Using the Debug Program

DOS comes with a program named DEBUG that is used for testing and debugging executable programs. It displays all program code and data in hex format.

Commands

• A - Assemble symbolic instructions into machine code
• D - Display the contents of an area of memory
• E - Enter data into memory, beginning at a specific location
• G - Run the executable program in memory
• N - Name a program
• P - Proceed, or execute a set of related instructions
• Q - Quit the debug session
• R - Display the contents of one or more registers
• T - Trace the execution of one instruction
• U - Unassemble machine code into symbolic code
• W - Write a program into disk