DEBUG is used to assist in testing and debugging of executable files. The format of the DEBUG command is:
debug <filename> [parameters]
where <filename> is the file to test.
parameters are any command line parameters to be passed to the program being debugged, not to DEBUG itself.
DEBUG allows the user to examine memory and registers, assemble and disassemble programs, set breakpoints, and step through programs one instruction at a time.
Note: DEBUG supports 8086 and 8087 instructions only. It will not assemble or disassemble 80286/7 or later opcodes, and can only access the low 16 bits of 32 bit registers.