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pcjs/devices/pc/machine/5160/cga/640kb/dos400m
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Repository files (latest commit first)
Filename Latest commit message Latest commit date
Jeff Parsons a309d1f302 Followup to previous delta: removed obsolete "class" attribute from all controls
2014-11-15 18:47:39 -08:00
..
machine.xml Followup to previous delta: removed obsolete "class" attribute from all controls 2014-11-15 18:47:39 -08:00
README.md Collapsed /configs into /devices (or in some cases, /apps or /disks), simplifying the structure a bit 2014-11-03 00:11:41 -08:00

README.md

"Multitasking" MS-DOS 4.00

This simulation demonstrates the first unearthed copy of Microsoft's "multitasking" version of MS-DOS. The original images were released on jsmachines.net in March, 2013, and have since been copied to other web sites. This version of MS-DOS was never officially released in North America. More information is available at Wikipedia and OS/2 Museum.

Note: The designation "4.0M" is not an official version number; it's an internal version number used only to differentiate these disk images from those of the official MS-DOS 4.00, released in June, 1988.

The PCjs machine configuration below boots MS-DOS 4.0M. To access the MS-DOS "Session Manager" after it's booted, tap the Alt key.

IBM Model 5160