35-294 Vol. 3C

MODEL-SPECIFIC REGISTERS (MSRS)

3A9H

937

MSR_DAC_ESCR1

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3AAH

938

MSR_MOB_ESCR0

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3ABH

939

MSR_MOB_ESCR1

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3ACH

940

MSR_PMH_ESCR0

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3ADH

941

MSR_PMH_ESCR1

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3AEH

942

MSR_SAAT_ESCR0

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3AFH

943

MSR_SAAT_ESCR1

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3B0H

944

MSR_U2L_ESCR0

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3B1H

945

MSR_U2L_ESCR1

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3B2H

946

MSR_BPU_ESCR0

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3B3H

947

MSR_BPU_ESCR1

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3B4H

948

MSR_IS_ESCR0

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3B5H

949

MSR_IS_ESCR1

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3B6H

950

MSR_ITLB_ESCR0

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3B7H

951

MSR_ITLB_ESCR1

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3B8H

952

MSR_CRU_ESCR0

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3B9H

953

MSR_CRU_ESCR1

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

3BAH

954

MSR_IQ_ESCR0

0, 1, 2

Shared

See Section 18.12.1, “ESCR MSRs.”
This MSR is not available on later processors. It is 

only available on processor family 0FH, models 

01H-02H.

3BBH

955

MSR_IQ_ESCR1

0, 1, 2

Shared

See Section 18.12.1, “ESCR MSRs.”
This MSR is not available on later processors. It is 

only available on processor family 0FH, models 

01H-02H.

3BCH

956

MSR_RAT_ESCR0

0, 1, 2, 3, 

4, 6

Shared

See Section 18.12.1, “ESCR MSRs.”

Table 35-41.  MSRs in the Pentium® 4 and Intel® Xeon® Processors  (Contd.)

Register 

Address

Register Name

Fields and Flags

Model 

Avail-

ability

Shared/

Unique

1

Bit Description

 Hex

Dec