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BIOS Setup (SCU)
3.4 Advanced menu
Parameter
VT-d
The following Setup parameters are visible if "VT-d" is enabled:
After G3 On
DeepSx Power Policies
Max TOLUD
HPET Support
PCI MMIO
Only with IPC6x7 and IPC8x7
1
Only with IPC4x7
2
Only with Field programming device
3
Only with IPC647 and IPC847
4
Only with the latest generation, e.g. not with Field PG M5
5
26
1 2 3
Interrupt Remapping
2 3
Pass-Through DMA
2 3
1
4
1
3
Meaning
Disabled
Disable hardware support for the sharing
I/O devices with multiple virtual machines.
Auto
If Intel Virtualization Technology for Directed
1
I/O (VT-d) is supported, this feature is enabled:
Enabled
2 3
VMM (Virtual Machine Monitor) systems can then
use VT-d to manage multiple virtual machines
that access the same physical I/O device.
The virtualization software has (Enabled) or does not have (Disabled)
direct access to interrupts.
The virtualization software has (Enabled) or does not have (Disabled)
direct access to DMA channels.
Specifies the device reaction to voltage failure and voltage recovery.
S0
After voltage failure and subsequent voltage
restoration, the device switches on automatically.
S5
After voltage failure and subsequent voltage
restoration, the device remains switched off.
Last State
If the device is switched on when the power fails,
the device will switch back on when the power
returns. Otherwise, the device remains switched
off.
If enabled (Enabled), the devices switches itself to idle state, a mode
with the lowest power consumption.
Disabled
Disable DeepSx-Modes (deep sleep).
Enabled in S5
Enable DeepSx-Modes for operating state S5.
Enabled in S4-S5
Enable DeepSx-Modes for operating states S4
and S5.
1 to 3.25 GB in
Maximum value of TOLUD (Top of Low Usable
0.25 increments
DRAM).
The high-precision timer (High Precision Event Timer) for multimedia is
always active and can be used (Enabled) or switched of
1 GB
When enabled (Enabled), the memory manage-
1.25 GB
ment of the operating system is notified that a
1.5 GB
memory area of the selected size must be keep
2 GB
free, e.g., for I/O cards.
Operating Manual, 05/2016, A5E33664825-AB
(Disabled
).
5
5
BIOS Description

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   Also See for Siemens SIMATIC IPC627D

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