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/* X-Drives (720K) */
These are the latest drives from Vortex for use with a CPC 464 with DDI-1 or a CPC 664/6128 (ie. on systems that already have a floppy disc controller); no additional controller was required anymore. Instead, a ROM module was supplied together with the drive, which provided VDOS 2.0-X. Only single-drive variants were available. The |S command (for accessing a third drive) is no longer used, the new |X command allows to swap drive A and B (same as [[X-DDOS]] from Dobbertin).
=== F1-X and F1-XRS (5,25") ===
The F1-X model is based on a single BASF 6139 type 5,25" disk drive. These are compatible with the BASF 6138 disk drives used in the previous 5,25" models, but have a slightly more compact design and a number of design flaws that affected durability were corrected. The F1-XRS variant is equipped with an additional RS232-C interface.
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=== M1-X and M1-XRS (3,5") ===
The M1-X model is based on a single NEC FD1035 type 3,5" disk drive. The M1-XRS variant is equipped with an additional RS232-C interface.
