The Null-modem emulator can be used to provide serial interface for device emulators. The output to one port is the input from other Pairs and use any pair to connect one COM port based application to another.Įach COM port pair provides two COM ports.
The Null-modem emulator allows you to create an unlimited number of virtual COM port Windows, available freely under GPL license. The Null-modem emulator is an open source kernel-mode virtual serial port driver for
Null-modem emulator (com0com) - virtual serial port driver for Windows