i9 BIOS
Leo-Patch 1.6 · Q1HY MoDT · Observations 14 October 2026

PCIe and Graphics

PCI Express Root Port 13

PCI Express Root Port 13 firmware setup page decoded from AMI HII/IFR resources.

Form ID
0x13f0
Records
34
Path
Setup / Chipset / PCH-IO Configuration / PCI Express Configuration / PCI Express Root Port 13

Record 3684

PCI Express Root Port 13

Firmware Value

Control the PCI Express Root Port.

Opcode
OneOf
Question ID
0xd83
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x10b
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Record 3685

Connection Type

Firmware Value

Built-In: a built-in device is connected to this rootport.

Firmware help text

Built-In: a built-in device is connected to this rootport. SlotImplemented bit will be clear. Slot: this rootport connects to user-accessible slot. SlotImplemented bit will be set.

Opcode
OneOf
Question ID
0xd84
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x373
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Built-in
1SlotStandard default

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}
  • {"condition_id": 1580, "type": "GrayOutIf", "offset": 490663, "expr": ["EqIdVal QuestionId: 0xD91, Value: 0x1"]}

Record 3686

ASPM

Firmware Value

Set the ASPM Level: Force L0s - Force all links to L0s State AUTO - BIOS auto configure DISABLE - Disables ASPM

Firmware help text

Set the ASPM Level: Force L0s - Force all links to L0s State AUTO - BIOS auto configure DISABLE - Disables ASPM

Opcode
OneOf
Question ID
0x15ec
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x127
Width
1 byte(s)
Range
0 to 4 step 0
ValueLabelMarkers
0DisabledStandard default
2L1
4Auto

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3687

L1 Substates

Firmware Value

PCI Express L1 Substates settings.

Opcode
OneOf
Question ID
0x1608
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x2cb
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1L1.1
2L1.1 & L1.2

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3688

L1 Low

Firmware Value

PCI Express L1 Low Substate Enable/Disable.

Opcode
OneOf
Question ID
0xd85
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x2e7
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3689

ACS

Firmware Value

Enable/Disable Access Control Services Extended Capability

Opcode
OneOf
Question ID
0xd86
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x303
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3690

PTM

Firmware Value

Enable/Disable Precision Time Measurement

Opcode
OneOf
Question ID
0x1624
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x31f
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3691

DPC

Firmware Value

Enable/Disable Downstream Port Containment

Opcode
OneOf
Question ID
0xd87
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x33b
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3692

EDPC

Firmware Value

Enable/Disable Rootport extensions for Downstream Port Containment

Opcode
OneOf
Question ID
0xd88
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x357
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3693

URR

Firmware Value

PCI Express Unsupported Request Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xd89
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x143
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3694

FER

Firmware Value

PCI Express Device Fatal Error Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xd8a
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x15f
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3695

NFER

Firmware Value

PCI Express Device Non-Fatal Error Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xd8b
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x17b
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3696

CER

Firmware Value

PCI Express Device Correctable Error Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xd8c
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x197
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3697

SEFE

Firmware Value

Root PCI Express System Error on Fatal Error Enable/Disable.

Opcode
OneOf
Question ID
0xd8d
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x1eb
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3698

SENFE

Firmware Value

Root PCI Express System Error on Non-Fatal Error Enable/Disable.

Opcode
OneOf
Question ID
0xd8e
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x207
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3699

SECE

Firmware Value

Root PCI Express System Error on Correctable Error Enable/Disable.

Opcode
OneOf
Question ID
0xd8f
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x223
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3700

PME SCI

Firmware Value

PCI Express PME SCI Enable/Disable.

Opcode
OneOf
Question ID
0xd90
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x23f
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3701

Hot Plug

Firmware Value

PCI Express Hot Plug Enable/Disable.

Opcode
OneOf
Question ID
0xd91
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x25b
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}
  • {"condition_id": 1581, "type": "GrayOutIf", "offset": 491215, "expr": ["EqIdVal QuestionId: 0xD84, Value: 0x0"]}

Record 3702

Advanced Error Reporting

Firmware Value

Advanced Error Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xd92
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x277
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3703

PCIe Speed

Firmware Value

Configure PCIe Speed

Opcode
OneOf
Question ID
0xd93
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x293
Width
1 byte(s)
Range
0 to 3 step 0
ValueLabelMarkers
0AutoStandard default
1Gen1
2Gen2
3Gen3

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3704

Transmitter Half Swing

Firmware Value

Transmitter Half Swing Enable/Disable.

Opcode
OneOf
Question ID
0xd94
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x2af
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3705

Detect Timeout

Firmware Value

The number of milliseconds reference code will wait for link to exit Detect state for enabled ports before assuming there is no device and potentially disabling the port.

Opcode
Numeric
Question ID
0xd95
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x39b
Width
2 byte(s)
Range
0 to 65535 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3706

Extra Bus Reserved

Firmware Value

Extra Bus Reserved (0-7) for bridges behind this Root Bridge.

Opcode
Numeric
Question ID
0xd96
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x52b
Width
1 byte(s)
Range
0 to 7 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3707

Reserved Memory

Firmware Value

Reserved Memory for this Root Bridge (1-20) MB

Opcode
Numeric
Question ID
0xd97
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x553
Width
2 byte(s)
Range
1 to 20 step 1

Default store records

Store IDStore labelValueOption label
0Standard10

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3708

Reserved I/O

Firmware Value

Reserved I/O (4K/8K/12K/16K/20K) Range for this Root Bridge.

Opcode
Numeric
Question ID
0xd98
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x57f
Width
1 byte(s)
Range
4 to 20 step 4

Default store records

Store IDStore labelValueOption label
0Standard4

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3709

LTR

Firmware Value

PCH PCIE Latency Reporting Enable/Disable

Opcode
OneOf
Question ID
0xd99
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x3ef
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3710

Snoop Latency Override

Firmware Value

Snoop Latency Override for PCH PCIE.

Firmware help text

Snoop Latency Override for PCH PCIE. Disabled: Disable override. Manual: Manually enter override values. Auto (default): Maintain default BIOS flow.

Opcode
OneOf
Question ID
0xd9a
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x427
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0Disabled
1Manual
2AutoStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}
  • {"condition_id": 1582, "type": "SuppressIf", "offset": 491530, "expr": ["EqIdVal QuestionId: 0xD99, Value: 0x0"]}

Record 3711

Snoop Latency Value

Firmware Value

LTR Snoop Latency value of PCH PCIE

Opcode
Numeric
Question ID
0xd9b
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x4a3
Width
2 byte(s)
Range
0 to 1023 step 1

Default store records

Store IDStore labelValueOption label
0Standard60

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}
  • {"condition_id": 1582, "type": "SuppressIf", "offset": 491530, "expr": ["EqIdVal QuestionId: 0xD99, Value: 0x0"]}
  • {"condition_id": 1583, "type": "SuppressIf", "offset": 491578, "expr": ["EqIdVal QuestionId: 0xD9A, Value: 0x1", "Not"]}

Record 3712

Snoop Latency Multiplier

Firmware Value

LTR Snoop Latency Multiplier of PCH PCIE

Opcode
OneOf
Question ID
0xd9c
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x443
Width
1 byte(s)
Range
0 to 5 step 0
ValueLabelMarkers
01 ns
132 ns
21024 nsStandard defaultManufacturing default
332768 ns
41048576 ns
533554432 ns

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}
  • {"condition_id": 1582, "type": "SuppressIf", "offset": 491530, "expr": ["EqIdVal QuestionId: 0xD99, Value: 0x0"]}
  • {"condition_id": 1583, "type": "SuppressIf", "offset": 491578, "expr": ["EqIdVal QuestionId: 0xD9A, Value: 0x1", "Not"]}

Record 3713

Non Snoop Latency Override

Firmware Value

Non Snoop Latency Override for PCH PCIE.

Firmware help text

Non Snoop Latency Override for PCH PCIE. Disabled: Disable override. Manual: Manually enter override values. Auto (default): Maintain default BIOS flow.

Opcode
OneOf
Question ID
0xd9d
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x45f
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0Disabled
1Manual
2AutoStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}
  • {"condition_id": 1582, "type": "SuppressIf", "offset": 491530, "expr": ["EqIdVal QuestionId: 0xD99, Value: 0x0"]}

Record 3714

Non Snoop Latency Value

Firmware Value

LTR Non Snoop Latency value of PCH PCIE

Opcode
Numeric
Question ID
0xd9e
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x4db
Width
2 byte(s)
Range
0 to 1023 step 1

Default store records

Store IDStore labelValueOption label
0Standard60

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}
  • {"condition_id": 1582, "type": "SuppressIf", "offset": 491530, "expr": ["EqIdVal QuestionId: 0xD99, Value: 0x0"]}
  • {"condition_id": 1584, "type": "SuppressIf", "offset": 491722, "expr": ["EqIdVal QuestionId: 0xD9D, Value: 0x1", "Not"]}

Record 3715

Non Snoop Latency Multiplier

Firmware Value

LTR Non Snoop Latency Multiplier of PCH PCIE

Opcode
OneOf
Question ID
0xd9f
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x47b
Width
1 byte(s)
Range
0 to 5 step 0
ValueLabelMarkers
01 ns
132 ns
21024 nsStandard defaultManufacturing default
332768 ns
41048576 ns
533554432 ns

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}
  • {"condition_id": 1582, "type": "SuppressIf", "offset": 491530, "expr": ["EqIdVal QuestionId: 0xD99, Value: 0x0"]}
  • {"condition_id": 1584, "type": "SuppressIf", "offset": 491722, "expr": ["EqIdVal QuestionId: 0xD9D, Value: 0x1", "Not"]}

Record 3716

LTR Lock

Firmware Value

PCIE LTR Configuration Lock

Opcode
OneOf
Question ID
0xda0
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x40b
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}

Record 3717

Peer Memory Write Enable

Firmware Value

Peer Memory Write Enable/Disable

Opcode
OneOf
Question ID
0xda1
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0xca
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]}