Intel® Core™ Ultra Processors for H-series and U-series Platforms CFG and MEM Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 795258 | 07/29/2024 | Public |
Revision Identification and Class Code register (RID2_CC_0_2_0_PCI) – Offset 8
This register contains the revision number. This register also contains the Base Class Code and the function sub-class in relation to the Base Class Code.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:24 | 3h | RO | Base Class Code (BCC) This is an 8-bit value that indicates the base class code. This code has the value 03h, indicating a Display Controller. |
| 23:16 | 0h | RO/V | Sub-Class Code (SUBCC) The value is based on GTTMMADR Baroffset 0x10100Ch bit 9 (Display_Present).When GU_CNTL_PROTECTED[Display_present] = Display exists, this value is 00h, indicating VGA compatible controller.When GU_CNTL_PROTECTED[Display_present] = No display exists, this value is 80h, indicating other display device. |
| 15:8 | 0h | RO | Programming Interface (PI) When MGGC0[VAMEN] is 0 this value is 00h, indicating a Display Controller. |
| 7:0 | 0h | RW/V | Revision ID (RID) Revision ID of the device |