Date: Mon, 31 Dec 2001 11:37:27 -0800 (PST) From: "Duane H. Hesser" <dhh@androcles.com> To: "Lawrence S. Lansing" <lansil@rpi.edu> Cc: stable@FreeBSD.ORG, Doug White <dwhite@resnet.uoregon.edu> Subject: Re: Problem with compact flash reader under -stable Message-ID: <200112311937.fBVJbRD89308@androcles.com> In-Reply-To: <Pine.A41.3.96.1011231022906.20638A-100000@vcmr-19.rcs.rpi.edu>
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On 31-Dec-01 Lawrence S. Lansing wrote:
>> Are you sure it's generating a FAT filesystem on the card? From the looks
>> of things, it isn't....
>
> Since "dd if=/dev/rda0" failed without actually reading any blocks
> (details of this noted in my last e-mail), I'm inclined to think that the
> filesystem/partition on the disk shouldn't be the source of my trouble.
> To avoid putting my foot in my mouth on a mailing list, I double-checked
> under windows. It's "FAT", according to win2k.
>
Relevant standards:
DCF - Design rule for Camera File System
http://www.pima.net/standards/it10/PIMA15740/dcf.htm
USB Still Image Capture Device Definition
http://www.usb.org/developers/data/devclass/usb_still_img10.pdf
It appears to me, though, that the USB spec merely gives vendors a target
to avoid. Apparently, they interpret it as "Unspecified Serial Bus", since
they all seem to go their own way. I have a Microtech Zio flash card reader
which is too large for a keychain holder and too small for a paperweight.
It is recognized by the "ugen" driver as "SHUTTLE SCM Micro USBAT-02" and
usbdevs -v reveals its ID as 04e6:1010, so I know it's there (but then, I
knew that, as it was me that plugged it in :=).
The Linux folks seem to spend a lot of time playing with (or looking for)
specialized drivers for USB devices; you may be able to get some clues at
http://www.qbik.ch/usb/devices/showdev.php?id=536
> For what it's worth, win2k didn't require any special drivers, or
> anything--it seems to be generic umass. This is probably the only time
> I've ever literally been able to "plug and play" under windows, too. :)
> I'm thoroughly stumped as to why FreeBSD is having a hard time with it.
>
>
> -Larry Lansing
> RPI Class of 2003
>
>
>
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--------------
Duane H. Hesser
dhh@androcles.com
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