Changes
/* M1 */
* '''M1-X''' which can be updated with a [[RS232]] interface.
On the M1-S/D Controllers the Disc operation system VDOS 1.0 on ROM was included. On the M1-X/XRS Controllers the Disc operation system [[VDOS]] 2.0 on ROM was included.
== The Vortex disc drive controller ==
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