82371AB (PIIX4)
E
146
4/9/97 2:23 PM PIIX4aDS
INTEL CONFIDENTIAL
(until publication date)
PRELIMINARY
7.2.14.
DEVCTL—DEVICE CONTROL REGISTER (IO)
I/O Address:
Default Value:
Attribute:
Base + (2Ch)
00h
Read/Write
Bit
Description
31:28
Reserved.
27
Device 8 Bus Master Reload Enable (BM_RLD_DEV8)—R/W.
1=Enable any PCI Bus Master
request (PHOLD#, PCIREQA[0:3]) to reload the device monitor idle timer. 0=Disable.
26
Device 3 Idle Reload Enable (IDL_RLD_EN_DEV3)—R/W.
1=Enable the device monitor 3 idle
reload events to reload the device monitor 3 idle timer. 0=Disable. When device 3 is being used as a
software SMI timer, this bit should be cleared to prevent any events from reloading the timer.
25
Device 13 Trap Enable (TRP_EN_DEV13)—R/W.
1=Enable generation of a trap SMI for accesses
to the device monitor 13 enabled trap decode ranges. 0=Disable.
24
Device 12 Trap Enable (TRP_EN_DEV12)—R/W.
1=Enable generation of a trap SMI for accesses
to the device monitor 12 enabled trap decode ranges. 0=Disable.
23
Device 11 Trap Enable (TRP_EN_DEV11)—R/W.
1=Enable generation of a trap SMI for accesses
to the device monitor 11 enabled trap decode ranges. 0=Disable.
22
Device 11 Idle Enable (IDL_EN_DEV11)—R/W.
1=Enable the device monitor 11 idle reload events
to reload the device monitor 11 idle timer. 0=Disable.
21
Device 10 Trap Enable (TRP_EN_DEV10)—R/W.
1=Enable generation of a trap SMI for accesses
to the device monitor 10 enabled trap decode ranges. 0=Disable.
20
Device 10 Idle Enable (IDL_EN_DEV10)—R/W.
1=Enable the device monitor 10 idle reload events
to reload the device monitor 10 idle timer. 0=Disable.
19
Device 9 Trap Enable (TRP_EN_DEV9)—R/W.
1=Enable generation of a trap SMI for accesses to
the device monitor 9 enabled trap decode ranges. 0=Disable.
18
Device 9 Idle Enable (IDL_EN_DEV9)—R/W.
1=Enable the device monitor 9 idle reload events to
reload the device monitor 9 idle timer. 0=Disable.
17
Device 8 Trap Enable (TRP_EN_DEV8)—R/W.
1=Enable generation of a trap SMI for accesses to
the device monitor 8 enabled trap decode ranges. 0=Disable.
16
Device 8 Idle Enable (IDL_EN_DEV8)—R/W.
1=Enable the device monitor 8 idle reload events to
reload the device monitor 8 idle timer. 0=Disable.
15
Device 7 Trap Enable (TRP_EN_DEV7)—R/W.
1=Enable generation of a trap SMI for accesses to
the device monitor 7 enabled trap decode ranges. 0=Disable.
14
Device 7 Idle Enable (IDL_EN_DEV7)—R/W.
1=Enable the device monitor 7 idle reload events to
reload the device monitor 7 idle timer. 0=Disable.
13
Device 6 Trap Enable (TRP_EN_DEV6)—R/W.
1=Enable generation of a trap SMI for accesses to
the device monitor 6 enabled trap decode ranges. 0=Disable.
12
Device 6 Idle Enable (IDL_EN_DEV6)—R/W.
1=Enable the device monitor 6 idle reload events to
reload the device monitor 6 idle timer. 0=Disable.
11
Device 5 Trap Enable (TRP_EN_DEV5)—R/W.
1=Enable generation of a trap SMI for accesses to
the device monitor 5 enabled trap decode ranges. 0=Disable.