[PARPORT] Re: ECPSW mode error?

From: Tim Waugh (twaugh@redhat.com)
Date: Wed Apr 26 2000 - 07:47:40 EDT

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    On Wed, Apr 26, 2000 at 07:16:12PM +0800, zhu qun ying wrote:

    > /* Event 38: Set nAutoFd low */
    > parport_frob_control (port,
    > [...]
    > I am totally confused by the usage.

    Some of the bits are inverted, which is why the difference. However,
    I can never remember which ones, so there might be some mistakes.

    Perhaps a better way to have done it in the first place would have
    been to make the lowlevel driver take care of that..

    > For the low level frob_control function, the control bits are governed by
    > (old_control & ~mask) ^ value,
    > That should be what you say about the how frob_control() works.

    It is.


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