Toshiba TMPR4937 Manual page 46

Handling reserved regions
Operation is undefined when a register defined in this document as a reserved region (Reserved) is
accessed. If there is a bit or field that was defined as Reserved in a register, write the expressed default value
or the specified value ("0" if no particular value is expressed) to these bits. Also, do not use any value read
from this bit/field.
Diagnostic function
Any function described as a "diagnostic function" is used to facilitate operation evaluations. The operation
of such functions is not guaranteed.
References
64-bit TX System RISC TX49/H2, TX49/H3, TX49/H4 Core Architecture
(http://www.semicon.toshiba.co.jp/eng/index.html)
MIPS RISC Architecture, Gerry Kane and Joe Heinrich (ISBN 0-13-590472-2)
See MIPS Run, Dominic Sweetman (ISBN 1-55860-410-3)
MIPS Publications (http://www.mips.com/publications/)
PCI Local Bus Specification Revision 2.2 (http://www.pcisig.com/)
PCI Bus Power Management Interface Specification Revision 1.1
Audio CODEC '97 (AC '97) Revision 2.1 (http://developer.intel.com/ial/scalableplatforms/audio/)
Conventions in this Manual
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