Send a Message to All Terminals
DOS pseudo functions: Send a Message to All Terminals
DOSRW(AX-value, number-of-bytes, format-statement-label) EXCP=statement-label
AX-value = "@FFFE@" . number-of-bytes = number of characters to be written to another terminal
format-statement-label = format statement containing the message to be written to the other terminal (may be a constant or variable) .
If the write function is successful, the message contained in the format statement will be sent to the terminal specified.
If an exception occurs, byte 2 of the AX field will contain the DOS error code (in hex).
This pseudo function sends a message to the write control line of all Comet workstations, including all workstations attached to a Comet Terminal Adapter and all workstations running Comet on a network.
Also see Send a Message to Another Terminal