A tiny repository for the project described at https://nextstatefail.wordpress.com/2018/11/25/jtag/
Huge thanks for the inspiration and guidance found at http://idlelogiclabs.com/2012/04/15/talking-to-the-de0-nano-using-the-virtual-jtag-interface/ and another source which I currently cannot locate! I shall update the attribution as soon as I find it.