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From: tre@sdcarl.UUCP
Newsgroups: net.micro.68k
Subject: 68k asswmbler question
Message-ID: <316@sdcarl.UUCP>
Date: Mon, 12-May-86 18:12:35 EDT
Article-I.D.: sdcarl.316
Posted: Mon May 12 18:12:35 1986
Date-Received: Wed, 14-May-86 21:50:33 EDT
Organization: Computer Audio Research Lab, UCSD, San Diego, Calif.
Lines: 21

I am using a 68000 based SBC for the VMEbus to debug prototype hardware for 
this bus.  To debug the interrupting capablilities of my hardware, I need
to stop the 68000 and wait for an interrupt (level=4).

This works:
0010AC		MOVE 	#2300,SR
0010B0		JMP	$10B0

This doesn't:
0010AC		STOP #2300

Now according to my book, STOP stops the 68k from fetching and executing 
instructions, until an exception comes along.  If an interrupt request occurs, 
with a high enough level, an interrupt exception occurs.

So, as far I can tell, both examples of code should have the same result.
What am I doing wrong??

-- 
	thomas r. erbe
	{ucbvax,ihnp4,akgua,hplabs,sdcsvax}!sdcarl!tre