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From: dillon@CORY.BERKELEY.EDU (Matt Dillon)
Newsgroups: comp.sys.amiga
Subject: Re: May one AllocMem during a SoftInt?
Message-ID: <8709130200.AA05176@cory.Berkeley.EDU>
Date: Sat, 12-Sep-87 22:00:30 EDT
Article-I.D.: cory.8709130200.AA05176
Posted: Sat Sep 12 22:00:30 1987
Date-Received: Sun, 13-Sep-87 10:45:57 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
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	You can do anything within a Software Interrupt as long as it doesn't
confuse what is running normally.  For example, if you are in the middle of 
a graphics library call, get a software interrupt, and your software
interrupt makes another graphics call (both calls locking layers), your 
machine freezes.

	Along the same lines it probably isn't a good idea to call AllocMem()
from a software interrupt if THAT PARTICULAR TASK is already in the middle 
of an AllocMem().

	A Software interrupt is simply a context within the task... other
tasks still run.

	Needless to say, you cannot call AllocMem() from a hardware interrupt.

						-Matt