MS-DOS and Windows command line debug command
The debug command is used to look at portions of your computer and write assembly code to perform certain tasks on your computer.
Debug is an external command and is available for the following Microsoft operating systems. MS-DOS 2.x - 4.x use debug.com as the external file. MS-DOS 5.x and later and all versions of Windows that support this command above uses debug.exe as the external file.
DEBUG [[drive:][path]filename [testfile-parameters]]
|[drive:][path]filename||Specifies the file you want to test.|
|testfile-parameters||Specifies command line information required by the file you want to test.|
After debug starts, type "?" to display a list of debugging commands.
debug <press Enter>
-D40:00 <TypeD40:00, and press Enter>
Information about your computer ports is displayed.
-Q <Type Q, and press enter>