In the period just before the NCR DMV driver got the modernized floppy driver based on the NEC µPD765, the driver showed the correct screen for "no floppy inserted, sitting here patiently"
It didn't boot, but it showed the correct screen. As I can no longer build the old revisions, I can't provide the revision, when this changed to a blank screen where nothing happens.
The recent change to the 765 code (r30943) provoked a change in the DMV behaviour: Now an error message that is related to the drive/disk configuration shows up.
It would be great if devs could look into this and maybe nudge the DMV along to boot.