XENIX*3.0 OPERATING

SYSTEM

@INTELCORPORATl0N1984

·XENIX ts a trademark of MIcroaoft Corporation tUNIX l8a tradamarkof Bell Laboratone8

• XENIX 3.0 Industry Standard Multiuser Operating System

• Fully licensed version of the UNlXt operating system optimized for the Intel 80286 processor

• Leading edge microprocessor imple-mentation of UNIX, fastest noating point performance on a microprocessor

• Important commercial OEM enhancements

• Supports multiple levels of integration:

components, boards and systems

• Supported by Intel's worldwide post-sales service and support organizations

ORDER·NUMBER 230752-003

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System for

3.0 provides the OEM with a-complete software base on which to build value-added functionality. Itincludes the operating system, the C language; teXt processors, development tools, sYstem accounting and security features, and

·XENIX IS a trademark of Microsoft Corporatton

commercial enhancements that make it the optimum foundation for OEM

appli-cation software

XENIX has achieved this mar-ket success through a solid com-bination of UNIX system technol-ogy, Microsoft value-added product development, and Intel's experience in microprocessor technology. In the fu-ture, XENIX 3.0 will benefit from ad-vances in AT&T UNIX technology, Microsoft software technology and Intel semiconductor and system technology.

XENIX is also an extremely powerful operating system, providing the applica-tions programmer with a wealth of de-velopment to{)ls and utilities for bring-ing OEM products to market quickly.

...

XENIX 3.0: Leading Edge UNIX Performance on a Micro

As the first UNIX operating system de-rivative optimized for the iAPX 286, XENIX 3.0 alone can take full advan-tage of the 80286 's unique features:

On-chip memory management and protection provides two key ad-vantages for XENIX 3.0 over other microprocessor UNIX implementations.

First, on-chip memory management and protection drastically reduces the over-head in accessing system memory as compared to the usual separate memory management unit. With this func-tionality right on the chip, the operating system works more smoothly and efficiently.

Second, on-chip memory management and protection circuitry ensures that each version of XENIX 3.0 will be very com-patible with every other version. This heretofore impossible level of compati-bility aids OEM, software developers, and end users due to the wider availability of compatible software.

Advanced microprocessor architecture provides pipeline processing, wherein a continual flow of instructions is kept in the CPU queue, results in throughput several times faster than the fastest competing

microprocessor.

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CONVERGENT TECHNOLOGY MINI FRAME ALTOS 9 8 6

-Fast floating pOint processing

is due to XENIX 3.0 support of the Intel iAPX 287 math coprocessor. Floating point processing deliVers throughput that is an order of magnitude faster than non-floating point processing. Extra high processing speeds are needed in applica-tions such as data base processing;

commercial data reduction and graphics.

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Faster, More Reliable Still When Teamed with Other Intel Systems Components

The throughput enhancements in the XENIX 3.0 software are pushed to even greater speeds by special hardware architecture in Intel's systems and board products.

MULTIBUS® System ArchItec-ture is the industry-standard system bus. It accommodates any of the special-purpose Intel iSBC'" boards, as well as a multitude of third party Multibus boards and standard peripherals, for easy sys-tem expansion.

iLBXTM (Local Bus Exchange) is an Intel hardware innovation that increases the amount of local memory accessible by the operating system to sig-nificantly improve system throughput.

Error Correction Circuitry (ECC) automatically detects and corrects soft errors in RAM. This on-board, self-correction facility reduces errors and further underscores data integrity.

See Intel benchmark series

A Faster Operating System Means Market Leadership

The combination of the industry's most widely accepted operating system for . multi-user, interactive applications with the industry's fastest and most advanced microprocessor gives the OEM a far superior price/performance ratio than is

XENIX 2!16 combines UNIX technology from

available through other options. The re-sult for the OEM: market leadership due to the ability to more attractively price products based on superior performance.

XENIX 3.0: The Best of Everything

The XENIX 3.0 Operating System con-tains the best of many vendors' UNIX!

XENIX development efforts during the last ten years (see Fig. above). We have taken the best features of many UNIX versions-ease of use, flexibility, per-formance, security, reliability-and added our own enhancements (not the least of which is compatibility with the iAPX 286) to make XENIX 3.0 the op-timum software foundation for the commercial OEM.

Superior Date Reliability and Integrity

XENIX 3.0 contains enhancements to provide extremely high data reliability and integrity, particularly important to the OEM who is adding value to a system product. The following enhancements in XENIX 3.0 contribute to uniformly reli-able data at all stages of application development.

Automatic disk recovery is an improvement of the UNIX file system that allows automatic recovery of the file system in the event of unexpected system shutdown.

Record ,nd file locks arbitrate multiple-access requests to the same re-cord or file, allowing the programmer to extend locks to a single record, group of records or the entire file. This is im-portant in multi-user applications to pre-vent two or more users accessing and updating the same information simultaneously.

XENIX System Analysis Test (XSAT) is a complete hardware-spftware diagnostic package included with all Intel integrated system products.

XSAT provides a total analysis of a XENIX-based system, ensuring relia-bility even after the OEM configures new drivers into the system.

Tools for Easy System Configuration

In addition to increased data relia-bility measures, XENIX 3.0 has been functionally enhanced for easier system configuration.

An interactive configura-tion utility allows the user to specify device drivers, disk buffers, memory size, etc., making it easy for the OEM to meet design requirements. XENIX 3.0 includes over 12 device drivers for high-speed controllers.

Friendlier Interface

The standard UNIX human interface has been enhanced in XENIX 3.0, with the

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addition of vi, a full-screen editor, for easier and faster application development.

The XENIX C shell augments the capa-bilities of the slandard~UNIX shell with the ability to maintain histories of in-voked processes and pI"lWide the alias featun:, savi!lg re-keying of often-used commands. 'XENIX 3.0 also pI"lWides the vis~ shell, a menu driven com-mand interpreter which makes full use of the screen to display status and environ-mental information to the user. It has a built-in HELP facility and allows users to add new applications to the menu.

Intel's Open Systems Approach

Intel believes that system components-haIdware or software-should be fully compatible with other family members at any level of integration and open to future VLSI advancements. XENIX 3.0 was designed to be part of the Open Systems concept.

Portability from Chip to Board to System

Intel's XENIX 3.0 Operating System is available for and fully 'compatible across Intel component, boaId and ~ystem de-signs, something that no other XENIX version offers.

Such portability gives OEMs the fleld-bility to choose the most appropriate and profitable level of integration for their applications. Component-level

integra-tion allows the OEM to meet unique design requirements; boa!d and , system-level integration afford

time to market. XENIX-based applications from the , chip to the system level or , even from one Intel processor to another.

Open

Configurability through Third-Party Software and Hardware

XENIX 3.0 users can tap into an exten-sive base of existing third-party lan-guages and application packages for almost endless versatility in system configurability. There are hundreds of such packages available today with many more on the way. 10 assure the ' availability and quality of these pack-ages on our systems, we have the Inde-pendent Software Vendor Program.

Through this activity, software vendors are given Intel systems as well as techni-cal assistance to aid them in porting their packages. The resulting product is thoroughly evaluated by Intel prior to certification for operation on our system products.