Re: [hatari-devel] floppy media change on TT

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 31/05/2019 à 09:34, Toni Wilen a écrit :
> > > BTW when value is 7f (after ejecting/inserting a disk), if you unselect
> > > the drive, you read 6f and if you select it again it's back to 7f ?
> >
> > This is the case for my drive. No amount of deselecting and selecting 
> > will reset the disk changed status, only a step pulse will.
>
> AFAIK this is standard shugart interface floppy drive behavior. Amiga 
> drives have exact same behavior, only step resets disk change signal and 
> drive output signals are driven only when drive is selected. (Allows 
> multiple connected drives without extra circuitry)
>
> Stepping towards track "-1" also works, most drives refuse to physically 
> step but will still reset disk change signal, some very old drives try 
> to physically step and hit the track zero stop.. (in Amigas only A1000s 
> had that kind of drive).

hi

thanks to both of you for these extra precisions, I will add the 
necessary code.