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 ).

In the late 1970s, minicomputer performance was compared using VAX MIPS, where computers were measured on a task and their performance rated against the VAX 11 / 780 that was marketed as a 1 MIPS machine.

The VAX 11 / 780 with FPA ( 1977 ) is shown as having a rating of 1. 02 MWIPS.

The 11 / 74 was due to be introduced around the same time as the announcement of the new 32-bit product line and the first model: the VAX 11 / 780.

This instruction has been a part of the VAX instruction set since its original 11 / 780 implementation in 1977.

The 90x competed with the Digital Equipment Corporation VAX 11 / 780 which was the preferred platform for running Unix in the early 1980s.

The concept of the " porting base " was formalized, and the DEC VAX 11 / 780 was named for this Release.

DDM was run on Calma's proprietary dual monitor workstation hardware connected to Data General Nova and later Digital VAX 11 / 780-series computers.

The general form of a VAX 11 instruction would be:

The team had to spend considerable amounts of time improving or re-writing the tools, and even with these new tools it took just under an hour to extract the design on a VAX 11 / 780.

Simulations using a variety of small programs compared the 4 MHz RISC I to the 5 MHz 32-bit VAX 11 / 780 and the 5 MHz 16-bit Zilog Z8000 showed this clearly.

The system could communicate image data externally over an 80M per second " Yapbus " or a 2M per second multibus to other hosts, data sources or disks and had a performance measured equivalent to 200 VUPS, or 200 times the speed of a VAX 11 / 780.

The project was started at the end of 1978 shortly after UC Berkeley took delivery of their first VAX 11 / 780 ( named Ernie CoVax, the first of many systems with pun names at UCB ).

Implementations also exist for the Interdata 8 / 32, PDP-11, VAX, Alpha platforms and HP Integrity servers ; for the Honeywell, and for the Computer Technology Limited ( CTL, later ITL ) Modular-1 ; as well as for SPARC running Solaris and Intel running Linux.

Examples of CISC instruction set architectures are System / 360 through z / Architecture, PDP-11, VAX, Motorola 68k, and x86.

By the time of cancellation, however, second-generation RISC chips ( such as the newer SPARC architecture ), were offering much better price / performance ratios than the VAX lineup.

GDB target processors ( as of 2003 ) include: Alpha, ARM, AVR, H8 / 300, System / 370, System 390, X86 and its 64-bit extension X86-64, IA-64 " Itanium ", Motorola 68000, MIPS, PA-RISC, PowerPC, SuperH, SPARC, and VAX.

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.

Used in various publishing environments, it was also offered with DECset, Digital's VAX / VMS 3. x native mode OEM version of the Datalogics Pager automated batch composition engine.

* DEC PDP-6 Time-sharing Monitor -> TOPS-10 -> TSS-8, RSTS-11, RSX-11 -> VAX / VMS

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

VAX / VMS uses the number of 100ns since November 17, 1858 and RISC OS the number of centiseconds since January 1, 1900.

The Star and Starlet projects culminated in the development of the VAX-11 / 780 superminicomputer and the VAX / VMS operating system, respectively.

POP-11 was at first implemented on a DEC PDP-11 computer in 1976, and was ported to VAX / VMS in 1980.

Although the first commercial sales were for VAX / VMS, from the mid-1980s the main Poplog development work was done on Sun SPARC computers running Solaris, although several different versions were sold, including versions for HP-UX and a 64-bit version of Poplog for DEC Alpha running Digital UNIX.

PRISM was intended to be a flexible design, supporting both Unix-like applications, as well as Digital's existing VMS programs from the VAX after minor conversion.

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.

While the first such systems were purchased from DEC, when DEC abandoned the PDP-10 architecture in favor of the VAX, CompuServe and other PDP-10 customers began purchasing plug compatible computers from Systems Concepts.

The 32-bit VAX series was descended from it, and early VAX models had a PDP-11 compatibility mode.

It was cross-developed from a VAX to an RTX2000 Forth system connected to dual-ported RAM accessible to the microcontroller.

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.

The first native VAX UNIX product from DEC was Ultrix-32, based on 4. 2BSD with some non-kernel features from System V, and was released in June 1984.

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

MicroStation Version 1, which allowed users to download files directly from their VAX system to their PC to view and plot them ( a very primitive Bentley View ), was introduced to the market in 1986.

* DEC achieved similar success with its translation tools to help users migrate from the CISC VAX architecture to the Alpha RISC architecture.

Some of the first computers that might be called " personal " were early minicomputers such as the LINC and PDP-8, and later on VAX and larger minicomputers from Digital Equipment Corporation ( DEC ), Data General, Prime Computer, and others.

Beginning in 1980, ZOG was ported from DEC VAX version ( written in an experimental language called " L *") to the Pascal-based Three Rivers PERQ workstation and was used for a shipwide local area network on the American aircraft carrier USS Carl Vinson.

By contrast, competing proprietary computing architectures from the early 1980s such as Digital's VAX, Wang VS and Hewlett Packard's HP3000 have long been discontinued without a compatible upgrade path.

MIT reluctantly licensed versions of VAX Macsyma from Berkeley to about 50 universities, starting with Caltech, under condition that the licenses would be revoked when negotiations for a proper license were complete.

Despite resistance from many in Symbolics, Macsyma was released for DEC VAX computers and Sun workstations using Berkeley's Franz Lisp in the early to mid 80s.

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 first computer-aided maintenance software came from DEC in the 1980s to configure VAX computers.

IDL originated from early VAX / VMS / Fortran, and its syntax still shows its heritage:

* VAX 8800, by codename, a family of computer systems from Digital Equipment Corporation

And the toolkit itself is environments extended from basic sets of operating system tools, for example, the Unix Programmer's Work Bench and the VMS VAX Set.

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.