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[REBOL] Re: On mutability and sameness

From: chris:starforge:demon at: 13-Jun-2001 15:38

Joel Neely wrote:
> "Referrable" "Non-referrable" > > Immutable ROM data, output CPU status data (hardware > registers of ID on some CPUs), overflow > some memory-mapped bits, etc. > controllers
I'd disagree with the overflow bits etc - on some CPUs (certainly ARM, I think PPC) it is possible to not only directly view the status registers but to alter the state of the bits they contain under program control (not as side-effects of other instructions, but directly). Just playing devil's advocate ;))) Chris