RE: [PARPORT] Problems with EPP mode....

From: Mark Cianfaglione (
Date: Mon Mar 19 2001 - 16:30:47 EST

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    I wish it was the easy way (datasheet) but alas Horatio I'm a bugger for
    punishment. (i.e. Reverse Engineering)


    -----Original Message-----
    From: Tim Waugh []
    Sent: Monday, March 19, 2001 2:35 PM
    To: Cianfaglione, Mark [SKY:EQ10:EXCH]
    Subject: Re: [PARPORT] Problems with EPP mode....

    On Mon, Mar 19, 2001 at 11:31:08AM -0500, Mark Cianfaglione wrote:

    > I'm not sure if it's just outright rejecting the mode or the
    > negotiation is breaking down. I will have to turn on the debugging
    > in the ieee_1284.c to get a better view of this. The device is a
    > Logitech Quickcam VC. The USB version is working (partly) but I'm
    > wrestling with the parport version (add Three Stooges sound effects
    > here)...

    Okay. Tell me, do you happen to have a datasheet for this device, or
    is this work based on reverse engineering? I have a strong suspicion
    that it has peculiar timing requirements.

    If you can figure out which IEEE 1284 event isn't happening, that
    would be a good next step.


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