||[[VDOS|VDOS]]||1985||[[Vortex|Vortex]]||Provides 0.7 MB on B||1||7 or Lower|| Link Required
|-
||[[XD-DOS|XD-DOS 1.11]]||1987||[[Dobbertin|Dobbertin]]||Provides 0.7 MB formats||1||7 or Lower||Link Required[[Media:Xddos111.zip| XD-DOS 1.11 ROM]]
|-
||[[XD-DOS|XD-DOS 2.10]]||1990||[[Dobbertin|Dobbertin]]||Provides 0.7 MB formats and hard disc support||1||7 or Lower||[[Media:XDDOS210.ROM|XD-DOS 2.10 ROM]]
|-
|'''Alternative OS ROMs'''|||||||||||||