Disk Drive Interface Characteristics.

摘要

The report describes and compares the various characteristics of the interface between computer disk drives and disk controllers for those drives using removable disk packs having a storage capacity of approximately 100million bytes or greater. It presents the findings of an investigation conducted for the National Bureau of Standards in support of the possible development of a Federal Information Processing Standard. Disk pack interchangeability,drive performance characteristics,interface functional characteristics,and interface electrical characteristics are described. A conclusion is reached that although nearly all of the drives reviewed use the same type of disk pack,that at the circuit and electrical level substantial differences of a detailed engineering nature exist in the interfaces. Two appendices are given describing (a) details of track format (IBM-compatible) and (b) drive cable attachments and pin numbers. Thirty-two tables and five figures are given.