Oric problem identified: Floppy motor is never turned on.
This used to work because the floppy motor was hacked to always turn on on any command, but this was removed. Reading the schematics shows that the floppy motor on signal is connected to the HLD (head load) signal of the FD1973. This signal is not emulated properly yet, therefore there is no easy fix. I may take a look at emulating this output tonight.
