Technical data

Central Processor Unit, Continued
Internal
Processor
Registers
The internal processor registers (IPRs) that are implemented by
the KA49 CPU chip, and those that are required of the system
environment, are logically divided into five groups, as follows:
Normal—Those IPRs that address individual registers in the
KA49 CPU chip or system environment
Bcache Tag IPRs—The read-write block of IPRs that allow
direct access to the Bcache tags
Bcache Deallocate IPRs—The write-only block of IPRs by
which a Bcache block may be deallocated
Pcache Tag IPRs—The read-write block of IPRs that allow
direct access to the Pcache tags
Pcache Data Parity IPRs—The read-write block of IPRs that
allow direct access to the Pcache data parity bits
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