-w command in debug

[xlav]

Used debug in windows 2kpro to assemble a code to add two numbers. Determined the code length with 'h' command. Then used -w command to write the code to disk. This command is always adding a 1 before the code length. eg if code length is 0009 and enter 0009 in cx register, then -w command gives-> Writing 10009 bytes. Doing a -l (load) command gives a message saying Insufficient memory. Why is a 1 being added by -w before the code length?