The Myarc Disk Operating System, usually shortened to MDOS, is an operating system commercialized by Myarc and written specifically for the Geneve 9640 computer by Paul Charlton. It was designed to emulate the Texas Instruments TI-99/4A fully while adding what was then an advanced virtual memory environment with support for a mouse, a graphical interface and demanding mathematical programs. It was written for the TMS9995 16-bit processor and the Yamaha V9938 video display processor. In 1993 Beery Miller, publisher of 9640 News, organized a group of Geneve owners who bought the rights to the source code for MDOS, Advanced Basic, the PSYSTEM runtime module and the GPL interpreter from Myarc and Charlton. Several individuals have updated MDOS since, adding SCSI, IDE and larger RAM disks, and a small group of users remained active in 2021. All source code for the Geneve 9640 is in the public domain.
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Source Myarc Disk Operating System (Wikipedia)
Licensed Under
Source Myarc Disk Operating System (Wikipedia)
Sources
1. Myarc Disk Operating System (Wikipedia)
Body, user base paragraph
A small but active base of users still exist
In Group: Home Computer Operating Systems, Lead paragraph
It was designed and implemented specifically for the Geneve 9640
Licensed Under: Public-Domain Software, Body, final paragraph
All source code for the Geneve 9640 is in the public domain.
In Field: Operating Systems, Lead sentence
is an operating system commercialized by Myarc
View the Source2. Ninerpedia: Geneve 9640 (Ninerpedia)
NinerpediaOpening paragraphQuote, Opening paragraph
In 1987, Myarc - already known in the TI community for several peripheral expansion cards - launched the Geneve 9640
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