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From: pl@news.funet.fi.tut.fi (Lehtinen Pertti)
Newsgroups: comp.sys.m68k
Subject: Re: Interpretation of 68000 Function Code Outputs
Message-ID: <1990Oct3.110208.5911@funet.fi>
Date: 3 Oct 90 11:02:08 GMT
References: <1057@tharr.UUCP>
Sender: news@funet.fi (#News )
Organization: Finnish University and Research Network FUNET
Lines: 35


From article <1057@tharr.UUCP>, by chris@tharr.UUCP (Chris Allen):
> 
> Can anyone explain the interpretation of the function code
> outputs on the 68000 (FC0-FC2). The manual says that they can
> represent
> 
> User Program
> User Data
> Supervisor Program
> Supervisor Data
> [.. some others which are not important]
> 
> What is the difference between program and data? 
> 
> ... from the point of view of both the processor and the user.
> 

	My intuition says, that all those accesses, which use PC as
	their base, are program accesses, and all other are data
	accesses.

	This means that:

		- opcode fetches
		- pc relative accesses

		go to program space

	All other go to data space.

--
pl@tut.fi				! All opinions expressed above are
Pertti Lehtinen				! purely offending and in subject
Tampere University of Technology	! to change without any further
Software Systems Laboratory		! notice