The NCR 53C9x is a family of application-specific integrated circuits (ASIC

ASIC

ASIC may refer to:* Application-specific integrated circuit, an integrated circuit developed for a particular use, as opposed to a customised general-purpose device.* ASIC programming language, a dialect of BASIC...

) produced by the former NCR Corporation

NCR Corporation

NCR Corporation is an American technology company specializing in kiosk products for the retail, financial, travel, healthcare, food service, entertainment, gaming and public sector industries. Its main products are self-service kiosks, point-of-sale terminals, automated teller machines, check...

 for implementing the SCSI

SCSI

Small Computer System Interface is a set of standards for physically connecting and transferring data between computers and peripheral devices. The SCSI standards define commands, protocols, and electrical and optical interfaces. SCSI is most commonly used for hard disks and tape drives, but it...

 protocol in hardware. The 53C9x is a low-cost solution and was therefore widely adopted by OEM

OEM

OEM means the original manufacturer of a component for a product, which may be resold by another company.OEM may also refer to:-Computing:* OEM font, or OEM-US, the original character set of the IBM PC, circa 1981...

s in various motherboard

Motherboard

In personal computers, a motherboard is the central printed circuit board in many modern computers and holds many of the crucial components of the system, providing connectors for other peripherals. The motherboard is sometimes alternatively known as the mainboard, system board, or, on Apple...

 and peripheral device designs. The original 53C90 lacked direct memory access

Direct memory access

Direct memory access is a feature of modern computers that allows certain hardware subsystems within the computer to access system memory independently of the central processing unit ....

 (DMA) capability, an omission that was addressed in the 53C90A and later in the 53C94 and 53C96 versions.

The 53C90(A) supported the SCSI-1 protocol and implemented the eight bit bus. The 53C94 supported SCSI-2 features, as well as SCSI-1, and the 53c96 added support for the high voltage differential (HVD) bus.

QLogic

QLogic

QLogic Corporation is an Aliso Viejo, California-based designer and supplier of storage networking, high performance computing networking, and converged infrastructure solutions...

 FAS216 and Emulex

Emulex

Emulex Corporation is a California based manufacturer of storage networking infrastructure solutions. The company's products include Fibre Channel host bus adapters , Fibre Channel over Ethernet converged network adapters , embedded storage switches, storage I/O controller and SAN storage switch...

 ESP100 chips are a drop-in replacement for the NCR 53C94. The 53C90A and 53C94/96 were also produced under license by Advanced Micro Devices

Advanced Micro Devices

Advanced Micro Devices, Inc. or AMD is an American multinational semiconductor company based in Sunnyvale, California, that develops computer processors and related technologies for commercial and consumer markets...

 (AMD).

A list of systems which include the 53C9x chipset includes:

53C94

• Sun Microsystems
  Sun Microsystems
  Sun Microsystems, Inc. was a company that sold :computers, computer components, :computer software, and :information technology services. Sun was founded on February 24, 1982...
  
   SPARCstation
  SPARCstation
  The SPARCstation, SPARCserver and SPARCcenter product lines were a series of SPARC-based computer workstations and servers in desktop, deskside and rack-based form factor developed and sold by Sun Microsystems...
  
  s and the SPARCclassic
• DEC 3000 AXP
  DEC 3000 AXP
  DEC 3000 AXP was the name given to a series of computer workstations and servers, produced from 1992 to around 1995 by Digital Equipment Corporation. The DEC 3000 AXP series formed part of the first generation of computer systems based on the 64-bit Alpha AXP architecture...
  
  
• DECstation
  DECstation
  The DECstation was a brand of computers used by DEC, and refers to three distinct lines of computer systems—the first released in 1978 as a word processing system, and the latter two both released in 1989. These comprised a range of computer workstations based on the MIPS architecture and a...
  
  s and the PMAZ-A TURBOchannel
  TURBOchannel
  TURBOchannel is an open computer bus developed by DEC by during the late 1980s and early 1990s. Although it was open for any vendor to implement in their own systems, it was mostly used in Digital's own systems such as the MIPS-based DECstation and DECsystem systems, in the VAXstation 4000, and in...
  
   card
• MIPS Magnum
  MIPS Magnum
  The MIPS Magnum was a line of computer workstations designed by MIPS Computer Systems, Inc. and based on the MIPS series of RISC microprocessors. The first Magnum was released in March, 1990, and production of various models continued until 1993 when SGI bought MIPS Technologies. SGI cancelled the...
  
  
• Power Macintosh G3
  Power Macintosh G3
  The Power Macintosh G3, commonly called "beige G3s" or "platinum G3s" for the color of their cases, was a series of personal computers designed, manufactured, and sold by Apple Computer, Inc. from November 1997 to January 1999...
  
   (often used as a secondary SCSI controller with MESH (Macintosh Enhanced SCSI Hardware) as the primary)

53C96

• Macintosh Quadra
  Macintosh Quadra
  The Macintosh Quadra series was Apple Computer's product family of professional high-end Apple Macintosh personal computers built using the Motorola 68040 CPU. The first two models in the Quadra line were introduced in 1991, and the name was used until the Power Mac was introduced in 1994...
  
   650
• Macintosh LC475