SASI is the acronym for Shugart Associates System Interface. It was developed in the 1970s by Shugart, at the time a dominant manufacturer of disk drives. It was meant to be an intelligent interface for disk drives only. Offering only 8-bit (Narrow), single-ended, asynchronous operation, by today’s standards it was very slow (1.5 Mbytes per second). The standard connector for in-cabinet cabling is the non-shielded, 50-pin, female, low-density, connector having two rows of 25 pins each on 0.1 inch spacing. The standard connector for cabling outside the cabinet is the shielded, 50-pin, male, “centronics” type connector. In 1981 Shugart and NCR submitted SASI to the ANSI committee X3T9.2 as an open architecture I/O bus for disk drives. ANSI accepted the project, changed the name to Small Computer System Interface and added some major improvements to the specification. It was approved in 1986 by ANSI as document IEEE X3.131-1986. Today it is called SCSI-1. SASI is now long obsolete and, although many aspects of SCSI were backward compatible with SASI, it is very problematic.
I seem to remember hearing the term SASI in the past. What is it?
Archived in the category: Computer Hardware
Posted by zyreel on 23 Jun 08 -
