NCR 5380

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The NCR 5380 is an early SCSI controller chip developed by NCR Microelectronics. It was popular due to its simplicity and low cost. The 5380 was used in the Macintosh Plus and in numerous SCSI cards for personal computers, including the Amiga. The 5380 was second-sourced by several chip makers, including AMD and Zilog.

The NCR 5380 also made a significant appearance in DEC VAX series of computers on various qbus expansion cards and as an integrated scsi controller in numerous VAXStation, MicroVAX and VAXServer products.