I am attempting to add to the serial object under NT a routine that reads 

the serial port. I have values coming into tcl/tk; how to get them into the C code so I can send out the serial object? I know that there's a command called PD that is added to tcl/tk, however, I don't understand the syntax. This is my first experience with tcl/tk. Also, I noticed that the C code uses sys_gui to send messages/strings to tcl/tk, but I can't figure out how to send strings from tcl/tk to the C serial code. I need to read and write to a multiport serial card that has sonar sensors attached to each port. I also need to read and write to a laser disc player based on the sonar information. I'm setting up and installation in two weeks and this is the sticking point. I have the serial stuff working under Linux, however, there isn't a Linux driver for my multiport card. Therefore, I'm stuck using NT.

Thanks, Elliot Elliot Anderson

Lecturer, Electronic Media University of California, Santa Cruz (831) 459-2955 ewanders@cats.ucsc.edu www.sirus.com/~ewanders