Service manual

Table 3–10 (Cont.): <REFERENCE>(xyp) Internal Processor Reg-
isters
Register Mnemonic Address Type Class
Console Saved PC SAVPC IPR42 R 2
Console Saved PSL SAVPSL IPR43 R 2
Reserved IPR44–IPR47 3
SBI Fault/Status SBIFS IPR48 R/W 3
SBI Silo SBIS IPR49 R 3
SBI Silo Comparator SBISC IPR50 R/W 3
SBI Maintenance SBIMT IPR51 R/W 3
SBI Error SBIER IPR52 R/W 3
SBI Timeout Address SBITA IPR53 R 3
SBI Quadword Clear SBIQC IPR54 W 3
I/O Bus Reset IORESET IPR55 W 2
Memory Management Enable MAPEN IPR56 R/W 1
Translation Buffer Invalidate
All
TBIA IPR57 W 1
Translation Buffer Invalidate
Single
TBIS IPR58 W 1
Translation Buffer Data TBDATA IPR59 R/W 3
Microprogam Break MBRK IPR60 R/W 3
Performance Monitor Enable PMR IPR61 R/W 3
System Identification SID IPR62 R 1
Translation Buffer Check TBCHK IPR63 W 1
Reserved IPR64–IPR127 4
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.
3–56 VAX 6000 Models 300 and 400 Service Manual