Specification Sheet

Datasheet, Volume 2 of 2 349
IMGU Registers
11.12 Subsystem Identification (SID)—Offset 2Eh
This value is used to identify a particular subsystem.
Access Method
Default: 0h
11.13 Capabilities Pointer (CAPPOINT)—Offset 34h
CAPPOINT provides the offset that is the pointer to the location of the first device
capability in the capability list.
Access Method
Default: 90h
Type: CFG
(Size: 16 bits)
Offset: [B:0, D:5, F:0] + 2Eh
15 12 8 4 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
SUBID
Bit
Range
Default &
Access
Field Name (ID): Description
15:0
0h
RW_O
SUBID: This field should be programmed during BIOS initialization. After it has been
written once, it becomes read only.
Type: CFG
(Size: 8 bits)
Offset: [B:0, D:5, F:0] + 34h
7 4 0
1 0 0 1 0 0 0 0
CAPPTR
Bit
Range
Default &
Access
Field Name (ID): Description
7:0
90h
RO
CAPPTR: Indicates that the first capability pointer offset is offset 90h (MSI
Capability).