* the 765 only does standard track formats (preamble, marks and data fields), while the 179x will write anything you tell it in the write track (formatting a track) mode.
Some other computers adopted 3inch floppy disks like Amstrad, but used different FDC chips:
* [[Oric-1/Atmos|Oric]] uses the WD1773 (Jasmin) or WD1793 (Microdisc) FDC chip
* [[Tatung Einstein]] uses the WD1770 FDC chip