[Info-vax] USB based serial ports, was: Re: Useless Serial Bus

[Jose Baars]

On Nov 1, 9:58 am, Simon Clubley <clubley at remove_me.eisner.decus.org-
Earth.UFP> wrote:
> On 2011-10-31, Jose Baars <peutba... at googlemail.com> wrote:
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> > On Oct 31, 11:49 pm, Simon Clubley <clubley at remove_me.eisner.decus.org-
> > Earth.UFP> wrote:
> >> On 2011-10-29, JF Mezei <jfmezei.spam... at vaxination.ca> wrote:
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> >> That should be "brain dead under Windows". All the reports I've seen say
> >> that the Linux USB CDC driver works just fine.
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> > You might be right, but from where I am looking at least the FTDI
> > drivers have been
> > incorporated in the Linux kernel.  Also the driver is GPL'ed and
> > downloadable from
> > the FTDI website. Some or part of these drivers have been reverse
> > engineered from the
> > Windows dll provided bij FTDI, though.
> > Why the drivers would work better under Linux than under Windows, or
> > OS/X, seems
> > unlikely to be caused by the drivers.
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> I think there may be some misunderstanding about what I (and JF) were saying.
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> The USB specification includes a Communications Device Class (or CDC)
> specification for connecting serial type devices.
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O, ok, now I see.
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> BTW, knowledge gained from looking at the driver source is quite fragile as
> it only tells you how something works under one specific set of circumstances.
> It does not tell you _why_ something is done in that way and what additional
> steps may be required of something changes. For that, you need a full
> specification.

Yes, obviously.