Path: utzoo!attcan!uunet!lll-winken!ames!apple!han
From: han@Apple.COM (Byron Han, wyl E. coyote )
Newsgroups: comp.sys.mac.programmer
Subject: Re: Patching a trap address
Message-ID: <31812@apple.Apple.COM>
Date: 27 May 89 17:05:05 GMT
References: <5563@hubcap.clemson.edu> <23164@dhw68k.cts.com> <31640@apple.Apple.COM> <22635@srcsip.UUCP>
Organization: Apple R&D - Networking & Communications
Lines: 26

article <22635@srcsip.UUCP> mnkonar@src.honeywell.com (Murat N. Konar) writes:
>In article <31640@apple.Apple.COM> han@Apple.COM (Byron Han, wyl E. coyote ) writes:
>(stuff about using GetTrapAddress and SetTrapAddress to patch traps deleted)
>>Actually NGetTrapAddress and NSetTrapAddress defined in IM-IV are the
>>recommended calls.
>
>What is the difference?  Is there some advantage to using NGet/SetTrapAddress?
>Or is it to ensure future compatibility?

GetTrapAddress and SetTrapAddress were used with the old 64K ROM's.  The new
routines NGetTrapAddress and NSetTrapAddress allow developers to specify
whether or not they are mucking with OS or Toolbox traps.

You do need to make sure that you are running with 128K ROM's or later.  See
Inside Macintosh Volume IV (233-234)
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