Digital Equipment Corporation should not be confused with the unrelated companies Digital Research, Inc or Western Digital ( despite the latter manufacturing the LSI-11 chipsets used in DEC's low end PDP-11 / 03 computers ).

Digital Research produced a compatible variant known as DR DOS, which was eventually taken over ( after a buyout of Digital Research ) by Novell, then by Caldera.

Gary Arlen Kildall ( May 19, 1942 – July 11, 1994 ) was an American computer scientist and microcomputer entrepreneur who created the CP / M operating system and founded Digital Research, Inc. ( DRI ).

Kildall and his wife Dorothy established a company, originally called " Intergalactic Digital Research " ( later renamed as Digital Research, Inc ), to market CP / M through advertisements in hobbyist magazines.

IBM approached Digital Research in 1980, at Bill Gates ' suggestion, to negotiate the purchase of a forthcoming version of CP / M called CP / M-86 for the IBM PC.

* Digital Research tribute to Dr. Kildall

* Internet archive of defunct Digital Research website

In January 1985, Digital Research previewed the Concurrent DOS 286 operating system made in cooperation with Intel.

This worked on the B-1 prototype step of the chip, but Digital Research discovered problems with the emulation on the production level C-1 step in May, which would not allow Concurrent DOS 286 to run 8086 software in protected mode.

In August, after extensive testing E-1 step samples of the 80286, Digital Research acknowledged that Intel corrected all documented 286 errata, but said there were still undocumented chip performance problems with the prerelease version of Concurrent DOS 286 running on the E-1 step.

Intel said the approach Digital Research wished to take in emulating 8086 software in protected mode differed from the original specifications.

Nevertheless, they implemented minor changes in the microcode that would allow Digital Research to run emulation mode much faster, incorporated into the E-2 step.

* Lyonel Feininger Digital Album The Ohio State University Cartoon Research Library

*" UVM Center for Digital Initiatives: The Maple Research Collection " by the Vermont Agricultural Experiment Station.

Digital publication of the Science Fiction Research Association ( 2001 f .):

Seymour I. Rubinstein was an employee of early microcomputer company IMSAI, where he negotiated software contracts with Digital Research and Microsoft.

Digital ( PCM-based ) PBXs were just starting to come into the marketplace with the Plessey PDX ( a licensed version of the ROLM CBX ) and the GEC SL1 ( a licensed version of the Northern Telecom SL1 ).

MetaComCo's first product was an MBASIC compatible interpreter for IBM PC's, which was licensed by Peter Mackeonis to Digital Research in 1982, and issued as the Digital Research Personal Basic, or PBASIC, running under CP / M.

Other computer languages followed, also licensed by Digital Research and MetaComCo established an office in Pacific Grove, California, to service their USA customers.

Lack of a second source was a major obstacle for this new form factor to gain a foot hold ; JTS licensed the form factor to Western Digital to attempt to remedy this problem.

By comparison, TDMA Cellular ( Digital AMPS ) is licensed in blocks of 30 kHz channels, but each emission occupies 40 kHz, and is capable of serving the same number of subscribers per channel as iDEN.

Amstrad licensed both MS-DOS 3. 2 and Digital Research DOS Plus, which was largely compatible with MS-DOS and included some features from CP / M and the ability to read CP / M disks.

* The Edge Digital, a station playing a music format based on Katoomba licensed Edge 96. 1.

In January 2007, SOE announced that it has licensed rights from Midway Home Entertainment to develop and release six classic Midway games for PlayStation 3 Digital Download, including Mortal Kombat II, Gauntlet II, Joust, Rampage World Tour, Rampart, and Championship Sprint, which will be available from the PlayStation Store.

It is licensed in Russia by the Russian Organization for Multimedia and Digital Systems, a licence similar to agreements held by Russian radio stations.

Texas Instruments ( TI ) later joined the fray when it licensed the LMI-LAMBDA design and purchased the NUBUS associated assets from Western Digital and still later produced its own variant, the TI Explorer.

In 1998, DeskStation licensed its motherboard designs and chipsets from to Samsung, a DEC ( Digital Equipment Corporation ) Alpha licensee.

Kodak developed Digital ICE at their Austin development centre, and is licensed by Epson, Nikon, Microtek and some others.

Distribution rights to the series are licensed to Gyeonggi Digital Contents Agency ( GDCA ).

Design features of the PDP-11 influenced the design of microprocessors such as the Motorola 68000 ; design features of its operating systems, as well as other operating systems from Digital Equipment, influenced the design of other operating systems such as CP / M and hence also MS-DOS.

CP / M ( Control Program / Monitor ) was a mass-market operating system created for Intel 8080 / 85 based microcomputers by Gary Kildall of Digital Research, Inc.

The only hardware system that CP / M, as sold by Digital Research, would support was the Intel 8080 Development System.

While the Digital Research distributed core of CP / M ( BDOS, CCP, core transient commands ) did not use any of the Z80-specific instructions, many Z80 based systems used Z80 code in the system specific BIOS, and many applications were dedicated to Z80 based CP / M machines.

The established small system operating software was CP / M from Digital Research which was in use both at the hobbyist level and by the more professional of those using microcomputers.

The most important of the early OSes on these machines was Digital Research's CP / M-80 for the 8080 / 8085 / Z-80 CPUs.

* Digital Research CP / M, MP / M, FlexOS, Concurrent CP / M, Concurrent DOS, Multiuser DOS, System Manager, REAL / 32, Personal CP / M, DOS Plus, Novell DOS, PalmDOS, OpenDOS, and DR-DOS

Similar 8. 3 file naming schemes have also existed on earlier CP / M, Atari, and some Data General and Digital Equipment Corporation minicomputer operating systems.

It was originally developed by Gary Kildall's Digital Research and derived from Concurrent PC DOS 6. 0, which was an advanced successor of CP / M-86.

Digital Research's original CP / M for the 8-bit Intel 8080 and Z-80 based systems spawned numerous spin-off versions, most notably CP / M-86 for the Intel 8086 / 8088 family of processors.

IBM originally approached Digital Research, seeking an x86 version of CP / M.

Digital Research threatened legal action, claiming PC DOS / MS-DOS to be too similar to CP / M.

The proportion of PC buyers prepared to spend six times as much to buy CP / M-86 was very small, and the availability of compatible application software, at first decisively in Digital Research's favor, was only temporary.

Digital Research fought a long losing battle to promote CP / M-86 and its multi-tasking multi-user successor Concurrent CP / M-86, and eventually decided that they could not beat the Microsoft-IBM lead in application software availability, so they modified Concurrent CP / M-86 to allow it to run the same applications as MS-DOS and PC DOS.