These are the newest drives from Vortex, for use on CPC 664/6128 or CPC 464 with DDI-1 (ie. on computers that already have a FDC). The |S command (for accessing a third drive) is no longer used, the new |X command allows to swap drive A and B.
== Vortex Add-ons ==
* Vortex X modul (adding RS232 support to -X drives)
* VDOS2.0 (upgrading older drives to VDOS 2.0)
== I/O Ports ==