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    SubjectRe: [PATCH 2.6.19-rc1 update 2] drivers: add LCD support
    Excuse me, also:

    On 10/12/06, Paulo Marques <pmarques@grupopie.com> wrote:
    >
    > Also, what do these "nop"'s do? Isn't there a way to read the "busy"
    > status from the controller and just write as fast as possible?
    >

    I found another bug that "changes" randomly the "startline" value. I
    spent a _lot_ of time checking what would be the smallest way to have
    the work done without any problem.

    If you remove 1 of the 2 nops (after _address()), you will get some
    flickering on one of the controllers, about 15 times per minute. If
    you remove both, the "evil" controller do worse things.

    Really, I have been trying a lot of ways to improve it and find the
    explanation of that weird changes, and the best algorithm I found it
    the one I have sent. Dirty, but it works safely. I also tried with
    different timings and delays, but they didn't work. The only way I
    found is to make the LCD do such "nop" operations.
    -
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