How to debug the application?

There is a test application written in C++ Builder (version 6 I guess).
It asks to enter data in the field and verifies their internal calculations. How can I find out what it expects?
Which debugger can take, so that was simple enough, and you can see what happens in the code (even ASM), after pressing the button on the form?
July 8th 19 at 11:33
1 answer
July 8th 19 at 11:35
In the case of C++ Builder om only disassembler and help, there ollyDbg or IDA or SoftICE. Your taste in General.
For sure there are quality delphi Decompiler software, but glabellar anything similar did not create one.

Yes, actually the code does not look'll see only Assembly code, somehow derived from the engine. In this respect only IDA HEX-Rays succeeds (there is generation C++ source of the engine).

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