Path: utzoo!mnetor!uunet!husc6!bloom-beacon!oberon!sdcrdcf!hplabs!decwrl!labrea!agate!web3d.berkeley.edu!laba-4an
From: laba-4an@web3d.berkeley.edu (Andy McFadden)
Newsgroups: comp.sys.apple
Subject: Re:  text files in prosel
Message-ID: <8541@agate.BERKELEY.EDU>
Date: 10 Apr 88 03:24:54 GMT
References: <8804071428.aa09386@SMOKE.BRL.ARPA> <8705@reed.UUCP>
Sender: usenet@agate.BERKELEY.EDU
Reply-To: laba-4an@web3d.berkeley.edu.UUCP (Andy McFadden)
Organization: University of California, Berkeley
Lines: 30
Summary: more on sys files

In article <8705@reed.UUCP> kamath@reed.UUCP (Sean Kamath) writes:
>In article <8804071428.aa09386@SMOKE.BRL.ARPA> JDA@NIHCU.BITNET (Doug Ashbrook) writes:
>>> me with.  Is there any way to change a BIN file into a SYS file?  Specifically
>
>Well, i don't know about that program, but here's what you have to worry
>about:
>
>SYS files are supposed to load in at $200, and relocate if necessary.
>SYS files are *supposed* to exit via a prodos quit call
>
[stuff deleted]
>Sean Kamath

Other things to worry about:

First of all, it's $2000 (should be rather obvious :-)).

SYS files are supposed to clear the system bitmap so that everything works
properly.  The idea is that a SYS file can be executed regardless of the state
of machine.  This means that you should also reset the text screen (40/80 cols,
mode, etc) and make sure that, in general, everything is wonderful.

If you're not sure what to do, take a look at the start of the ProDOS quit
code ($d100-$d?00).

Hope this helps...

-- 
"You're in good hands with tribbles."
			- Not-so-serious starfleet commander