Of the three ECL projects, the VAX 9000 was the only one that was directly commercialized.

The VAX 9000, announced in 1989, was both microprogrammed and pipelined, and performed branch prediction.

more / BSD was mt Xinu's version of 4. 3BSD-Tahoe for VAX and HP 9000, incorporating code from the University of Utah's HPBSD.

* DEC ( VAX 9000 )

* Multi-chip unit, a high-density packaging system that contains the central processing unit of the VAX 9000 minicomputer

It was used in the VAX 6000, VAX 8000 ( 82xx, 83xx, 85xx, 87xx, 88xx models ) and the VAX 9000 systems.

; Vax Common Lisp: Digital Equipment Corporation's implementation that ran on VAX systems running VMS or ULTRIX

Assembler language development at Psion itself was carried out using cross-development tools, including a cross assembler and linker, all of which ran on a DEC VAX.

Ultrix ran on multiprocessor systems from both the VAX and DECsystem families.

PseudoStation as well as Intergraph's IGDS program ran on a modified version of Digital Equipment Corporation's VAX super-mini computer.

Upgrades to the Helix product line were continuous during the 1980s, but the company spent a tremendous amount of time and money working on a version known as Remote Helix which ran the basic Helix development system on top of VAX based databases.

While some PL / M compilers were " native ", meaning that they ran on systems using that same microprocessor, e. g. for the Intel ISIS operating system, there were also " cross compilers " which ran on other operating environments such as Microsoft's DOS, and Digital Equipment Corporation's VAX / VMS.

Later versions were based on Unix System V Release 2 ( 1987 – 89 ) and ran on a cluster of VAX and NS32332-based computers, followed by a BSD / OS-derived version ( 1991 – 93 ) for a cluster of 486 / Pentium computers.

System V ran on the DEC VAX and PDP-11 machines.

It ran originally on minicomputers such as Prime and Digital Equipment Corporation VAX.

This in effect created two different versions of MEDUSA: CIS MEDUSA ( owned by Computervision, which ran on Prime and VAX workstations ) and Prime MEDUSA ( which only ran on Prime computers ).

Before its demise, the Holos Server product ran under Windows NT ( Intel and Alpha ), VMS ( VAX and Alpha ), plus about 10 flavours of UNIX, and accessed over half-a-dozen different SQL databases.

Franz Lisp was available free of charge to educational sites, and was also distributed on Eunice, a Berkeley UNIX emulator that ran on VAX / VMS.

The VAX Macsyma that ran on Franz Lisp was called Vaxima.

The VAX was a best-seller, with over 400, 000 sold, and its sales through the 1980s propelled the company into the second largest in the industry.

The Eclipse family of systems was later introduced with an extended upwardly compatible instruction set, and the MV-series further extended the Eclipse into a 32-bit architecture to compete with the DEC VAX.

Using Epicode, key portions of the VAX instruction set could be directly encoded into the PRISM, greatly improving performance.

The VAX divides memory into 4 fixed-purpose regions, each 1 GB in size.

DEC developed and maintained BLISS compilers for the PDP-10, PDP-11, DEC Alpha, DEC PRISM, Intel IA-32, Intel IA-64, and VAX, and used it heavily in-house into the 1980s ; most of the utility programs for the VMS operating system were written in BLISS-32.

Some advocated moving the VAX into the " high-end ", abandoning the low-end to the workstations.

Developers such as Maria Mariani, Soft-Art, Microlytics, Proximity, Circle Noetics, and Reference Software rushed OEM packages or end-user products into the rapidly expanding software market, primarily for the PC but also for Apple Macintosh, VAX, and Unix.

Thus, the latter machines have three distinct instruction codes for copying one register to another, copying a literal constant into a register, and copying the contents of a memory location into a register, while the VAX has only a single " MOV " instruction.

RADIX-50's 40-character repertoire ( 050 in octal ) can encode 6 characters plus 4 additional bits into one 36-bit word ( PDP-6, PDP-10 / DECsystem-10, DECSYSTEM-20 ); 3 characters plus 2 additional bits into one 18-bit word ( PDP-9, PDP-15 ); or 3 characters in one 16-bit word ( PDP-11, VAX ).

Another common representation of the Dhrystone benchmark is the DMIPS ( Dhrystone MIPS ) obtained when the Dhrystone score is divided by 1757 ( the number of Dhrystones per second obtained on the VAX 11 / 780, nominally a 1 MIPS machine ).

Alpha, originally known as Alpha AXP, is a 64-bit reduced instruction set computer ( RISC ) instruction set architecture ( ISA ) developed by Digital Equipment Corporation ( DEC ), designed to replace the 32-bit VAX complex instruction set computer ( CISC ) ISA and its implementations.

Internally, Alpha processors were also identified by EV numbers, EV officially standing for " Extended VAX " but having an alternative humorous meaning of " Electric Vlasic ", giving homage to the Electric Pickle experiment at Western Research Lab.

A persistent report attributed to DEC insiders suggests the choice of the AXP tag for the processor was made by DEC's legal department, which was still smarting from the VAX trademark fiasco.

Monster was a multi-user adventure game created by Richard Skrenta for the VAX and written in VMS Pascal.

DSM-11 was superseded by VAX / DSM for the VAX / VMS platform, and that was ported to the Alpha in two variants: DSM for OpenVMS, and as DSM for Ultrix.

Architectures with instruction sets implemented by complex microprograms included the IBM System / 360 and Digital Equipment Corporation VAX.

A similar approach was used by Digital Equipment Corporation in their VAX family of computers.

The PDP-10 was eventually eclipsed by the VAX superminicomputer machines ( descendants of the PDP-11 ) when DEC recognized that the PDP-10 and VAX product lines were competing with each other and decided to concentrate its software development effort on the more profitable VAX.

A " deluxe chatting program " for DIGITAL's VAX / VMS written by David Bolen in 1987 and distributed via BITNET took the name xyzzy.

Designed and built by General Electric, and incorporating 28 Digital Equipment VAX computers housed in Bangor, it was the most powerful radar in the world, capable of monitoring virtually the entire North Atlantic, from Iceland to the Caribbean.

Profile B was sponsored by Digital Equipment Corporation and implemented in VAX and Alpha systems as an I / O bus.

* November 2: The Morris worm, created by Robert Tappan Morris, infects DEC VAX and Sun machines running BSD UNIX connected to the Internet, and becomes the first worm to spread extensively " in the wild ", and one of the first well-known programs exploiting buffer overrun vulnerabilities.

Some examples of this are the NORD-1, the first minicomputer to have memory paging as a standard option, and the first machine to have floating-point instructions standard, the NORD-5, the world's first 32-bit minicomputer ( beating the VAX, often claimed the first, by 6 years )

As an aside, the three brought up a final test version on the main VAX used by the VMS development group.

Software previously distributed by the JPO is still available through commercial resources at Software Engineering Associates, Inc. ( SEA ) as are other combinations of host / target processors including WinX, Linux, Apple iBook, SPARC, VAX, 1750A, PowerPC, TI-9989, Zilog Z800x, Motorola 6800x and IBM 360 / 370 / z.

Its design was heavily influenced by work on the Modula-2 + language in use at SRC and at the Acorn Computers Research Center ( ARC, later ORC when Olivetti bought out Acorn ) at the time, which was the language in which the operating system for the DEC Firefly multiprocessor VAX workstation was written and in which the Acorn Compiler for Acorn Modula-2 Extended Language ( CAMEL ) at ARC for the ARX operating system project of ARM based Acorn Archimedes range of computers were written.

* ROSS / V ( RSTS / E Operating System Simulator for VAX ) -- RSTS on the VAX by EG & H.

Rational provided code generators and the cross-debuggers for then-popular instruction set architectures such as the VAX, Motorola 68000, and x86 ; much of this was accomplished through a partnership with Tartan Labs, founded by Bill Wulf to commercialize his work on optimizing code generators semi-automatically produced from architecture descriptions ( PQCC ).

The PDP-10 version of Interlisp became Interlisp-10 ; BBN had an internal project to build Interlisp-Jericho and there was a 1982 port to Berkeley Unix on the VAX by Stanford University, ISI and Xerox PARC, called Interlisp-VAX.

This was greatly influenced by the late 1970s success of the DEC VAX computer, a highly " elegant " and rather layered technology, realizable in a range of power.