Hi John. We are working on it. We initially made CQ100 to use the paddle plugged into serial port, and it was great up to 12 wpm. At high speed 30 to 40 wpm I could not control S or H because there was a slight delay in the monitor tone. We might have a solution now. We are doing some more experiments. Thanks for the pin-out information.
I hate using the keyboard so I plugged my keyer tone into the sound card Line-In plug. It works great but the tone is very raspy. I should have used my Kenwood transceiver sidetone instead of that raspy keyer.