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Re: Disk-drive clicking
#13
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Quote:

Ogun wrote:
There are two bootloader arguments for the floppy driver in aros that one can add on the grub commandline.
One is the "nofdc" setting, which completely disables the driver.
The other is "noclick" which disables the floppy change detection thusly also removing the clicking sound.

The actual reason behind the clicks are interesting. The floppy drive itself detects floppy removals/insertions, but it will for some reason only tell the floppy controller that a disk is present whenever the head of the floppy drive changes track. So in order to poll if a disk is present or not you need to move the head producing the click sound.

On Amiga hardware you still have to step the head to detect changes, but someone figured out that if I place the head on cylinder 0 and try to step to cylinder -1, the drive will just ignore the command but still update the disk change stuff. In that way the noclick patches were invented.

However, the PC floppy controller tries to be smart and will not actually allow me to do this. Hence the "noclick" option in grub will also disable floppy change detection so one needs to run diskchange df0: manually instead. Sad but true.

Regards,
Johan (Marginally insane from working with the PC floppy controller)


I ran into that when I was working on FUSION PC (the Mac emulator) back in the late 90's. We never did see an FDC for the PC that allowed you to step in from track 0. Therefore, no NOCLICK for the PC. However, people did like the diskchange sensing... they'd never seen that before on the PC.

Yes, the PC FDCs were enough to make you go postal.

Posted on: 2004/4/5 23:36
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Re: Disk-drive clicking
#12
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AROS has a diskchange command? Or were you speaking hypothetically?

Thanks for the info!

Posted on: 2004/4/5 10:45
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Re: Disk-drive clicking
#11
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There are two bootloader arguments for the floppy driver in aros that one can add on the grub commandline.
One is the "nofdc" setting, which completely disables the driver.
The other is "noclick" which disables the floppy change detection thusly also removing the clicking sound.

The actual reason behind the clicks are interesting. The floppy drive itself detects floppy removals/insertions, but it will for some reason only tell the floppy controller that a disk is present whenever the head of the floppy drive changes track. So in order to poll if a disk is present or not you need to move the head producing the click sound.

On Amiga hardware you still have to step the head to detect changes, but someone figured out that if I place the head on cylinder 0 and try to step to cylinder -1, the drive will just ignore the command but still update the disk change stuff. In that way the noclick patches were invented.

However, the PC floppy controller tries to be smart and will not actually allow me to do this. Hence the "noclick" option in grub will also disable floppy change detection so one needs to run diskchange df0: manually instead. Sad but true.

Regards,
Johan (Marginally insane from working with the PC floppy controller)

Posted on: 2004/4/5 10:15
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Re: Disk-drive clicking
#10
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Quote:
I think the drives in Commodore's machines had a nicer sonic resonance. PC drives clicking just sound nasty


Then you havent heard the loader in Powermonger on amiga

Posted on: 2004/4/5 5:34
If you need music for your projects, or are in the need of a sound studio engineer, feel free to contact me ......
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Re: Disk-drive clicking
#9
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Quote:

Argo wrote:
ah, ha! Thanks.
But then you don't get that true Amiga experience...


I think the drives in Commodore's machines had a nicer sonic resonance. PC drives clicking just sound nasty

Posted on: 2004/4/4 20:55
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Re: Disk-drive clicking
#8
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Cheers guys, that's sorted now

(Hmm, all these emoticons and no :python:)

Posted on: 2004/4/4 20:53
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Anonymous
Re: Disk-drive clicking
#7
I had an anti-click on my Amiga too.

True Amiga experience would be to have the "ring des nibelungens" at boot.

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Anonymous
Re: Disk-drive clicking
#6
ah, ha! Thanks.
But then you don't get that true Amiga experience...

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Anonymous
Re: Disk-drive clicking
#5
If you want to stop the drive clicking, there IS a solution!
Pass "nofdc" to grub before booting.
(press "e" on the modeline to edit, then "b" to boot)

Knowing that, there is NO floppy drive anymore.

If you agree with this setting, add it to grub, editing the file: sys:boot/grub/menu.lst (save it ).


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Re: Disk-drive clicking
#4
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Quote:

Goatboy wrote:
Quote:
bloodline wrote:
-Edit- My Girlfriend suggest you just put a blank disk in the drive.. now why didn't you think of that, eh?


I have, but then at the next boot, it's all "Non system disk" this and "press any key" and "forgive me this" and "I'm not worthy..."






You are soooo lazy... yeah, I know... me too

Posted on: 2004/4/4 20:21
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