Texas Instruments 3000 - Manual (Page 81)

External Communications, Page 3
DSR (Data Set Ready)
The RS-232C data set ready (DSR) signal can be forced on for application programs
requiring this signal. Possible settings are Normal and Force On The default setting is
Normal.
DCD (Data Carrier Detect)
The RS-232C data carrier detect (DCD) signal can be forced on for application programs
requiring this signal. Possible settings are Normal and Force On. The default setting is
Normal.
Option Comm
The Option Comm(unication) category defines the communications settings for a second
serial port if your computer is equipped with the optional Internal Modem.
Possible settings for the Option Comm item are Port 2 and Disable. The default setting is
Disable. The Disable setting conserves battery power. You must select the Disable
setting if the Internal Modem option is not installed in your computer.
Set the other communication items (Baud Rate, Data Bits ... ) to meet the requirements of
your communication application program and/or the host that will be connected to your
computer.
4-20 Customizing Your Computer