Intel® Core™ Ultra 200S and 200HX Series Processors SOC I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 834819 | 01/29/2025 | 001 | Public |
32-bit Base Address Register1 (BAR1) – Offset 18
Base Address Register1
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:12 | 0h | RW | BAR1 (BASEADDR1) Software programs this register with the base address of the device's memory region |
| 11:4 | 0h | RO | Size Indicator (SIZEINDICATOR1) Hardwired to 0 to indicate 4KB of memory space |
| 3 | 0h | RO | Prefetchable (PREFETCHABLE1) A device can mark a range as prefetchable if there are no side effects on reads, the device returns all bytes on reads regardless of the byte enables. |
| 2:1 | 2h | RO | Type (TYPE1) Hardwired to 10 to indicate that Base register is 64 bits wide and mapping can be done anywhere in the 64-bit Memory Space. |
| 0 | 0h | RO | Memory Space Indicator (MESSAGE_SPACE1) Hardwired to 0 to identify a Memory BAR. |