Myarc Disk Operating System

MDOS

Developer	Myarc, Paul Charlton, MDOS Buyout Group
Working state	Current versions 6.70 & 6.71
Source model	Open source
Initial release	1987; 37 years ago (1987)
Marketing target	Home computer
Kernel type	Monolithic kernel
Default user interface	MDOS CLI
License	Public domain

MDOS (short for Myarc Disk Operating System) is an

GUI

, and complex mathematical applications.

In 1993, Beery Miller the publisher of 9640 News, organized a group of Geneve 9640 owners and was able to purchase all rights to the source code for MDOS, Advanced Basic, the PSYSTEM runtime module, and the GPL Interpreter from Myarc and Paul Charlton.

Over the years, MDOS has been updated by individuals including T. Tesch, Clint Pulley, Alan Beard, John Johnson, James Schroeder, Mike Maksimik, James Uzzell, Tony Knerr, Beery Miller, and others. Support adding

access and nearly unlimited high speed hard-drive like file access.

A small but active base of users still exist on www.Atariage.com as of 2021 where T. Tesch, Beery Miller, and others provide support.

MDOS was written specifically for the

video display processor.

All source code for the Geneve 9640 is in the public domain.

External links

• Myarc Geneve 9640 Family Computer
• Myarc Geneve 9640 Software
• 9640News Software
• Geneve 9640 – a close look at the system board and sales flyer
• Geneve 9640 at the Home Computer Museum
• Geneve items @ Richard Bell's Company
• Photo of Geneve 9640 booting – HD-based vertical PEB system belonging to Gregory McGill
• Photo of Geneve showing swan image – from Mainbyte
• 1988 Dallas TI Fair – mixed Geneve 9640 and TI-99/4A photos
• Geneve 9640 – at old-computers.com
• Heatwave BBS – Telnet BBS operating on a Myarc Geneve 9640 under MDOS.