Multiuser DOS (English Wikipedia)

Costello, John (1997-09-17). "DataPac sale expected to benefit channel". Australian Reseller News. Archived from the original on 2017-01-20. Retrieved 2015-07-28.

bidmeadia.blogspot.com (Global: low place; English: low place)

Bidmead, Christopher H. (2006-05-09) [1985-03-25]. "Surviving Big Blue". Doctor Who. Which Computer?. Archived from the original on 2020-01-07. Retrieved 2020-01-07. […] Paul Bailey of Digital Research keenly promotes this approach; it is his company that is supplying ICL and others with Concurrent Dos-286. This chameleon operating system allows ICL and other 80286 manufacturers to build machines that will be able to cope with all the existing body of IBM-PC software – and at the same time promise multi-tasking, windowing and true concurrency, three features that together allow a single micro to do several things at once. […] Although no firm announcements have been made, it seems certain that by the end of the year ACT will be offering a Concurrent CP/M 286 machine to fuel its drive into the corporate market. But by this time it will have to contend with IBM's own 80286 office micro, the PC/AT. […] IBM also have a software product in the offing that could pull the rug out from under the Concurrent contenders. Some 180K in size, TopView is a program for IBM PC's and AT's that beefs up the operating system to provide windowing facilities for existing 'well behaved' standard packages. […]

bitsavers.org (Global: 3,844^th place; English: 1,960^th place)

FlexOS Supplement for Intel iAPX 286-based Computers (PDF). 1.3 (1 ed.). Digital Research, Inc. November 1986. Archived from the original (PDF) on 2019-04-21. Retrieved 2018-08-14.
High C Programmer's Guide – Version 1.2 for Concurrent DOS (PDF) (1 ed.). Santa Cruz, CA, USA: MetaWare Incorporated. 1986 [1985-09-15]. Retrieved 2018-08-14. […] This is a guide to the operation of the High C compiler as implemented for the Concurrent DOS 286 1.2 or later operating system – hereafter abbreviated to just "Concurrent" per Digital Research custom – running on the Intel 80286 microprocessor and using the Intel Object-Module Format (OMF). The compiler generates code for any of the Intel 8086/88/186/188/286 family of microprocessors. […]
"Concurrent DOS – Powerful Multiuser Multitasking Operating Systems" (PDF). Digital Research. 1988. Retrieved 2018-10-16.

books.google.com (Global: 3^rd place; English: 3^rd place)

Scott, Karyl (1991-07-29). "Novell/DRI merger to reap better client management". InfoWorld. Networking. Vol. 13, no. 30. InfoWorld Publishing Co. p. 33. ISSN 0199-6649. Archived from the original on 2020-02-09. Retrieved 2017-01-21.
Barney, Doug (1994-07-25). "CCI helps users run more DOS apps – Multiuser DOS Lite handles eight NetWare sessions". InfoWorld: 20. Retrieved 2018-08-19.
Pontin, Jason (1995-11-27). "IMS offers Real32 OS for application servers". InfoWorld. Retrieved 2017-01-17.
Gallant, John (1984-01-23). "Digital Research, Monterey ink Unix-centered pact". Computerworld. XVIII (3): 6. Retrieved 2019-02-03.
Swaine, Michael (1982-04-05). "Homebrew Computer Club views Intel's superchip". InfoWorld. 4 (13). Palo Alto, CA, USA: 4. Archived from the original on 2020-01-07. Retrieved 2020-01-07. […] Digital Research is producing an operating system for the 286. MP/M-286 will take advantage of the processor's memory management and protection and virtual memory support. Digital Research is promising "complete" compatibility with its MP/M-86 and CP/M-86 for the 8086 processor. Intel is supplying Digital Research with the hardware to develop and test MP/M-286. […]
Foster, Edward (1985-05-13). "Super DOS awaits new 80286 – Concurrent DOS 286 – delayed until Intel upgrades chip – offers Xenix's power and IBM PC compatibility". InfoWorld. 7 (19). InfoWorld Media Group: 17–18. ISSN 0199-6649.
Foster, Edward (1985-08-26). "Intel shows new 80286 chip – Future of DRI's Concurrent DOS 286 still unclear after processor fixed". InfoWorld. 7 (34). InfoWorld Media Group: 21. ISSN 0199-6649.
Weiss, Jiri (1987-02-16). "DRI To Release Multiuser 80386 Operating System". InfoWorld. 9 (7): 1, 8. Retrieved 2017-01-22.
Fisher, Sharon (1987-10-19). "Compupro's 80286-Based Multiuser Machine Features Parallel Processing". InfoWorld: 19.
Ryan, Alan J. (1987-10-19). "Concurrent DOS 386 fired up". Computerworld. 21 (42): 37, 40. Archived from the original on 2017-01-22. Retrieved 2017-01-22.
"Digital to announce Concurrent DOS 386, Release 3.0 at COMDEX". InfoWorld. 10 (46): 29. 1988-11-14. Archived from the original on 2017-01-22. Retrieved 2017-01-22.
Welch, Mark J. (1986-06-09). "DRI's Latestd Concurrent PC-DOS Touts More Memory". InfoWorld: 20. Retrieved 2018-10-16.
Scannell, Ed (1991-06-03). "386 Multiuser/Multitasking DOS Gets Scripting Language, File Flush". InfoWorld. Retrieved 2017-01-19.
Scannell, Ed (1991-10-07). "Concurrent revs multiuser DOS". InfoWorld: 17. Retrieved 2017-01-19.
Scannell, Ed; Johnston, Stuart J. (1991-03-04). "DRI Adds Multiuser Tools To DRDOS; MS DOS 5.0 Release Slips To June". InfoWorld. 13 (9): 1, 97. Retrieved 2017-01-21.

cbronline.com (Global: low place; English: low place)

CBR, ed. (1987-01-15). "Digital Research launches FlexOS 286 Real-Time Manufacturing Operating System". Computer Business Review. Retrieved 2018-09-15.{{cite journal}}: CS1 maint: deprecated archival service (link)

citrixblogger.org (Global: low place; English: low place)

Duursma, Martin (2006-10-15) [2005]. Muir, Jeff (ed.). "Datapac history (Citrix R&D Australia)". Citrix Blogger. Archived from the original on 2017-01-20. Retrieved 2017-01-19.

computerhistory.org (Global: 2,702^nd place; English: 1,789^th place)

corphist.computerhistory.org

Digital Research (1984): Concurrent CP/M ships early in response to team effort. Digital Dialogue – Employee Newsletter of Digital Research Inc., Volume 3, Number 1, p. 1 ().
Digital Research (1984): PC-Mode bridges CP/M and PC-DOS. Digital Dialogue – Employee Newsletter of Digital Research Inc., Volume 3, Number 1, p. 3 ().
Digital Research: Concurrent CP/M Release 3.1 offers PC-DOS compatibility. Digital Research News – For Digital Research Users Everywhere, Volume 4, No. 1, p. 5, first quarter 1984 (): "Concurrent CP/M Release 3.1 replaces MP/M-86 as Digital Research's multiuser system. Targeted at 16-bit microcomputers, Release 3.1 may also be configured for a single user environment. Kevin Wandryk, product line manager for the new release, said the PC-DOS mode in the new release increases the availability of applications software. End users can choose between products for Concurrent CP/M or PC-DOS. Digital Research will provide a list of those applications from PC-DOS which may be used, Wandryk said. The manufacturer's version was introduced in December at the COMDEX/Fall trade show in Las Vegas and is scheduled to ship in March."
Digital Research: Concurrent DOS bridges PC-DOS, CP/M. Digital Research News – For Digital Research Users Everywhere, Volume 4, No. 2, p. 3, May 1984 (): '"Concurrent DOS Release 3.1 is rapidly gaining momentum and support from a wide range of microcomputer manufacturers," Wandryk said. "Some 60 hardware companies have licensed the product since it was released in early March."'

archive.computerhistory.org

Kildall, Gary Arlen (1982-09-16). "Running 8-bit software on dual-processor computers" (PDF). Electronic Design: 157. Archived (PDF) from the original on 2017-08-19. Retrieved 2017-08-19.
Holsworth, Francis "Frank" R. (2006-02-01). "Video: Frank Holsworth, developer" (interview). Information Technology Corporate Histories Collection. Computer History Museum. CHM Catalog Number 102770341. ITCHP 44403c1a3fd53. Lot Number X7847.2017. Archived from the original on 2019-04-03. Retrieved 2019-04-04.

computerhistory.org

Holsworth, Francis "Frank" R. (2006-02-01). "Video: Frank Holsworth, developer" (interview). Information Technology Corporate Histories Collection. Computer History Museum. CHM Catalog Number 102770341. ITCHP 44403c1a3fd53. Lot Number X7847.2017. Archived from the original on 2019-04-03. Retrieved 2019-04-04.

computerwoche.de (Global: low place; English: low place)

CW (1985-06-21). "Concurrent DOS 4.1 in den USA angekündigt". Computerwoche (in German). Archived from the original on 2017-01-18. Retrieved 2017-01-18.
CW (1991-03-22). "Digital Research präsentiert Multiuser-DOS". Computerwoche (in German). Archived from the original on 2018-08-19. Retrieved 2018-08-19.
"Jetz Zugriff auf Novell-Netze möglich: Digital Research kommt mit der Version 5.1 von Multiuser-DOS".

conctrls.com (Global: low place; English: low place)

"CCI Concurrent DOS Features". Concurrent Controls, Inc. 1998. Archived from the original on 2005-02-17.
"CCI CDOS V3.10 Release 1". Concurrent Controls, Inc. 2003. Archived from the original on 2005-03-13.
"CONCURRENT CONTROLS: The Multi User Company". conctrls.com. Archived from the original on 2001-06-19. Retrieved 2022-01-15.

driverguide.com (Global: low place; English: low place)

contents.driverguide.com

M., R. (1996-07-31). "REAL/32 Upgrade Disk – Version 7.54 – Batch 08-96-01 – SRN0167.WP". R32UP754.ZIP. Archived from the original on 2018-08-26. Retrieved 2017-01-17.

groups.google.com (Global: 2,153^rd place; English: 1,445^th place)

"Question about Concurrent DOS XM 5.2 and CP/M". comp.os.misc. 2001-12-08.

imsltd.com (Global: low place; English: low place)

"IMS REAL/32 7.9 Announcement". Intelligent Micro Software. 1999. Archived from the original on 2017-01-18.
"Real/32 7.93 Enhancements and Bug fixes". Intelligent Micro Software. 2002-11-22. Archived from the original on 2017-01-18. Retrieved 2017-01-17.
"Real/32 7.94 Enhancements and Bug fixes". Intelligent Micro Software. 2003-01-31. Archived from the original on 2017-01-18. Retrieved 2017-01-17.
"IMS PRICE LIST – AUTUMN 2010". Integrated Solutions. August 2010. Archived from the original on 2017-01-18. Retrieved 2017-01-17. (NB. Lists REAL/32 7.95.)

joewein.de (Global: low place; English: low place)

Wein, Josef "Joe" (2002). "Gary Kildall in England". Archived from the original on 2019-04-03. Retrieved 2019-04-03.

lii.com (Global: low place; English: low place)

"REAL/32 products discontinued". Logan Industries, Inc. (LLI). 2002-04-22. Archived from the original on 2003-04-23.
"REAL/32 under new ownership". Logan Industries, Inc. (LLI). 2002-05-22 [2002-05-02]. Archived from the original on 2002-12-03.
"IMS acquired by ITERA". Logan Industries, Inc. (LLI). 2002-05-23. Archived from the original on 2003-04-23.

macgui.com (Global: low place; English: low place)

Knox, James M. (1987-01-31). "CDOS-68K". Newsgroup: mod.computers.68k. Retrieved 2018-09-13.{{cite newsgroup}}: CS1 maint: deprecated archival service (link)

maxframe.com (Global: low place; English: low place)

"REAL/32 7.60 for MaxFrame". MaxFrame. 2001-08-20. Retrieved 2018-09-14.
"REAL/32 7.74 for MaxFrame". MaxFrame. 2001-01-30. Retrieved 2018-09-14.

megalextoria.com (Global: low place; English: low place)

Knox, James M. (1986-06-22). "Re: DRI Concurrent DOS for 68K". Newsgroup: mod.computers.68k. Retrieved 2018-09-13.{{cite newsgroup}}: CS1 maint: deprecated archival service (link)

nexok.co.uk (Global: low place; English: low place)

"Itera Limited". NEXOK. Retrieved 2017-01-18.

oldcomputer.info (Global: low place; English: low place)

LSI Octopus (Hilger Analytical) – MCbx

patents.google.com (Global: 1,154^th place; English: 606^th place)

US patent 5355501, Gross, Roger Alan & Constant, John P., "Idle Detection System", issued 1994-10-11

prnewswire.com (Global: 546^th place; English: 310^th place)

Applica Inc. (1999-11-08). "Reflecting its continuing focus on the Applica PC-sharing software products, Concurrent Controls Inc. today announced a move to Applica Inc". PRNewswire. South San Francisco, CA, USA. Archived from the original on 2016-05-16. Retrieved 2017-01-20.

retro-computing.org (Global: low place; English: low place)

slated.org (Global: low place; English: low place)

antitrust.slated.org

Allchin, Jim (1992-05-27) [1991-07-17]. "Novell/Digital Research reach definitive agreement…" (PDF) (Court document). Plaintiff's exhibit 828, Comes v. Microsoft. Archived (PDF) from the original on 2016-11-19. Retrieved 2017-01-21.

tech-insider.org (Global: low place; English: low place)

"Novell and Digital Research sign definitive merger agreement". Business Wire. 1991-07-17. Archived from the original on 2018-08-18. Retrieved 2017-01-24.
"Concurrent DOS-286 Challenges Unix". BYTE Magazine. 10 (5): 375-377. May 1985. Retrieved 2017-01-23.{{cite journal}}: CS1 maint: deprecated archival service (link)

theage.com.au (Global: 451^st place; English: 240^th place)

Mulcaster, Glenn (2002-10-29). "Citrix leading a silicon charge". Australian Reseller News. Archived from the original on 2017-01-20. Retrieved 2015-07-28.

thefreelibrary.com (Global: 686^th place; English: 383^rd place)

Citrix Systems, Inc. (1997-09-09). "Citrix to Acquire DataPac Australasia; Acquisition to Accelerate Citrix Presence in High-Growth Asia-Pacific Market". Business Wire. Fort Lauderdale, FL, USA. Retrieved 2017-01-20.

uni-stuttgart.de (Global: 8,208^th place; English: 9,065^th place)

bitsavers.informatik.uni-stuttgart.de

"Concurrent CP/M with Windows Operating System – Technical Note for the IBM Personal Computer and Personal Computer XT" (PDF) (1 ed.). Digital Research. February 1984. Archived (PDF) from the original on 2017-01-04. Retrieved 2017-01-04.

web.archive.org (Global: 1^st place; English: 1^st place)

Scott, Karyl (1991-07-29). "Novell/DRI merger to reap better client management". InfoWorld. Networking. Vol. 13, no. 30. InfoWorld Publishing Co. p. 33. ISSN 0199-6649. Archived from the original on 2020-02-09. Retrieved 2017-01-21.
"Novell and Digital Research sign definitive merger agreement". Business Wire. 1991-07-17. Archived from the original on 2018-08-18. Retrieved 2017-01-24.
Allchin, Jim (1992-05-27) [1991-07-17]. "Novell/Digital Research reach definitive agreement…" (PDF) (Court document). Plaintiff's exhibit 828, Comes v. Microsoft. Archived (PDF) from the original on 2016-11-19. Retrieved 2017-01-21.
Kildall, Gary Arlen (1982-09-16). "Running 8-bit software on dual-processor computers" (PDF). Electronic Design: 157. Archived (PDF) from the original on 2017-08-19. Retrieved 2017-08-19.
Wein, Josef "Joe" (2002). "Gary Kildall in England". Archived from the original on 2019-04-03. Retrieved 2019-04-03.
Holsworth, Francis "Frank" R. (2006-02-01). "Video: Frank Holsworth, developer" (interview). Information Technology Corporate Histories Collection. Computer History Museum. CHM Catalog Number 102770341. ITCHP 44403c1a3fd53. Lot Number X7847.2017. Archived from the original on 2019-04-03. Retrieved 2019-04-04.
"Concurrent CP/M with Windows Operating System – Technical Note for the IBM Personal Computer and Personal Computer XT" (PDF) (1 ed.). Digital Research. February 1984. Archived (PDF) from the original on 2017-01-04. Retrieved 2017-01-04.
"1" (PDF). Micro Notes – A Technical Information Quarterly. Vol. 2, no. 1. Pacific Grove, CA, USA: Digital Research, Inc. First Quarter 1984. Archived (PDF) from the original on 2020-02-11. Retrieved 2020-02-11.
"2" (PDF). Micro Notes – Technical information on Digital Research products. Vol. 2, no. 2. Pacific Grove, CA, USA: Digital Research, Inc. May 1984. NWS-106-002. Archived (PDF) from the original on 2020-02-11. Retrieved 2020-02-11.
"3" (PDF). Micro Notes – Technical information on Digital Research products. Vol. 2, no. 3. Pacific Grove, CA, USA: Digital Research, Inc. July 1984. NWS-106-003. Archived (PDF) from the original on 2020-02-11. Retrieved 2020-02-11.
CW (1985-06-21). "Concurrent DOS 4.1 in den USA angekündigt". Computerwoche (in German). Archived from the original on 2017-01-18. Retrieved 2017-01-18.
Swaine, Michael (1982-04-05). "Homebrew Computer Club views Intel's superchip". InfoWorld. 4 (13). Palo Alto, CA, USA: 4. Archived from the original on 2020-01-07. Retrieved 2020-01-07. […] Digital Research is producing an operating system for the 286. MP/M-286 will take advantage of the processor's memory management and protection and virtual memory support. Digital Research is promising "complete" compatibility with its MP/M-86 and CP/M-86 for the 8086 processor. Intel is supplying Digital Research with the hardware to develop and test MP/M-286. […]
Bidmead, Christopher H. (2006-05-09) [1985-03-25]. "Surviving Big Blue". Doctor Who. Which Computer?. Archived from the original on 2020-01-07. Retrieved 2020-01-07. […] Paul Bailey of Digital Research keenly promotes this approach; it is his company that is supplying ICL and others with Concurrent Dos-286. This chameleon operating system allows ICL and other 80286 manufacturers to build machines that will be able to cope with all the existing body of IBM-PC software – and at the same time promise multi-tasking, windowing and true concurrency, three features that together allow a single micro to do several things at once. […] Although no firm announcements have been made, it seems certain that by the end of the year ACT will be offering a Concurrent CP/M 286 machine to fuel its drive into the corporate market. But by this time it will have to contend with IBM's own 80286 office micro, the PC/AT. […] IBM also have a software product in the offing that could pull the rug out from under the Concurrent contenders. Some 180K in size, TopView is a program for IBM PC's and AT's that beefs up the operating system to provide windowing facilities for existing 'well behaved' standard packages. […]
FlexOS Supplement for Intel iAPX 286-based Computers (PDF). 1.3 (1 ed.). Digital Research, Inc. November 1986. Archived from the original (PDF) on 2019-04-21. Retrieved 2018-08-14.
Ryan, Alan J. (1987-10-19). "Concurrent DOS 386 fired up". Computerworld. 21 (42): 37, 40. Archived from the original on 2017-01-22. Retrieved 2017-01-22.
"Digital to announce Concurrent DOS 386, Release 3.0 at COMDEX". InfoWorld. 10 (46): 29. 1988-11-14. Archived from the original on 2017-01-22. Retrieved 2017-01-22.
Schulman, Andrew; Brown, Ralf D.; Maxey, David; Michels, Raymond J.; Kyle, Jim (1994) [November 1993]. Undocumented DOS: A programmer's guide to reserved MS-DOS functions and data structures – expanded to include MS-DOS 6, Novell DOS and Windows 3.1 (2 ed.). Reading, Massachusetts, USA: Addison Wesley. p. 203. ISBN 0-201-63287-X. (xviii+856+vi pages, 3.5"-floppy) Errata:
"CCI Concurrent DOS Features". Concurrent Controls, Inc. 1998. Archived from the original on 2005-02-17.
"CCI CDOS V3.10 Release 1". Concurrent Controls, Inc. 2003. Archived from the original on 2005-03-13.
CW (1991-03-22). "Digital Research präsentiert Multiuser-DOS". Computerwoche (in German). Archived from the original on 2018-08-19. Retrieved 2018-08-19.
"CONCURRENT CONTROLS: The Multi User Company". conctrls.com. Archived from the original on 2001-06-19. Retrieved 2022-01-15.
Duursma, Martin (2006-10-15) [2005]. Muir, Jeff (ed.). "Datapac history (Citrix R&D Australia)". Citrix Blogger. Archived from the original on 2017-01-20. Retrieved 2017-01-19.
Costello, John (1997-09-17). "DataPac sale expected to benefit channel". Australian Reseller News. Archived from the original on 2017-01-20. Retrieved 2015-07-28.
Mulcaster, Glenn (2002-10-29). "Citrix leading a silicon charge". Australian Reseller News. Archived from the original on 2017-01-20. Retrieved 2015-07-28.
Applica Inc. (1999-11-08). "Reflecting its continuing focus on the Applica PC-sharing software products, Concurrent Controls Inc. today announced a move to Applica Inc". PRNewswire. South San Francisco, CA, USA. Archived from the original on 2016-05-16. Retrieved 2017-01-20.
Aplycon Technologies (2002-10-15). "Letter to Applica Distributors, Dealers, Partners and Users". Archived from the original on 2002-11-22.
M., R. (1996-07-31). "REAL/32 Upgrade Disk – Version 7.54 – Batch 08-96-01 – SRN0167.WP". R32UP754.ZIP. Archived from the original on 2018-08-26. Retrieved 2017-01-17.
"IMS REAL/32 7.9 Announcement". Intelligent Micro Software. 1999. Archived from the original on 2017-01-18.
"Real/32 7.93 Enhancements and Bug fixes". Intelligent Micro Software. 2002-11-22. Archived from the original on 2017-01-18. Retrieved 2017-01-17.
"Real/32 7.94 Enhancements and Bug fixes". Intelligent Micro Software. 2003-01-31. Archived from the original on 2017-01-18. Retrieved 2017-01-17.
"IMS PRICE LIST – AUTUMN 2010". Integrated Solutions. August 2010. Archived from the original on 2017-01-18. Retrieved 2017-01-17. (NB. Lists REAL/32 7.95.)
"REAL/32 products discontinued". Logan Industries, Inc. (LLI). 2002-04-22. Archived from the original on 2003-04-23.
"REAL/32 under new ownership". Logan Industries, Inc. (LLI). 2002-05-22 [2002-05-02]. Archived from the original on 2002-12-03.
"IMS acquired by ITERA". Logan Industries, Inc. (LLI). 2002-05-23. Archived from the original on 2003-04-23.
REAL/NG main page (2001) ().
Key features of REAL/NG (2003) (from realng.com 2003).
Probably latest REAL/NG (realng.com 2003).
REAL/NG disappearing from realng.com (realng.com 2005).

worldcat.org (Global: 4^th place; English: 4^th place)

search.worldcat.org

Scott, Karyl (1991-07-29). "Novell/DRI merger to reap better client management". InfoWorld. Networking. Vol. 13, no. 30. InfoWorld Publishing Co. p. 33. ISSN 0199-6649. Archived from the original on 2020-02-09. Retrieved 2017-01-21.
Foster, Edward (1985-05-13). "Super DOS awaits new 80286 – Concurrent DOS 286 – delayed until Intel upgrades chip – offers Xenix's power and IBM PC compatibility". InfoWorld. 7 (19). InfoWorld Media Group: 17–18. ISSN 0199-6649.
Foster, Edward (1985-08-26). "Intel shows new 80286 chip – Future of DRI's Concurrent DOS 286 still unclear after processor fixed". InfoWorld. 7 (34). InfoWorld Media Group: 21. ISSN 0199-6649.
Soya, Alex K. H. (November–December 1987). "Concurrent DOS 386". Micro/Systems Journal. Vol. 3, no. 6. pp. 28–33. ISSN 8750-9482. Retrieved 2025-12-23.

youtube.com (Global: 13^th place; English: 14^th place)

Concurrent DOS demonstration in the episode "Multitasking" of the Computer Chronicles on YouTube

z80.de (Global: low place; English: low place)

cpm.z80.de

"Concurrent DOS 68K 1.2 – Developer Kit for Motorola VME/10 – Disk 1". 1986-08-06 [1986-04-08]. Retrieved 2018-09-13.
"Concurrent DOS 68K 1.2 – Developer Kit for Motorola VME/10 – Disk 2". 1986-08-06 [1986-04-08]. Retrieved 2018-09-13. (NB. This package also includes some header files from Concurrent DOS 286, including STRUCT.H explicitly mentioning LOADALL for "8086 emulation".)
"Concurrent DOS 68K 1.2 – Developer Kit for Motorola VME/10 – Disk 3". 1986-08-06 [1986-04-08]. Retrieved 2018-09-13.

z80cpu.eu (Global: low place; English: low place)

"1" (PDF). Micro Notes – A Technical Information Quarterly. Vol. 2, no. 1. Pacific Grove, CA, USA: Digital Research, Inc. First Quarter 1984. Archived (PDF) from the original on 2020-02-11. Retrieved 2020-02-11.
"2" (PDF). Micro Notes – Technical information on Digital Research products. Vol. 2, no. 2. Pacific Grove, CA, USA: Digital Research, Inc. May 1984. NWS-106-002. Archived (PDF) from the original on 2020-02-11. Retrieved 2020-02-11.
"3" (PDF). Micro Notes – Technical information on Digital Research products. Vol. 2, no. 3. Pacific Grove, CA, USA: Digital Research, Inc. July 1984. NWS-106-003. Archived (PDF) from the original on 2020-02-11. Retrieved 2020-02-11.

Multiuser DOS (English Wikipedia)

applica.com (Global: low place; English: low place)

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arnnet.com.au (Global: low place; English: low place)

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computerhistory.org

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maxframe.com (Global: low place; English: low place)

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nexok.co.uk (Global: low place; English: low place)

oldcomputer.info (Global: low place; English: low place)

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prnewswire.com (Global: 546th place; English: 310th place)

retro-computing.org (Global: low place; English: low place)

slated.org (Global: low place; English: low place)

antitrust.slated.org

tech-insider.org (Global: low place; English: low place)

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thefreelibrary.com (Global: 686th place; English: 383rd place)

uni-stuttgart.de (Global: 8,208th place; English: 9,065th place)

bitsavers.informatik.uni-stuttgart.de

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uni-stuttgart.de (Global: 8,208^th place; English: 9,065^th place)

web.archive.org (Global: 1^st place; English: 1^st place)

worldcat.org (Global: 4^th place; English: 4^th place)

youtube.com (Global: 13^th place; English: 14^th place)