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SubjectRe: Of removable devices


Vojtech Pavlik wrote:
>
> On Fri, Feb 18, 2000 at 02:48:16PM +0100, David Balazic wrote:
>
> > > > At the same time - the fix is hardware, the PC isnt fixable for this the
> > > > CD-ROM drives are. The 2.2.x supermount stuff does that bit right
> > >
> > > Exactly. As far as there are no automatic gear for floppies you can not
> > > avoid manual unmount if you want reliable work.
> >
> > But you CAN ,as at least AmigaOS proves.
> >
> > If you didn't understand it at first, I'll repeat it :
> > IT CAN BE DONE !!!!!!
>
> Yes, but AmigaOS didn't do it on PC hardware. They did use the same
> floppies PC does, but a different controller. PC floppy controller
> updates the disk change flag only after stepping the head. If you don't
> want to step the head constantly (and also spin the motor all the time),
> you can't check for floppy insertion/removal easily.

You just described how amiga-floppies work !
Ten bonus points for you :-)
Except they didn't have to turn the motor on.

And I'll repeat this question again :
Whose idea was to require a head-step for the update ?

--
David Balazic

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