Re: ioctl for HW compression on Sony DDS?

Ralf Baechle (ralf@uni-koblenz.de)
Wed, 13 Oct 1999 14:20:55 +0200

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On Mon, Oct 11, 1999 at 01:11:11PM -0400, Michael K. Johnson wrote:

> Some sony DDS drives (mine, for example) do not allow you to turn off
> compression. FWIW...

There is a number of drives (dunno if Sony's are among them) which allow
setting of the compression by jumpers or dip switches to:

- always off, software cannot change compression setting.
- software selectable, default off after powerup.
- software selectable, default on after powerup.
- always on, software cannot change compression setting.

Ralf

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