PPC Privileged mode

Steven Bytnar s-bytnar at uiuc.edu
Sat Feb 20 13:17:41 EST 1999

How do I exit cleanly from PPC supervisor mode to MacOS? I am trying 
to work with the code in BootX, but it was meant to execute the 
kernel and never return. My purpose is only to read and write to 
supervisor read/writable registers on the chip without destroying 

Thank you,

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