Path: utzoo!attcan!uunet!know!samsung!rex!uflorida!mailer.cc.fsu.edu!sun13!prism!jkg
From: jkg@prism.gatech.EDU (Jim Greenlee)
Newsgroups: comp.sys.m68k
Subject: Re: Interpretation of 68000 Function Code Outputs
Message-ID: <14594@hydra.gatech.EDU>
Date: 5 Oct 90 13:26:40 GMT
References: <1057@tharr.UUCP>
Organization: Georgia Institute of Technology
Lines: 19

In article <1057@tharr.UUCP> chris@tharr.UUCP (Chris Allen) writes:
>Can anyone explain the interpretation of the function code
>outputs on the 68000 (FC0-FC2). [...]
>What is the difference between program and data? 

This is kind of picky, but nobody else has mentioned it so far. The first
fetch (on RESET) of the initial Supervisor Stack Pointer and Program Counter
values are considered to be from the Supervisor Program Space (all other
exception vectors are fetched from Supervisor Data Space).

All fetches for which the PC is the address source are considered to be from
the Program Space, but the converse is not necessarily true.

						Jim Greenlee
-- 
Jim Greenlee - Instructor, School of ICS, Georgia Tech     jkg@cc.gatech.edu

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