From: Joshua Jore (
Date: Fri May 04 2001 - 11:19:58 EDT

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    This *should* only add support. If I were to do this now, I'd detect the
    chip rev and branch accordingly. That would only apply the additional IO
    to chips that require the extra setup. The next step would be to try to
    do the initialization IO only once, then just do the connect/disconnect
    as needed.

    In any case, being an Imation geek, I only had Imation hardware to test
    with. I had positive results using a c8 and c6 chip. I've got a tape
    backup that also uses epat but i've been pokey about trying it out with
    that. In short, I haven't heard of of the c7|c8 patch breaking the earlier
    chips. Anyone else who has seen something different should speak up
    because AFAIK, it works fine.

    Also, it's probably preferrable to keep it an option (default to no) for
    the standard epat given the IO penalty. There's no reason to turn it on
    unless it's actually needed.

    Josh Jore

    On Thu, 3 May 2001, Tim Waugh wrote:

    > On Fri, Apr 27, 2001 at 09:53:32AM -0500, Joshua Jore wrote:
    > > You may want to try applying the patch at
    > > It adds support for the c7/c8 revs of
    > > the epat chip at a slight IO penalty.
    > Incidentally, the reason this isn't in the mainstream kernel yet is
    > that I was unable to convince myself that the added c7/c8
    > functionality was in addition to the pre-existing protocol stuff,
    > rather than just being a toggle between the two types.
    > In other words, if you enable C7/C8 support, do you lose any support
    > or just gain support?
    > Tim.
    > */

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