Digital Equipment Corporation

 

"Digital Equipment Corporation (DEC /dɛk/), using the trademark Digital, was a major American company in the computer industry from the 1960s to the 1990s. The company was co-founded by Ken Olsen and Harlan Anderson in 1957. Olsen was president until he was forced to resign in 1992, after the company had gone into precipitous decline.

The company produced many different product lines over its history. It is best known for the work in the minicomputer market starting in the mid-1960s. The company produced a series of machines known as the PDP line, with the PDP-8 and PDP-11 being among the most successful minis in history. Their success was only surpassed by another DEC product, the late-1970s VAX "supermini" systems that were designed to replace the PDP-11. Although a number of competitors had successfully competed with Digital through the 1970s, the VAX cemented the company's place as a leading vendor in the computer space.

As microcomputers improved in the late 1980s, especially with the introduction of RISC-based workstation machines, the performance niche of the minicomputer was rapidly eroded. By the early 1990s, the company was in turmoil as their mini sales collapsed and their attempts to address this by entering the high-end market with machines like the VAX 9000 were market failures. After several attempts to enter the workstation and file server market, the DEC Alpha product line began to make successful inroads in the mid-1990s, but was too late to save the company.

DEC was acquired in June 1998 by Compaq in what was at that time the largest merger in the history of the computer industry. During the purchase, some parts of DEC were sold to other companies; the compiler business and the Hudson Fab were sold to Intel. At the time, Compaq was focused on the enterprise market and had recently purchased several other large vendors. DEC was a major player overseas where Compaq had less presence. However, Compaq had little idea what to do with its acquisitions,^[1][2] and soon found itself in financial difficulty of its own. Compaq subsequently merged with Hewlett-Packard (HP) in May 2002"--Taken from Wikipedia

Jazz Computer

"The Jazz computer architecture is a motherboard and chipset design originally developed by Microsoft for use in developing Windows NT. The design was eventually used as the basis for most MIPS-based Windows NT systems.

In part because Microsoft intended NT to be portable between various microprocessor architectures, the MIPS RISC architecture was chosen for one of the first development platforms for the NT project in the late 1980s/early 1990s. However, around 1990, the existing MIPS-based systems (such as the Turbo channel-equipped DECstation or the SGI Indigo) varied drastically from standard Intel personal computers such as the IBM AT—for example, neither used the ISA bus so common in Intel 386-class machines.

For those and other reasons, Microsoft decided to design their own MIPS-based hardware platform on which to develop NT, which resulted in the Jazz architecture. Later, Microsoft sold this architecture design to the MIPS Computer Systems, Inc. where it became the MIPS Magnum.

The Jazz architecture includes:

• a MIPS R4000/R4400 or compatible microprocessor
• an EISA bus
• a framebuffer for video output (the G364 framebuffer)
• PS/2 connectors for mouse and keyboard
• a floppy-disk controller
• onboard 16-bit sound system
• onboard National Semiconductor SONIC Ethernet
• onboard NCR 53C9x SCSI chipset for hard disk and CD-ROM interface
• standard IBM AT serial and parallel ports
• IBM AT-style time-of-year clock

This design was simple enough and powerful enough that a majority of Windows NT-capable MIPS systems were based on modified versions of the Jazz architecture. A list of systems which more or less were based on Jazz includes:

• MIPS Magnum (R4000 PC-50 and SC-50 versions)
• Acer PICA – uses S3 video card
• Olivetti M700 – has different video and sound system
• NEC RISCstation – Jazz with PCI

The Jazz systems were designed to partially comply with the Advanced RISC Computing (ARC) standard, and each used the ARC firmware to boot Windows NT. Other operating systems were also ported to various Jazz implementations, such as RISC/os to the MIPS Magnum.

There were also some MIPS systems designed to run Windows NT and comply with the ARC standard, but nevertheless were not based on the Jazz platform:

• DeskStation Tyne
• NeTpower FASTseries Falcon
• ShaBLAMM! NiTro-VLB
• Siemens-Nixdorf RM-200, RM-300 and RM-400" Taken from Wikipedia

DEC (Digital Equipment Corporation) Manuals 

Berkeley UNIX moves to Walnut Creek  

Walnut Creek Collection 

I had a MIPS SGI Octane with 3dLabs graphics card in 1998 running NetBSD, FreeBSD and Windows NT. I also had a IBM Aptiva. In 2000 I worked on SELinux on the NSA mailing list.

 

Hewlwett Packard Operating Environment.

Possibly the Windows Team starts in the Hewlett Packard operating environment for OpenVMS or Digital's Gatekeeper from New Zealand's ftp.zx.net.nz World-Wide Web Server FTP Server, but who are you going to call? Start updating to x86. Start with the 95 Win32 SDK. Find the MAPI Sample. Install Azure DevOps which comes with the Education Hub on Azure. For Computer Science Majors or Alumni. With the default collection and a OS project. Named OS the path should be _git/OS

In Cygwin use:

wget -r --no-parent

to cache a directory

Intsall GitFVFS from GitHub to speed up the cloning and pushing of repositories.

You can read about the Windows Repo here: VFS for Git: Git at Enterprise Scale

Windows 10 Enterprise and Education You may want 10 2019 LTSC like me so you'll have until 2029.

Install Cygwin, the minimum Delev category and the latest JDK from Oracle. Clone the Java JDK from Github and install at least the Visual Studio 2019 Build Tools. All Devops projects should be in the _git directory.

Windows Interoperability

 In 2009 Microsoft tried there Interoperability with UNIX/LINUX with not much success with the publicin Windows 10 it is getting better please read Microsoft learn for complete details. Some of the open group projects are openpegusus for WBEM and motif for a standard window.

Open Specifications Dev Center