If the current instruction in the application is a function call, you can either step into the function or step over the function.
To step one assembler instruction, stepping into a function:
Select Run > Instruction Step Into or click the Instruction Step Into button.
Use the stepi command.
A single processor instruction step is executed and the application advances one assembly instruction. If the next instruction is a function call, the debugger steps into the function.
The Assembler window opens if it is not open already.
To step one assembler instruction, stepping over a function:
Select Run > Instruction Step Over or click the Instruction Step Over button.
Use the nexti command.
The application advances until the next Assembler instruction. If the current assembly instruction is a jump or a call, the debugger steps over it.