[ale] USB CompactFlash Readers on Linux

[Denny Chambers]

All of the sites that I have seen so far give the same desription:

The cards are designed with flash technology, a non-volatile storage
solution that does not lose its information when the power is turned
off. 

CompactFlash cards contain no moving parts and are noiseless,
considerably lighter, faster, consume less battery power and are much
more rugged than a rotating disk drive.

The Compact Flash Association will let you download the spec in exchange
for your personal information.
 
http://www.compactflash.org/specdl1.htm


"Cox, Daniel" wrote:
> 
> On Fri, 2002-01-18 at 16:00, Geoffrey wrote:
> >
> >
> > Denny Chambers wrote:
> >
> > > I ordered the SDDR-31. $15.74 at www.pagecomputers.com.
> > >
> > > So it mounts as a scsi device, that is kind of strange.
> >
> >
> > Stranger still, my Sony camcorder's memory stick mounts as a scsi
> > device.  So here I am with my Sony camcorder hooked up via usb and I'm
> > trying to let my mom view some images.  My mom says she doesn't see
> > anything, I check it out, mumbled something like, 'oh, I need to mount
> > my camcorder.'  I hear, "WHAT??" from the other end of the phone...
> 
>         From long ago:
> 
>                 Female Student: "My program is locked up!"
>                 Male Tech: "Okay, let me do a ps on your tty..."
> 
>         Using the standard pronunciations.  Sorry if it offends, it wasn't
> intentional at the time, and isn't intentional now, except for the humor
> aspect.
> 
>         On a serious note, so that I can justify the bandwidth: I'm currently
> trying to get the SmartMedia driver (SDDR-09) to write to my SM cards.
> Many of the commands it uses are very SCSI-like.  Apparently, the
> designer of the protocol was intimatly familiar with the SCSI standard,
> and imitated it.  The READ_10 and WRITE_10 are identical, for instance.
> FYI, SmartMedia is really just Flash wearing party duds ;-).  That's why
> most of these devices mount as SCSI.  Most SCSI commands are implemented
> directly, no interpretation required.
> 
>         Actually, while I'm on the subject: how does Flash work?  I know that
> static RAM is an array of flip-flops, and dynamic RAM is closer to a
> capacitor, hence the need to keep it refreshed, but I have no idea how
> Flash flashes, and remains so.
> 
> --
> kernel, n.: A part of an operating system that preserves the
> medieval traditions of sorcery and black art.
> 
> Danny

-- 
Denny Chambers
Quantum Corporation, Inc.
Network Attached Storage Division
Java Linux Engineer
Phone: 251-478-5730
Cell: 251-605-3446
IM: bugfixer at jabber.org

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