Ok for programming electronics I got myself an ftdi chip. I want to be able to invert the TX/RX/... signals so I can get some experiments working that I have on a paper. There is a good overview what the bytes in the EEPROM mean. I can read its EEPROM by working through this tutorial.
To reprogram the EEPROM of the ftdi,
- download the software
- unpack it
tar xvzf ftdi_eeprom-0.3.tar.gz cd ftdi_eeprom-0.3
- build it
./configure && make -j4 && make install