I will open up the TTIG over the weekend, connect the serial port to my programmer, and see what it outputs. I just won’t have time to do it before then.
Please don’t connect it to your programmer - a serial to USB is the only thing that will work - there are no facilities to flash the device on the board.
As for timescales, I’m easy, I’m always here.
Sorry, I meant that my programmer has an integrated TTL port, so I can use it as a USB-to-serial adapter. I’ll just connect it to read the output, not to flash anything.