[serial] # Example: Redirect COM1 to real host COM port serial1=directserial realport:COM1 serial2=socket server:192.168.1.100 port:23 Or to a virtual null-modem pair (two DOSBox instances) serial3=nullmodem
serial1 directserial realport:COM1 Inside DOSBox, use a terminal program (e.g., TELIX , KERMIT , or MODE command): #2 emu os com
, you can also change at runtime: