Unprotect ThinkTank Version 1.001 1. Diskcopy the original disk to another floppy or copy the files to a hard disk. 2. Rename TANK.EXE, type RENAME TANK.EXE TANK.XXX 3. Rename INSTALL.EXE, type RENAME INSTALL.EXE INSTALL.XXX 4. Type DEBUG TANK.XXX and press ENTER 5. At the - prompt, type R . Look for the value in the DS register (left-hand column of the second line of the R display). 6. Add 1000 to that DS value. i.e. if the R display showed DS=0D5F then you will use 1D5F. I will refer to this value later as xxxx. Add 2000 to the original DS value (i.e.if DS=0D5F, it is now 2D5F). I will refer to this later as yyyy. 7. Check that your version is the same. Type the following: U xxxx:91F9 and press ENTER You should see JZ 91FE on the first line of the display. If so, this patch should work. 8. Type E yyyy:319 90 90 Enter 9. Type E yyyy:31C B8 00 00 90 Enter 10. Type E xxxx:91F9 EB 03 Enter 11. Type E xxxx:9212 EB 03 Enter 12. To save these changes, now type W 13. Type Q to exit DEBUG. 14. Rename TANK back to it's original name RENAME TANK.XXX TANK.EXE 15. At DOS, type DEBUG INSTALL.XXX 16. Check the version to make sure this will work. Type U 2D01 and press Enter. You should see JZ 2D06 on the first line. 17. If ok, then type E 2D01 EB 03 Enter 18. Type E 2D1A EB 03 Enter 19. Type E 50D9 90 90 Enter 20. Type E 50DC B8 00 00 90 Enter 21. To save the changes, type W 22. To quit DEBUG, type Q 23. Rename INSTALL back to original name RENAME INSTALL.XXX INSTALL.EXE That's it. The original floppy is no longer needed. you may copy the TANK files to a hard disk, network or other floppy with normal DOS commands. 07/18/84 other floppy with normal DOS commands. 07/18/84