* [[Media:Manual de las Unidades Vortex.pdf|Manual de las Unidades Vortex]] {{ES}} (manual)
* [https://www.cpcwiki.eu/imgs/f/fd/VDOS20X.ROM V-DOS 2.0-X ROM Image]
* [https://nfggames.com/X68000/Documentation/Floppy%20Drives/NEC/NEC%20FD1035%20Floppy.pdf NEC drive inside Vortex M1-X] NEC FD1035 Datasheet (M1-X Floppy Disk Drive)]
=== Variants ===