The Turbo Debugger is a program that allows you to single‑step your program (that means run it line‑by‑line while you watch what happens).  You can observe the registers, the memory dump, individual variables, flags, and the code as you trace through your program.  (You can use the Debugger with programs written in high level languages as well, observing both the source code and the assembly language code generated by the compilation of those programs.)

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