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- Xref: sparky comp.sys.mac.programmer:15005 comp.sys.mac.system:11612
- Newsgroups: comp.sys.mac.programmer,comp.sys.mac.system
- Path: sparky!uunet!gumby!kzoo!k044477
- From: k044477@hobbes.kzoo.edu (Jamie R. McCarthy)
- Subject: Re: Does anyone recognize _Jackson?
- Message-ID: <1992Sep4.161418.17523@hobbes.kzoo.edu>
- Followup-To: comp.sys.mac.system
- Organization: Kalamazoo College
- References: <1992Sep4.133844.20178@dartvax.dartmouth.edu>
- Date: Fri, 4 Sep 1992 16:14:18 GMT
- Lines: 31
-
- Roger.W.Brown@dartmouth.edu (Roger W. Brown) writes:
- >I frequently see this symbol in MacsBug when my Quadra crashes:
- >_Jackson. I haven't looked through the Tech Notes yet.
-
- You won't find it there. :-)
-
- >I wondered if
- >anyone knows what it is. It does something with color icons.
-
- It's an internal trap that QuickDraw uses for doing stuff with memory.
- Those branches to _DisposCIcon+xxxx don't necessarily have anything to
- do with color icons. And if you ever hit the _Debugger trap in there,
- something went wrong _before_ the trap was called. Giving the app more
- memory may or may not fix it; it's worth a try.
-
- And it gets its name from Jackson Pollock, the modern painter whose name
- was given to early versions of Color QuickDraw. (Or is it 32-bit
- QuickDraw? I've never been good at trivia...)
-
- >I just
- >want to know that it isn't a virus, and maybe that it is from an
- >extension that may be causing trouble.
-
- Nope, it's in your machine's ROM. (It's hard to put a virus there.)
-
- Note the followup; hopefully csmp won't start up another flood of
- _Jackson trivia...?
- --
- Jamie McCarthy Internet: k044477@kzoo.edu AppleLink: j.mccarthy
- The essence of OOP: "After some hacking, I finally got the program to
- work, but I'm still not sure why." - David Marcovitz (marcovitz@uiuc.edu)
-