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DVI Technology Products:

  Intel Pro750 Product Family (1989)

    by Douglas Dixon

The first commercial DVI product, the Intel Pro750 ADP, shipped in July 1989. 

This was the first PC product that provided real-time, interactive, full-screen, 30 fps motion video and audio playback -- and streaming from a CD-ROM! 

And this ran under DOS on the 386-based PC/AT platform, almost a decade before the introduction of DVD (around 1996 / 1997).

The DVI Pro750 Application Development Platform
    Product Components

Intel Pro750 Product Family
    (Intel product brochure, March 1989)
    Hardware / Software Features, Specifications

The DVI Pro750 Application Development Platform

DVI Technology was first introduced to the public by Sarnoff and G.E. in 1987, and then was acquired by Intel in October 1988. The first DVI implementation used the "Tower board" hardware, with the initial VDP chips installed on oversize PC boards -- which required a modified case with a tower enclosure. This hardware were used by early partners for pilot applications as the DOS-based software was improved and development continued on the next-generation chips and associated board hardware.

    dvi_vg_sys.jpg (59165 bytes)                ipo_chips_89.jpg (42895 bytes)
    DVI Tower board system    Pro750 ADP FCS 7/21/98

The first commercial DVI product, the Pro750 ADP (Application Development Platform), was announced in March 1989, with the first customer ship on July 21, 1989. This was a joint product with Intel and Microsoft.

The Pro750 ADP was based on the new "7-board set" -- actually three boards (Video, Audio, Utility/CD-ROM) in three slots (with possible overhang), plus add-in piggyback modules for a Video Digitizer, Audio Digitizer, and 2 GB of VRAM memory. 

The DVI product was packaged as the Pro750 ADP, a turn-key development system which included a IBM PC/AT-compatible computer with 40 MB hard drive, the full DVI 7-board set, and the DVI software. The product was introduced at $22,000.

    Pro750 Application Development Kit      Pro750 Application Development Platform

Since the Pro750 ADP was designed as a development system, with the digitizer hardware and authoring software, Intel also made available the  Pro750 End-User Kit for configuring DVI-based delivery systems, with the three main boards plus VRAM, and the run-time software and diagnostics.

DVI Pro750 Product Components

- The Video board held the Intel 82750 PA/DA Video Display Processors (VDP) chips. The microcoded 82750PA pixel processor ran at 12.5 MIPS for video and image decompression and graphics effects. The 82750DA display processor supported horizontal resolutions up to 1024 pixels with vertical resolutions up to 585 lines, with full color (up to 16.8 million colors). 

- The Audio board used a TMS 320C10 DSP to provide multi-track. multi-channel digital audio, with up to four tracks mixed down to two output channels., at up to 32 KHz, including real-time ADPCM compression and decompression.

- The Utility board included a CD-ROM interface (including internal or external Sony players), plus two game ports for 3-button joysticks.

- The DVI system software included RTX (Real-time Executive), a multi-tasking extension under MS-DOS, and AVSS (Audio/Video Support System), a real-time manager for full-motion video playback. The system software and authoring tools were designed for multimedia application development under DOS in the C programming language. 

- The DVI authoring tools included tools to capture and compress still images and digital audio directly on the Pro750 system, the Audio/Video Editing Tool to preview and edit video and audio files for playback, and CD-ROM layout and formatting tools for disc replication.

- The Edit-Level Video (ELV) support real-time capture and compression of video directly on the Pro750 system for previewing the final application. Then, for final video quality, the original video is shipped to the DVI Compression Service to create Presentation-Level Video (PLV) files.

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Intel Pro750 Product Family -- based on DVI Technology


From Intel product brochures:


    Integrating Motion Video, Audio and Graphics on a CD-ROM

The Intel Pro750 product family incorporates Digital Video Interactive (DVI) technology to open a new world of interactive multimedia software for application developers and video producers. With Pro750 hardware and software products, developers can provide new dimensions in personal computer software, offering full-motion video, multiple-track audio, high-resolution still video images and dynamic graphics, all in a single, integrated application.

The Pro750 Application Development Kit (ADK) is a complete development environment, consisting of three boards and four add-on modules for installation in a PC ATT bus, PC-compatible computer. System software, authoring and production software tools provide the application developer with the support tools necessary for DVI software development in the C programming language.

The Pro750 End-User Kit (EUK) is a subset of the ADK and provides the basic functionality required to run a DVI application program. It consists of the ADK's three main boards with a single add-on memory module and driver software.

    DVI Pro750 Application Development Platform


    Turn Your PC into a Powerful Interactive Video/Audio/Graphics System

  • Full-screen, full-motion video 72 minutes on a CD-ROM 
  • Synthetic video-photographic texture-mapping on 2D and 3D objects
  • High-resolution stills 
  • High speed graphics
  • High-capacity video and audio storage
  • Real time compression of edit-level motion video, audio, and high-resolution stills
  • 360-degree panoramas 
  • Multiple, interactively mixed video & audio streams
  • Can work with any digital medium including CD-ROM. hard disk or WORM
  • Compact. flexible, all-digital medium

- 72 minutes of full-motion video and audio 
- 20 minutes or motion video, with 7 hours of voice-over and 5000 high-resolution stills 
- 2 hours of quarter-screen video with thousands of textures and 3D objects


  • Video Board with Intel 82750 PA/DA Video Display Processors
  • Audio Board
  • Utility Board
  • Add-on VRAM Modules
  • NTSC Video Digitizer Module
  • Audio Digitizer Module
  • Drivers and Diagnostics
  • Run-time System Software
  • Authoring Tools
  • DVI Compression Service
  • Training and Support

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Hardware Features


The 82750 chip set is the heart of today's DVI technology. The chip set is designed to offer an integrated solution to video and graphics. Its flexible features support the decompression and display of motion video images, video compression, image manipulation and dynamic graphics.

The 82750PA is a pixel processor operating at 12.5 MIPS. It is a programmable device with on-chip RAM for microcoded programs. The 82750DA is a highly flexible display processor. It offers horizontal resolutions up to 1024 pixels with vertical resolutions up to 585 lines conforming to NTSC. PAL and graphics standards. Up to 16.8 million colors can be displayed at a time.

        DVI Pro750 Application Development Kit


The Pro750 Video Board contains the Intel 82750PA/DA Video Display Processors. It is designed for output to an analog RGB display. The board also includes an RCA phono jack for video input to the optional NTSC Video Digitizer Add-on Module. Connectors are included on the video board to allow the Digitizer to be installed as a piggyback module on the video board. The Digitizer Module genlocks to an external video source. allowing images to be captured at a resolution up to 768 pixels by 512 lines and allowing images to be superimposed on an NTSC input. The combination Video Board and Digitizer Module occupy a single slot.

Connectors on the Video Board and VRAM Modules allow VRAM Modules to be configured based upon the needs of an application. The Pro750 EUK provides 1MB of VRAM. The standard ADK is shipped with 2MB of VRAM. Up to 4MB of VRAM can be installed in a Pro750 system. Configurations utilizing two or more VRAM Modules extend into the adjacent slot in a standard AT bus system.

Video Board

  • 12.5 MIPS Pixel Processor, Display Processor
  • 1 MB dual-ported video RAM, expandable to 4 MB with VRAM Modules
  • Video Driver supports multiple, bitmaps with programmable resolutions and pixel depths
  • Output to standard analog RG B monitor 

Video Digitizer Module

  • Piggybacks onto video board
  • Accepts NTSC video
  • Genlocks video board to external video, allowing images to be superimposed on NTSC input
  • Data written to VRAM at up to 768 pixels by 512 lines
  • Captured data immediately displayable


The Pro750 Audio Board uses a TMS 320C10 Digital Signal Processor to provide multi-track. multi-channel digital audio. Up to four tracks are dynamically mixable down to two output channels. Variable sampling rates are provided up to 32 KHz over an 84 dB dynamic range. Audio software algorithms include real-time ADPCM compression and decompression. For output there are 2 RCA phono output jacks for connection to a standard stereo audio amplifier. Two additional RCA phono jacks are used for input to the Audio Digitizer Add-on Module. Connectors are included on the board for the Audio Digitizer Module.

Audio Board

  • TMS 320C10 Digital Signal Processor 
  • Variable sampling rates up to 32 KHz 
  • Bit rate to approx. 240K bits/second
  • 84 dB dynamic range 
  • Real-time ADPCM compression and decompression
  • Audio Driver decompresses and mixes parallel input streams dynamically to two outputs
  • Output via RCA phono jacks to standard stereo audio amplifier

Audio Digitizer Module

  • Piggybacks onto audio board
  • Two channels of audio input


The Utility Board includes the interface to a Sony 6100 series CD-ROM player. A 50-pin connector is also mounted on the board for connecting to an internal Sony 510 CD-ROM player. The CD-ROM driver is compatible with Microsoft CD-ROM Extension drivers for DOS. Two high-performance game port connectors are also mounted on the backplane for use with two 3-button joysticks.

Utility Board

  • Buffered interface to a Sony CD-ROM drive with MSCDEX compatible driver
  • 128 KB of AT RAM
  • Supports two game ports for 3-button joysticks

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Software Features


System Software libraries are included to allow DVI data files to run in the DOS environment. These are libraries of object files for compiling and linking into a final DVI application. RTX, or Real-time Executive, is a multi-tasking extension of PC-DOST and MS-DOST and includes a library of routines to allow the many capabilities of DVI to work concurrently.

AVSS, or Audio/Video Support System, is a real-time manager of digital data files, read from disk or from RAM, which coordinates the simultaneous support and presentation of digital audio and video. AVSS includes routines for controlling various combinations of full-motion video, digital audio and still frames individually or in combination.

The Video Microcode Library allows access to the capabilities of the Intel 82750 chip set. This library includes routines for decompression of full-motion video, image processing, and for the creation of graphics and video effects. A Graphics Library is included to provide C-language access to the high-performance capabilities of the 82750 chip set.

System Software 

  • RTX - Real-time executive - multitasking extension of MS-DOS 
  • AVSS - Audio/Video Support System - real-time manager of data from discs or RAM to video and audio subsystems
  • Graphics Library
  • Video Microcode Library and paging support, for graphics and video compression and decompression

        Sample DVI Application Screens


To assist in the creative process of editing and assembling audio/video data files and software routines into a finished application, the ADK includes Authoring Tools software.

The application developer can use Edit-Level Video (ELV) software tools for real-time compression of video directly on a PC using the processing power of the 82750 chip set. This allows the developer to work with ELV video in previewing the final application. Tools are included to provide ELV compression at a rate of 10 frames per second, to playback ELV data files, and to incorporate ELV files into an application. Then, for final video quality, the DVI Compression Service is used to create Presentation-Level Video (PLV) files.

Software tools are included to allow still images to be captured and compressed at various resolutions and quality levels on the Pro750 system. This gives the application developer creative control over the final image file size and quality.

Tools are also included for capturing and editing digital audio. The developer has control over the quality level (sampling rate) and can program the audio for dynamic mix and presentation of the two output channels.

For previewing and editing video and audio data files, the Audio/Video Editing Tool is provided to allow the developer to select edit and linking points for data files. It creates files for AVSS to use in running the final program.

To assist with preparation of compressed data for replication on CD-ROMs, the ADK includes layout and formatting software tools.

Authoring Tools

  • Operate on a DVI Application Development System
  • Still image capture and compression
  • Edit·level motion video compression and playback
  • Audio compression and editing
  • CD-ROM layout and formatting
  • Microcode development tools
  • Standard "C' development environment


The Driver Software allows the Pro750 board products to operate with DOS and the PC computer. Diagnostics Software is also supplied to test the operation of the boards.


Demonstration software includes sample code to demonstrate microcode routines and a collection of examples of application software.

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Services and Support

        Sample DVI playback system


The Pro750 ADK is designed to work in conjunction with Intel Princeton Operation Compression Service. After the developer has selected motion video for use in a final application, it is sent on master videotape to a DVI Compression Service facility for Presentation-Level Video compression. The developer can play back this compressed motion video on the Pro750 ADK or EUK.


Intel Princeton Operation offers a training program for application developers, programmers, and hardware developers. The curriculum includes hands-on training covering all aspects of the Pro750 family of hardware and software products.


Technical customer support is available through an on-line electronic mail system, facsimile and telephone.

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Video Board: Standard Full Slot PC AT -13.2" x 4.5"
    Video Digitizer Module (option)
    VRAM Module 1
    VRAM Module 2 (option)
Audio Board: Standard Full Slot PC AT -13.2" x 4.5"
    Audio Digitizer Module (option)
Utility Board: Standard Full Slot PC AT -13.2" x 4.5"

       DVI  Video, Audio, Utility Boards, with piggyback Video and Audio Digitizer Modules, and VRAM Module

Board Interface Connections

Video Board: -Analog RGB output (female DB-9 connector)
    -Composite Video input (female RCA phono connector)
Audio Board: -2 Channel output (female RCA phono connector)
    -2 Channel input (female RCA phono connector)
Utility Board: -External Sony Bus CD-ROM cable connector
    -Internal 50-pin bus connector for Sony CD-ROM connector
    -2 joystick inputs (female DB-9 connectors)


-PC AT or compatible 80286 or 80386 based computer with 3 available AT bus slots and 640K system memory. (With 2MB or more of VRAM the Video Board will extend into fourth slot in some PCs.)
-Analog RGB Monitor (for video board output)
-Stereo Amplifier and 2 Audio Speakers


-Sony 510-12 Internal Half-height CD-ROM Player or Sony 6100 Series External CD-ROM Player with MS-DOS CD-ROM Extensions
-2MB of EMS Memory
-3-Button Joystick


-IBM PC-DOS 3.3 or Microsoft MS-DOS 3.3 Operating System
-Microsoft C Version 5.1 Compiler
-Microsoft LIB Library Manager. Version 3.04 or higher recommended
-Microsoft LINK Overlay Linker. Version 3.51 or higher required
-Microsoft MAKE Program Maintenance Utility. Version 4.02 or higher recommended
-Microsoft MASM Assembler. Version 5.1 or higher recommended


<see brochure>


Environment / Requirement
Operating Temperature / 15.6°C to 30°C
Storage Temperature / 10°C to 43°C
Humidity / 8% to 80%
Non-Operating Humidity / 20% to 80%


Order Code / Description

PRO750/1200ADK - Pro750 Application Developer Kit including Video Board with add-on modules for 2MB VRAM and Video Digitizing, Audio Board with Audio Digitizer Add-on Module, and Utility board. Application Development Software includes Runtime System Software, Authoring Tools, Drivers, Diagnostics, and Demonstration Software.

            Developer Kit, End-User Kit

PRO750/1200EUK - Pro750 End-User Kit includes Video Board with 1MB VRAM Add-on Module, Audio Board, and Utility Board. Software Drivers and Diagnostics are included.


Intel Pro750 Product Family Brochure, March 1989, 4 pp.

  • March 1989 © Intel Corporation 1989 Order Number: 240450-001
  • Printed in USA/0389/10K/LKA/PSZ

Intel DVI Technology / Commercial Board Products - Preliminary Product Information, 1988, 2 pp.

  • © Intel Corporation, 1988

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