Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ukma!husc6!endor!siegel
From: siegel@endor.harvard.edu (Rich Siegel)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Re: Legal Tail Patches
Message-ID: <1254@husc6.harvard.edu>
Date: 23 Feb 89 12:45:19 GMT
References: <1285@ccnysci.UUCP> <10050076@accuvax.nwu.edu> <19886@santra.UUCP>
Sender: news@husc6.harvard.edu
Reply-To: siegel@endor.UUCP (Rich Siegel)
Organization: Symantec/THINK Technologies, Bedford, MA
Lines: 23

In article <19886@santra.UUCP> jmunkki@kampi.hut.fi.UUCP (Juri Munkki) writes:

>Before patching				After patching
>_______________				______________
>Program calls a trap			Program calls a trap
>Trap dispatcher calls routine		Trap dispatcher calls routine
>Come-from patch does something 		Come-from patch does something
>Come-from patch calls ROM		Come-from patch calls new patch.
>					New patch calls ROM...

	Unless I'm mistaken, Radius pulls a trick like this in their
display INITs. 

		--Rich



Rich Siegel
Staff Software Developer
THINK Technologies Division, Symantec Corp.
Internet: siegel@endor.harvard.edu
UUCP: ..harvard!endor!siegel
Phone: (617) 275-4800 x305