12th Generation Intel® Core™ Processors Datasheet Volume 2 of 2
Base Address Register1 (BAR1) – Offset 18
Base Address Register1 accesses to PCI configuration space and is always 4K type in [2:1] and memory space indicator in [0]
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
31:12 | 0x0 | RW | Base Address (BASEADDR1) Base Address1 This field is present if BAR1 is enabled through private configuration space. |
11:4 | 0x0 | RO | Size Indicator (SIZEINDICATOR1) Always is 0 as minimum size is 4K |
3 | 0x0 | RO | Prefetchable Memory (PREFETCHABLE1) 0: BAR memory is not prefetchable |
2:1 | 0x2 | RO | Memory Type (TYPE1) If BAR_64b_EN is 0 then 00b indicates BAR lies in 32 bit address range. |
0 | 0x0 | RO | Message Space (MESSAGE_SPACE1) Memory Space Indicator: 0 Indicates this BAR is present in the memory space |