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What you need to do in order to use high-level AppleTalk routines depends upon
the interfaces you are using. Some differences are outlined below.
[May 01 1987]
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Introduction
MPW before 2.0
When calling the old high-level AppleTalk routines, many programmers get
mysterious "resource not found" errors (-192) from such seemingly harmless
routines as MPPOpen. The resource that is not being found is 'atpl', a
resource that contains all the glue code to the high-level routines. In order
to use the high-level routines, your application must have this resource in its
resource fork. The 'atpl' resource is included in a file called "AppleTalk"
with any compilers that use this outdated version of the AppleTalk interface.
MPW 2.0 and newer
A newer version of the alternate interfaces is available in MPW 2.0; it
includes bug fixes and increased Macintosh II compatibility. With this version
of the interface, the 'atpl' resource is no longer used. Glue code is now
linked into your application.
This will be the final release of the current-style interface. It will be
supported for some time as the alternate interface. We have moved to a
more straightforward and simple preferred interface, which is also
implemented in MPW 2.0 and newer, and is described in the AppleTalk Manager
chapter of Inside Macintosh vol. V. Developers are free to continue to
use the alternate interface, but in the long run it will be advantageous to
move to the preferred interface.
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Third-Party Compilers
Third-party compilers use interfaces that are built from Apple's MPW
interfaces. Some compilers may not have upgraded to the new interfaces yet.
Contact the individual compiler manufacturers for more information.
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References
The AppleTalk Manager
Inside AppleTalk
AppleTalk Manager Update
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Downloadables
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Acrobat version of this Note (32K)
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