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From: fadden@uts.amdahl.com (Andy McFadden)
Newsgroups: comp.sys.apple2
Subject: HardPressed + GWIII
Message-ID: <3eSN03kkd6ze00@amdahl.uts.amdahl.com>
Date: 11 Jul 93 00:25:45 GMT
Organization: Amdahl Corporation, Sunnyvale CA
Lines: 17

Don't try to read compressed files or files in marked folders into
GraphicWriter III with HardPressed running.

Turns out that (stupid stupid stupid) I was clearing or setting the N
flag instead of the Z flag when returning from a GS/OS call.  This caused
GW III to think a SET_MARK call had failed, which it handled by repeating
the series of GS/OS calls until something overflowed and it crashed.

Enterprising folks can dig through the binary (about $800 bytes in) and
change the offending SEP #$80 / REP #$80 to $02.  This is so silly I'll
probably write a patch program and u/l it; keep an eye out.

I'm fairly amazed that nothing else choked and died, actually.

-- 
fadden@uts.amdahl.com (Andy McFadden)
[ Above opinions are mine, Amdahl has nothing to do with them, etc, etc. ]