12th Generation Intel® Core™ Processor Datasheet Volume 2 of 2
ID | Date | Version | Classification |
---|---|---|---|
767626 | 07/13/2023 | Public |
MTRR Default Type Register (MTRRDEFAULT_0_0_0_VTDBAR) – Offset 108
Register for enabling/configuring Memory Type Range Registers. This register is treated as RsvdZ by implementations reporting Memory Type Support (MTS) as not supported in the Extended Capability register.
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
63:12 | 0h | RO | Reserved |
11 | 0x0 | RO | MTRR Enable (E) 0: Disable MTRRs; UC memory type is applied. FE field has no effect. |
10 | 0x0 | RO | Fixed Range MTRR Enable (FE) 0: Disable fixed range MTRRs. |
9:8 | 0h | RO | Reserved |
7:0 | 0x0 | RO | Default Memory Type (MEMTYPE) Indicates default memory type used for physical memory address ranges that do not have a memory type specified for them by an MTRR. Legal values for this field are 0,1,4, 5 and 6. |