port=1,,38400 help=0 This is an option file for tt.exe. The options must be listed from the first line in this file and the options are terminated by end of file or a blanked line. This file is searched in order of current dir, system dir and pathed dir. If found, it is imported prior to command line options so that options specified in this file will be overridden by command line options. port=<port>,<format>,<bps> Specifies port number (1 to 99), data format (n|o|e)(7|8)(1|2) and bit rate. The default setting is: port=1,n81,9600 Example: port=10 (Set port number. Format and bit rate are left unchanged) port=5,,115200 (Set port number and bit rate. Format is left unchanged) bps=<bps> Same as port=,,<bps> flow=<flag> Specifies if RS/CS flow control is enabled (1) or disabled (0). The default setting is: flow=0 pol=<flags> Specifies to invert polarity of ER, RS and TD signals. The value can be 0 to 7 (b0:ER, b1:RS, b2:TD). When RS signal is inverted, RS/CS flow control is disabled regardless of flow option. The default setting is: pol=0 help=<flag> Shows keyborad command list on start up. The default setting is: help=1