Graphics, Video, and Display (D2:F0)
9.4.20
9.4.21
9.4.22
MSI_CAPID—MSI Capability Register
Register Address:
Default Value:
90h
05h
Attribute:
Size:
RO
8 bits
Default
Bit
and
Description
Access
05h
RO
7:0
Capability ID (ID): Indicates a Messaged Signal Interrupt capability.
NXT_PTR3—Next Item Pointer #3 Register
Register Address:
Default Value:
91h
00h
Attribute:
Size:
RO
8 bits
Default
Bit
and
Description
Access
00h
RO
Pointer to Next Capability (NEXT): 00h indicates this is the last
capability in the list.
7:0
MSI_CTL—Message Control Register
Register Address:
Default Value:
92h
0000h
Attribute:
Size:
RO, R/W
16 bits
Default
Bit
and
Description
Access
00h
RO
15:8
7:7
6:4
3:1
Reserved
0
RO
64-bit Address Capable (C64): 32-bit capable only
000b
R/W
Multiple Message Enable (MME): This field is R/W for software
compatibility, but only a single message is ever generated.
000b
RO
Multiple Message Capable (MMC): This device is only single message
capable.
MSI Enable (MSIE): If set, MSI is enabled and traditional interrupts are
not used to generate interrupts. CMD.BME must be set for an MSI to be
generated.
0
R/W
0
112
Datasheet
INTEL [ INTEL ]
