> That' funny. I took an _IDENTICAL_ approach for my
> project that required OS 9 and OS X drivers, i.e a
> Carbon app that talks to either an OS 9 or OS X shim
> through the same interface, which in turn talk to
> either an OS 9 or OS X driver. The downside here is
> that there isn't a standard way to locate a user-land
> driver. The key point is in your statement "Our apps
> know where to look".
>
The key difference for me was that, for OS X, the shim was the driver.
Touche on the magic shim location.
> I don't think it's really fair to compare OS X
> user-land drivers to classic drivers because they are
> really two different operating systems.
True, but the same USB capability was, in some ways, easier to implement
on X. (In other ways - documentation - I/O completion rules, it was
harder.)
> It's interesting that different
> developers are rolling their own nearly-identical
> solutions to the same problems...
True of sooooo much in Carbon development.
Kind of like the early days of Mac development. Apple provided standard
ways of doing certain things *after* everyone had already rolled their
own.
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