12th Generation Intel® Core™ Processors Datasheet Volume 2 of 2
ID | Date | Version | Classification |
---|---|---|---|
767625 | 07/13/2023 | Public |
Graphics Memory Range Address (GMADR0_0_2_0_PCI) – Offset 18
GMADR is the PCI aperture used by S/W to access tiled GFX surfaces in a linear fashion.
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
31 | 0x0 | RW/V/L | 4096MB Address Mask (ADMSK4096) This bit is either part of the Memory Base Address (R/W) or part of Address Mask (RO) depending on the value of MSAC.APSZ.RO and forced to 0 when MSAC.APSZ >= 4096MB. (i.e. MSAC.APSZ[4]=1) |
30 | 0x0 | RW/V/L | 2048MB Address Mask (ADMSK2048) This bit is either part of the Memory Base Address (R/W) or part of the Address Mask (RO) depending on the value of MSAC.APSZ.RO and forced to 0 when MSAC.APSZ >= 2048MB. (i.e. MSAC.APSZ[3]=1) |
29 | 0x0 | RW/V/L | 1024MB Address Mask (ADMSK1024) This bit is either part of the Memory Base Address (R/W) or part of the Address Mask (RO) depending on the value of MSAC.APSZ.RO and forced to 0 when MSAC.APSZ >= 1024MB. (i.e. MSAC.APSZ[2]=1) |
28 | 0x0 | RW/V/L | 512MB Address Mask (ADMSK512) This bit is either part of the Memory Base Address (R/W) or part of the Address Mask (RO) depending on the value of MSAC.APSZ.RO and forced to 0 when MSAC.APSZ >= 512MB. (i.e. MSAC.APSZ[1]=1) |
27 | 0x0 | RW/V/L | 256MB Address Mask (ADMSK256) This bit is either part of the Memory Base Address (R/W) or part of the Address Mask (RO) depending on the value of MSAC.APSZ.RO and forced to 0 when MSAC.APSZ >= 256MB. (i.e. MSAC.APSZ[0]=1) |
26:4 | 0x0 | RO | Address Mask (ADM) Hardwired to 0s to indicate at least 128MB address range. |
3 | 0x1 | RO | Prefetchable Memory (PREFMEM) Hardwired to 1 to enable prefetching. |
2:1 | 0x2 | RO | Memory Type (MEMTYP) Hardwired to 2h to indicate 64 bit base address. |
0 | 0x0 | RO | Memory I/O Space (MIOS) Hardwired to 0 to indicate memory space. |