Subject: Re: SSFDC/SmartMedia Reader question
To: Wolfgang Rupprecht <email@example.com>
From: David Brownlee <abs@NetBSD.ORG>
Date: 09/19/2000 10:08:24
Is there a PR open on this?
-- www.netbsd.org: A pmap for every occasion --
On 15 Sep 2000, Wolfgang Rupprecht wrote:
> firstname.lastname@example.org (Ernst du Toit) writes:
> > Are there any supported SmartMedia (aka SSFDC) readers? I'm
> > particularly interested in anything USB based, but any device might
> > be worth considering.
> I have the Newmedia pcmcia reader. This can download my 4 meg cards
> in ~3 seconds.
> The Newmedia does have a significant bug under netbsd (including
> -current) though. It hangs the kernel for ~40 seconds whenever the
> reader in first plugged in. It is a bit of a drag to have your
> portable freeze up and go into high-battery usage mode for 40 seconds
> (especially when away from wall-power). The battery doesn't last that
> long as it and having your computer go into a spin-wait warming up the
> CPU just adds insult to injury.
> The Bug? The kernel does a spin-wait for a status bit in the wdc
> controller code that takes 40 seconds to come valid. (Ideally the
> kernel would really stop spin-waiting after a few milliseconds.)
> Wolfgang Rupprecht <email@example.com>
> Coming soon: GPS mapping tools for Open Systems. http://www.gnomad-mapping.com/