How To Load An Activity In A fragment?

What are the potential problems with the following assembly language code fragment written to run on MARIE?

  • the subroutine assumes the parameter to be passed is in the AC and should double this value. the main part of the program includes a sample call to the subroutine. You can assume this fragment is part of a larger program. Main, Load X Jump Subl Sret, Store X ........ Subl, Add X Jump Sret

  • Answer:

    X can overflow.

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