* Grant Searle, who wrote the original formatting program and read / write driver code as well as the DPB for his 9 chip CP/M computer. XDRIVER is a derivative of this work. http://searle.hostei.com/grant/index.html
* John Elliot, who helped me to understand how the FID file format works, and provided his FID CHECKSUM program which is a required part of the FID development toolchain. http://www.seasip.info
* CPCWiki member Bryce, who provided a good deal of hardware advice and encouragement.
* The open source community team responsible for KiCad, which, in its later incarnations, is worth every penny you do not have to spend on it. http://kicad-pcb.org/