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-
- I have just seen a new copy of Lotus 1-2-3 v1a that has a
- modified protection scheme for which the currently published
- unprotect scheme will not work. Here is a modified unprotect
- that will work properly with both the old and new v1a releases
- ......
- 1) Rename 123.exe to 123.xyx
- 2) Type (to DOS) the command
- C> debug 123.xyx
- 3) Type (to debug) the command
- -s 100 efff cd 13 (The "-" is a prompt from debug.)
- 4) Debug should respond with something like:
- xxxx:ABA9 where xxxx is a hex number that may vary
- 5) Type
- -e aba9 fb f9 (Use whatever debug gave you in the
- -w last step instead of "aba9" if it is
- -q different.)
-
- 6) Rename 123.xyx to 123.exe
- For those of you who want to understand this, it is
- replacing an "INT 13" instruction that checks the disk
- in drive A: for some funny stuff with STI, STC instructions
- that set the flags to the values that the newer 123's check
- for later to defeat the old patch that only put NOP's there.
- END OF TRANSFER - PRESS ENTER TO RETURN TO MENU
-
- check
- for later to defeat the old patch that only put NOP's there.
- END OF TRANSF