I was recently trying to reverse a level file format of an old game in IDA, and require some more information retrieved at run time.

I'm new to the DOSBox debugger, and confused of it a little since it doesn't look like I can control / use it in any way.

As soon as I run the game executable, the debugger infinitely spams out the following two messages:

• CPU:Illegal Unhandled Interrupt Called 1
• CPU:DOS rerouted Interrupt Called 1

Looking up the interrupt 1 here http://www.delorie.com/djgpp/doc/rbinter/ix/01.html it means it's a debugger single step break. But it continues to flood the debugger view, and the debugger doesn't even halt! So I don't quite understand why it's:

1. Unhandled
2. A single step interrupt not halting
3. Not possible to tell the debugger to just execute with F5

What am I doing wrong?