Service manual

Table 3–10 (Cont.): <REFERENCE>(xyp) Internal Processor Reg-

isters

System Base Register SBR IPR12 R/W 1

System Length Register SLR IPR13 R/W 1

Reserved IPR14–IPR15 3

Process Control Block Base PCBB IPR16 R/W 1

System Control Block Base SCBB IPR17 R/W 1

Interrupt Priority Level IPL IPR18 R/W 1 I

AST Level ASTLVL IPR19 R/W 1 I

Software Interrupt Request SIRR IPR20 W 1

Software Interrupt Summary SISR IPR21 R/W 1 I

Reserved IPR22–IPR23 3

Interval Clock Control/Status ICCS IPR24 R/W 2 I

Next Interval Count NICR IPR25 W 3

Interval Count ICR IPR26 R 3

Time-of-Year Clock TODR IPR27 R/W 1

Console Storage Receiver Status CSRS IPR28 R/W 5 I

Console Storage Receiver Data CSRD IPR29 R 5 I

Console Storage Transmitter Status CSTS IPR30 R/W 5 I

Console Storage Transmitter Data CSTD IPR31 W 5 I

Console Receiver Control/Status RXCS IPR32 R/W 2 I

Console Receiver Data Buffer RXDB IPR33 R 2 I

Console Transmit Control/Status TXCS IPR34 W 2 I

Console Transmit Data Buffer TXDB IPR35 W 2 I

Translation Buffer Disable TBDR IPR36 R/W 3

Cache Disable CADR IPR37 R/W 2 I

Machine Check Error Summary MCESR IPR38 R/W 3

Memory System Error MSER IPR39 R/W 2 I

Reserved IPR40–IPR41 3

<REFERENCE>(xyp) Scalar Processor 3–55