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Author Topic: amiga in idl making floppy noise  (Read 3218 times)

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Offline Chain

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Re: amiga in idl making floppy noise
« Reply #14 from previous page: March 05, 2007, 07:22:44 AM »
Ive tried four utilities i think, and its still the same, only louser clicking. It must be some problem with old floppy drives in A2000 (they are manufactured by Panasonic iirc)
too lazy to use shift key properly...
 

Offline Jope

Re: amiga in idl making floppy noise
« Reply #15 on: March 05, 2007, 07:59:20 AM »
If setting the noclick flag makes your drive louder, don't use it. It might cause your drive to go off alignment.

The Amiga clicks the drives, because otherwise the diskchange line's state is unknown. You must step the drive somewhere, then the DC status is reset and you can read it.

Normally the Amiga steps in the first time and then out and repeat.

After setting the noclick flag (present in the trackdisk.device of ks 3.0 and better), the drive starts stepping out only. The drive should refuse to step further than track 0, thus giving you silence.

Some drives don't implement this and will happily hammer the heads against the end stopper.. This will cause the track 0 position to drift and you'll end up with an unreliable drive that writes broken disks.
 

Offline reddwarfer

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Re: amiga in idl making floppy noise
« Reply #16 on: March 05, 2007, 10:56:17 AM »
I see what your saying Jope, but if the drive head movement is required for the DiskChange signal, now does the line reset?
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Offline Jope

Re: amiga in idl making floppy noise
« Reply #17 on: March 05, 2007, 11:19:40 AM »
Head movement is not required, but a step! :-)

It doesn't matter whether it actually moves anything, but the step signal needs to be pulsed.