Vortex provided [[Vortex Disc Drives#Downloads|a patched version of CP/M 2.2 ]] together with their [[Vortex Disc Drives|F1/M1 disc drives]]. After a legal dispute with [[Digital Research]], Vortex switched to only provide patches for CP/M 2.2 to enable using their [[Vortex Expansion RAM card|memory expansions]] and [[Vortex Disc Drives|floppy disc drives]].
== Patch for CP/M 2.2 to enable Vortex RAM Expansion ==