PPC Privileged mode

Nathan Hurst njh at drongo.anu.edu.au
Sun Feb 21 10:48:54 EST 1999

On Fri, 19 Feb 1999, Steven Bytnar wrote:

> 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 
> MacOS.

Can't you either just set the CPU back to user mode, or return from


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