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From: hp48sx@wuarchive.wustl.edu (HP48SX Archive Maintainer)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Connectix MODE32
Keywords: 32 Bits ROMs 'Dirty' More Stuff
Message-ID: <1991May27.173452.2860@wuarchive.wustl.edu>
Date: 27 May 91 17:34:52 GMT
References: <33042@usc> <1991May21.215839.20198@umbc3.umbc.edu> <1991May23.192221.21509@odgate.odesta.com>
Organization: Washington University in Saint Louis, MO
Lines: 30

In article <1991May23.192221.21509@odgate.odesta.com> mike@odgate.odesta.com (Mike J. Kelly) writes:
>>It'd be nice if we had a hardware solution, but at least this may be a 
>>solution. I still agree with every argument that has gone down the pike about
>>this problem, but this may be the best we get. Will this always work? Who
>>knows? Is it a slower solution? Maybe. Why should we pay for this fix? I
B
>>wish we didn't have to, but it seems to me there have been lots of inits
>>that were designed to fix problems, like HeapTool. Just now they're making us
>>pay to fix them.
>
>I don't mind paying (new ROMS won't be free).  What worries me is how
>Connectix does it (and I haven't heard anything but generalities here).
>My uniformed guess is that they simply replace the dirty ROM code with
>RAM-based versions.  That makes me nervous because at least ROM-based
>code can't be overwritten or destroyed.  If this is in fact what
>Connectix is doing (and I repeat: I don't really know), I believe having
>key system routines in unprotected RAM would make the Mac even more of 
>an unstable development platform than it already is.  
>-- 
>--
>Mike Kelly               Odesta Corporation, Northbrook, Illinois, USA
>...!clout!odgate!mike    - Until odesta.com is registered.
>odgate!mike@clout.uucp   - From the Internet.

If MODE32 uses the PMMU, then it can write-protect its own code, and
thus still have a safe life.
-- 
*******************************************************
Povl H. Pedersen             hp48sx@wuarchive.wustl.edu
HP48sx archive maintainer