Re: [PARPORT] pcd trouble w/ Backpack and Toshiba

From: Dr. Dave Williams P.E. (
Date: Mon Dec 15 2003 - 15:42:32 EST

  • Next message: AL Crowley: "Re: [PARPORT] pcd trouble w/ Backpack and Toshiba"


    Thanks very much for your assistance.

    The drive does read CD-RW discs just fine (including that Debian disc)
    under Windows (95 and 2000) using standard drivers. I was actually
    surprised (and quite pleased) to see that and have never had any
    trouble at all with CD-RW discs under Windows. FIWI, the CMOS
    setting I'm using under Linux is identical to the one I use under Windows.

    Is it even necessary to have a disc in the drive when pcd is loaded? I have
    tried both commercial CD-ROM and CD-RW discs with equal results. In
    my quest, I've seen dmesg samples posted which seem to indicate that
    the drive itself responds to pcd with some return data, such as:

    > pcd0: Sharing parport0 at 0x378
    > pcd0: BACKPACK Protocol Driver V2.0.2ac
    > pcd0: Copyright 2001 by Micro Solutions, Inc., DeKalb IL.
    > pcd0: BACKPACK 2.0.2ac, Micro Solutions BACKPACK Drive at 0x378
    > pcd0: Unit: 45 Mode:1 (8-bit) Delay 0
    > pcd0: identify completion: alt=0x88 stat=0x88 err=0x188 loop=160001
    > phase=136
    > pcd0: Request sense before command: alt=0x88 stat=0x88 err=0x188
    > loop=160001 phase=136

    I don't get any of this. All I get is "adapter not found", "autoprobe
    failed", or
    "no CD-ROM drive found". I get the same results whether the drive is
    or not, so it seems to me like pcd isn't seeing the drive at all. I
    never get to the
    point where the drive will mount to read the disc, although I have tried.

    Since my last post, I got a hold of setid.exe and confirmed that the
    unit ID is
    indeed 33 as it's supposed to be based on the serial number. I was
    that this might have been changed way back when, but now I know we're using
    the correct value.

    Any further suggestions or ideas would be much appreciated. I suppose I
    could live with Windows on this machine, but I'd really rather not have to.

    Thanks again.


    AL Crowley wrote:

    > What type of media do you have in the Backpack? If you downloaded
    > Debian and burnt it to CDRW media, that older drive will not read
    > CDRW's. I would also verify that you can read from that Debian CD in
    > the Backpack under Windows.
    > At 05:34 AM 12/14/2003, you wrote:
    >> Greetings:
    >> I'm struggling with a particularly obstinate system:
    >> 1) Toshiba T2150 Satellite notebook (port at 0x378 is
    >> running in standard bi-directional mode since the only
    >> other choice is ECP).
    >> 2) Backpack CD-ROM, model 164700 (quad speed), which works
    >> under Windoze 95 (the only other OS that'll run on this
    >> little beast due to CPU and memory - 28 MB - limitations).
    >> 3) Debian 3.0r1, install CD ready to go (if I could read
    >> it) since network is not yet available to the machine.
    >> Attempting a fresh install from floppies, all goes well
    >> until I try to recognize the CD-ROM drive. I load modules
    >> until I have the following according to lsmod:
    >> parport
    >> parport_pc
    >> paride
    >> bpck
    >> and then pcd will not load on matter what I've tried.
    >> I've gone through all of the parameter possibilities I
    >> can think of, centered about the ones that seem most
    >> correct:
    >> insmod pcd drive0=0x378,0,33
    >> (33 = last two digits of the drive's serial number)
    >> Every time, module installation fails and dmesg shows
    >> "adapter not found", "autoprobe failed", or "no CD-ROM
    >> drive found". Everything from no parameters, to specifying
    >> all 6 manually, to different unit numbers, to specifying
    >> no unit number, etc. all lead nowhere.
    >> Any assistance or suggestions would be gratefully
    >> appreciated. Thanks in advance.
    >> =Dave
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    > Thank You,
    > Al Crowley, Technical Support Assistant Manager
    > Micro Solutions
    > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    > website:
    > e-mail:
    > fax: 815.756.4986
    > tech phone: 815.754.4500 (M-F 8-5 CT)

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