Shugart bus
The Shugart bus is the de facto standard for floppy disk drive interfaces created by Shugart Associates. It encompasses a 50-pin interface for 8-inch disk drives, and a 34-pin for -, - and 3-inch disk drives. Shugart 50-pin and 34-pin are similar in pinout. However the 34-pin used in -inch drives is not similar to the IBM PC type -inch format.
