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Text File  |  1984-06-29  |  2KB  |  48 lines
  1.   MLINK207.UNP
  2.  
  3.   The following is a method to unprotect MultiLink Ver 2.07 to allow
  4.   booting directly from another disk without the need to insert the
  5.   MultiLink distribution disk.
  6.  
  7.    ENTER                         COMMENTS
  8. -------------------------    ---------------------------------------
  9. C>copy mlink.com mlink.bak   Make a backup first!
  10. C>debug mlink.com            Start debug session.
  11. -u 33EC                      Unassemble from address 33EC.
  12.                              You should see:
  13.  
  14.                              xxxx:33EC       CALL     34DF
  15.                              xxxx:33EF       JNB      340D
  16.                              xxxx:33F1       MOV      CX,2908
  17.                              xxxx:33F4       CALL     34DF
  18.                              xxxx:33F7       JNB      340D
  19.                              xxxx:33F9       DEC      BYTE PTR [2544]
  20.                              xxxx:33FD       JG       33E9
  21.                              xxxx:33FF       INC      BYTE PTR [2543]
  22.                              xxxx:3403       CMP      BYTE PTR [2543],01
  23.                              xxxx:3408       JBE      33E9
  24.                              xxxx:340A       JMP      07C4
  25.                              If you don't see this, you have another
  26.                              version.  If so, enter 'q' to quit the
  27.                              debug session.  Otherwise, continue.
  28.                              The instructions at
  29.                              xxxx:33EC, xxxx:33F4, and xxxx:3414
  30.                              xxxx:34B8, xxxx:34BC, and xxxx34BE
  31.                              xxxx:34C0, xxxx:34C1
  32.                              need to be replaced.
  33.  
  34. -e 33EC F8 90 90             
  35. -e 33F4 F8 90 90             
  36. -e 3414 90 90                
  37. -e 34B8 90 90 90 90 
  38. -e 34BC 90 90
  39. -e 34BE 90 90
  40. -e 34CO 90
  41. -e 34C1 90 90
  42. -w                           Save the changes to disk
  43. -q                           End the debug session.
  44.  
  45.  
  46. *End of MLINK207.UNP*
  47.  
  48.