Re: [PARPORT] forcing EPP Mode on SMC 37N869

From: Gunther Mayer (
Date: Tue Oct 24 2000 - 14:47:34 EDT

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    Sven Geggus wrote:
    > Hi there,
    > is it possible to force an SMC37N869 Controller to EPP Mode using direct
    > register access?
    > Looks like my bios does not support the ECP&EPP Mode which is set using
    > CR04 on system Reset.

    Did you reprogram CR04 to the desired mode?

    The patch (see below) for 2.3.99 tries to identify some chips
    and a user expanded this and reported success on identifying
    and reprogramming his ISA chip on a parallel port PCI card (that
    included some custom PCI-ISA bridge of course),

    Please note that EPP detection by the parport code in linux is
    not fail proof (and cannot be by EPP hardware design)!


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