Since a very long time, I use the DCUTerm program V1.0011 (currently available for download) and I face a problem with the RS-232.
If I run hyperterminal on COM1 for example and quit the program, then I run DCUTerm, and when I connect the port I receive the following error:
"Fatal error while reading comport data. Error: %d"
Then I am stuck and the only way to be able to use DCUTerm is by rebooting my computer. Even a reboot is not enough, I need to stop and restart the computer with power off in between. It seems that it screws up the UART chip on the computer.
I have seen the same problem on another computer so it seems to be happening in all of these situations where we use hyperterminal and DCUterm switching from one program to another.
Can you please test this and confirm this problem on your side?