Concurrent DOS XM 6.x

System

Concurrent DOS XM 6.x

Originally an optional module for Concurrent CP/M-86 3.1, this version of Digital Research's CP/M provided basic compatibility with PC-DOS in 1983. Simple DOS applications that did not require hardware access can be ran on this. A stripped down single tasking version was released as DOS Plus and later DR-DOS.

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Lollipop

Works in VMware and maybe VirtualBox.

Lollipop

6.01 does not like VirtualBox. 6.21 may, I have not tested, but I bet it will not work.