AC82G41SLGQ3 Datasheet, PDF (436/604 Pages) Intel Corporation – Intel® 4 Series Chipset Family

Intel^® Virtualization Technology for Directed I/O Registers (D0:F0) (Intel^® 82Q45 GMCH Only)
Bit
23
22:0
Access
RO
RO
Default
Value
0b
000000h
RST/PWR
Description
Core
Compatibility Format Interrupt (CFI): This field is valid
only for Intel 64 implementations supporting interrupt-
remapping. Software writes to this field to enable or
disable Compatibility Format interrupts on Intel 64
platforms. The value in this field is effective only when
interrupt-remapping is enabled and Legacy Interrupt Mode
is active.
0 = Block Compatibility format interrupts.
1 = Process Compatibility format interrupts as pass-
through (bypass interrupt remapping).
Hardware reports the status of updating this field through
the CFIS field in the Global Status register.
The value returned on a read of this field is undefined.
This field is not implemented on Itanium™
implementations.
Core
NOTE: This field is reserved as this feature is not
supported.
Reserved
436
Datasheet