Concepts of ESDI From FreeBSD Handbook. Addresses; physical connections, device addressing and termination. http://www.infran.ru/TechInfo/BSD/handbook120.html

HwB: ESDI Cable by Joakim Ögren Pinout and description for building an ESDI cable. http://invalid.ed.ntnu.no/~kamben/hwb/ca_ESDI.html

Halifax Area Personal Computer Society ESDI drives information. http://www.chebucto.ns.ca/Technology/HAPCS/hard_drive.html#ESDI_tag

Ian Harries Documents and Information Interfacing to the IBM-PC Parallel Printer Port. http://www.doc.ic.ac.uk/~ih/doc/par/