To enable or disable trapping of communications activity to the specified communications adapter.
COM(n) ON COM(n) OFF COM(n) STOP
n is the number of the communications adapter 1 or 2.
Execute a COM(n) ON statement before ON COM(n) statement to allow trapping. After COM(n) ON, if a nonzero number is specified in the ON COM(n) statement, BASIC checks every new statement to see if any characters have come in the communication adapter.
With COM(n) OFF, no trapping takes place, and all communications activity will be lost.
With COM(n) STOP, no trapping takes place. However, any communication that takes place will be remembered so that immediate trapping will occur when COM(n) ON is executed.