Re: [PARPORT] nFault interrupts in ECP mode

From: Gunther Mayer (
Date: Thu May 24 2001 - 04:13:22 EDT

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    Alan Folsom wrote:
    > I hope someone can help with this...
    > I have a device driver written to communicate bidirectionally to a custom
    > scanner. On one linux box (redhat 7.0) this works fine, on the other
    > (identical operating system), the driver never receives an interrupt when
    > nFault goes low attempting to initiate a reverse transfer. I've checked /proc
    > and ioports, interrupts, etc are all the same. /etc/modules.conf are
    > identical, kernel is identical, everything, as near as I can tell.

    The parallel port chipset is probably different ?
    As a starting point you could try to identify the chipset
    ( can help),
    then work on with the datasheets.

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