Service manual

Table 4–11 (Cont.): <REFERENCE>(XRP) Internal Processor Reg-
isters
Register Mnemonic Address Type Class
Reserved IPR123 2
Vector Interface Error Status VINTSR IPR123 R/W 2
Primary Cache Tag Store PCTAG IPR124 R/W 2
Primary Cache Index PCIDX IPR125 R/W 2
Primary Cache Error Address PCERR IPR126 R/W 2
Primary Cache Status PCSTS IPR127 R/W 2 I
Reserved IPR128–IPR143 3
Vector Processor Status VPSR IPR144 R/W 6
Vector Arithmetic Exception VAER IPR145 R 6
Vector Memory Activity Check VMAC IPR146 R 6
Vector Translation Buffer
Invalidate All
VTBIA IPR147 W 6
Reserved IPR148–IPR156 5
Vector Indirect Register Address VIADR IPR157 R/W 6
Vector Indirect Data Low VIDLO IPR158 R/W 6
Vector Indirect Data High VIDHI IPR159 R/W 6
The IPRs are explicitly accessible to software only by the Move To Processor
Register (MTPR) and Move From Processor Register (MFPR) instructions,
which require kernel mode privileges. From the console, EXAMINE/I and
DEPOSIT/I commands read and write the IPRs.
<REFERENCE>(XRP) Scalar Processor 4–63