

If you don't enter DEATHMATCH as a command line parameter, DOOM II will default to the Cooperative mode. -DEATHMATCH starts DOOM II as a DeathMatch game.Instead of using the saved game name, enter the number that corresponds to the slot you saved the game to on the SAVE GAME screen (0-5). -LOADGAME allows you to start DOOM II from a specified save game.These parameters can be passed straight to DOOM II, or passed to IPXSETUP or SERSETUP, which then passes them to DOOM II. - sets the baud rate of your COM port, overriding the value in the MODEM.CFG if you're running a modem game.To use hexadecimal, such as the number 0x3f8, you would type "-port 0x3f8" -port. -PORT sets the COM I/O port that SERSETUP uses to communicate with your modem.Just in case your 16550 UART is acting up at the higher speed.


-8250 tells SERSETUP to set the UART to 8250.-COM1, -COM2, -COM3, -COM4 specifies what COM port your modem or serial cable is using.-ANSWER puts your modem into Answer mode so someone can call you and play DOOM2.-DIAL tells the program what number to dial, if you're going to do the calling.When you want to play a modem or null-modem game, you need to run SERSETUP.EXE, which is the device driver for DOOM2's serial communications mode.

By setting a different port, more than one group of players can play DOOM2 on a single network.
