBM PC)


 BE SURE TO BACKUP YOUR SILPHEED DISK BEFORE STARTING AND USE THE
 BACK UP FOR THE UNPROTECT.
 Modify only the backup copy!!!

 First you should rename the file or files
 SIERRA.EXE TO SIERRA


 Ex. C>rename sierra.exe sierra

 Next Load program into debug...

 Ex. C>debug sierra

 Then Follow the sample debug session:

     -s 0000 ffff 74 05 e8 86     :   Search of protection pattern

     XXXX:YYYY                    :   The search will return one addresses.
                                      If more or less than one are returned
                                      this unprotect may not work.

     -e YYYY eb 18                :   Edit the contents of the computed
                                      address

 Now write the new sierra game back to the disk:

     -w  <Enter>

     Writing XXXX bytes

 Then Quit Debug:

     -q  <Enter>

 Now it is time to rename sierra back to sierra.exe

     C>ren sierra sierra.exe

 Now try to run the new (Hopefully) unprotected version of Silpheed
 just push CR when asked to identify the ship.

     C>sierra

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 Unprotect Brought to you courtesy of Super Dave

                        Super Dave can be reached at:

                        The Download Depot BBS
                        (803) 269-7899
                        Greenville, SC