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Unprotect MultiLink 2.06. by Independent (IND)

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  MLINK206.UNP

  The following is a method to unprotect MultiLink Ver 2.06 to allow
  booting directly from hard disk without the need to insert the
  MultiLink distribution disk.

   ENTER                         COMMENTS
-------------------------    ---------------------------------------
C>copy mlink.com mlink.bak   Make a backup first!
C>debug mlink.com            Start debug session.
-u 2dfa                      Unassemble from address 2DFA.
                             You should see:

                             xxxx:2DFA       CALL     2F01
                             xxxx:2DFD       JNB      2E10
                             xxxx:2DFF       MOV      CX,2908
                             xxxx:2E02       CALL     2F01
                             xxxx:2E05       JNB      2E10
                             xxxx:2E07       DEC      BYTE PTR [2E0F]
                             xxxx:2E0B       JG       2DF2
                             xxxx:2E0D       JMP      07C4
                             xxxx:2E10       XOR      BYTE PTR [2E0D],32
                             xxxx:2E15       MOV      AX,[23C4]
                             xxxx:2E18       CMP      [2705],AX

                             If you don't see this, you have another
                             version.  If so, enter 'q' to quit the
                             debug session.  Otherwise, continue.
                             The instructions at
                             xxxx:2dfa, xxxx:2e02, and xxxx:2e1c
                             need to be replaced.

-e 2dfa f8 90 90             CALL  2F01  is replaced by CLC, NOP, NOP
-e 2e02 f8 90 90             CALL  2F01  is replaced by CLC, NOP, NOP
-e 2e1c 90 90                JNZ   2E0D  is replaced by NOP, NOP
-w                           Save the changes to disk
-q                           End the debug session.


*End of MLINK206.UNP*

→→6.UNP*