Debugging step-by-step

The purpose of this tutorial is to demonstrate the iterative process of creating a bug-free program.

In this example, we want to count the occurances of a single character in a string.

• buggy1.asm - Contains syntax errors.
• buggy2.asm - Never stops.
• buggy3.asm - Always returns zero matches.
• buggy4.asm - Doesn't work quite as expected.
• buggy5.asm - Works.