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From: jdsb@dslvax.egr.duke.edu (John D. S. Babcock)
Newsgroups: comp.sys.mac.system
Subject: How does it know it's in 32 bit mode?
Message-ID: <1460@cameron.egr.duke.edu>
Date: 17 Jun 91 19:11:50 GMT
Sender: news@egr.duke.edu
Distribution: usa
Organization: Duke University EE Dept.; Durham, NC
Lines: 23

OK quick question for this setup:
Mac IIsi, 5M RAM, Quantum running Silverlining5.31 w/Sys6.0.7 partition and
sys7.0 partition.

I have been using Silverlining 5.27 for about a month, frequently switching
between System 7 and System 6 using the volumes DA.  (I have been running
system 7 in 24 bit mode).  In my excitement at getting Silverlining 5.31, I
tried running System 7.0 in 32 bit mode.  I didn't notice much difference,
but it seemed to work OK.  Next, I use switcher so that the sys7 partition
will not mount and I select the sys6 partition and reboot.  I get a dialog
saying "This system is setup for 32 bit.  Proceed in 24 bit or reboot?"

So, how does it know it is in 32 bit mode?  I thought it had to do with the
system you are running.  Would sys 6 still see the 32 bit mode if I did
a hard reboot (power off, then on.)  Will I have to reset 32 bit mode
every time I use my System 7 partition? (It reverted to 24 bit after I 
selectec proceed in 24 bit mode.)  Thanks for any hints.

P.S. I am making a list of Macintosh cookies (Pictures in ROM, etc.)
     Would anyone like me to post it?
-------------------------------------------------------------------------
J. D. Sterling Babcock             Duke University Electrical Engineering
jdsb@ee.egr.duke.edu or att!egr.duke.edu!jdsb