Started my PiDP8 project from the simH end, built up a Pi Zero and got it self-booting into simH 4.0 using directions found on the PiDP8 web site and the Google Group. What's nice about the Pi Zero is that one can get enough power right off the display to power USB keyboard and wireless dongles, to make it easier to download whatever files I want. I added a 2.54 mm 40-pin connector to attach to the soon-to-be-completed PiDP box. http://vintagecomputer.net/pictures/2016/PiDP8/ I started with the original Raspberry Pi, but quickly learned you can't use this model, it does not have a 40 pin connector. The RPi Zero does not come with a connector installed, you have to add it yourself but the advantage is that it is smaller and uses less power. I believe I will be able to run power and serial connection through the one port too. Bill