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

PCIe and Graphics

PCI Express Root Port 6

PCI Express Root Port 6 firmware setup page decoded from AMI HII/IFR resources.

Form ID
0x1038
Records
34
Path
Setup / Chipset / PCH-IO Configuration / PCI Express Configuration / PCI Express Root Port 6

Record 3446

PCI Express Root Port 6

Firmware Value

Control the PCI Express Root Port.

Opcode
OneOf
Question ID
0xcaa
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x104
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Record 3447

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
0xcab
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x36c
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Built-in
1SlotStandard default

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}
  • {"condition_id": 1538, "type": "GrayOutIf", "offset": 481626, "expr": ["EqIdVal QuestionId: 0xCB8, Value: 0x1"]}

Record 3448

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
0x15e5
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x120
Width
1 byte(s)
Range
0 to 4 step 0
ValueLabelMarkers
0DisabledStandard default
2L1
4Auto

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3449

L1 Substates

Firmware Value

PCI Express L1 Substates settings.

Opcode
OneOf
Question ID
0x1601
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x2c4
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1L1.1
2L1.1 & L1.2

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3450

L1 Low

Firmware Value

PCI Express L1 Low Substate Enable/Disable.

Opcode
OneOf
Question ID
0xcac
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x2e0
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3451

ACS

Firmware Value

Enable/Disable Access Control Services Extended Capability

Opcode
OneOf
Question ID
0xcad
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x2fc
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3452

PTM

Firmware Value

Enable/Disable Precision Time Measurement

Opcode
OneOf
Question ID
0x161d
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x318
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3453

DPC

Firmware Value

Enable/Disable Downstream Port Containment

Opcode
OneOf
Question ID
0xcae
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x334
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3454

EDPC

Firmware Value

Enable/Disable Rootport extensions for Downstream Port Containment

Opcode
OneOf
Question ID
0xcaf
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x350
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3455

URR

Firmware Value

PCI Express Unsupported Request Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xcb0
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x13c
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3456

FER

Firmware Value

PCI Express Device Fatal Error Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xcb1
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x158
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3457

NFER

Firmware Value

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

Opcode
OneOf
Question ID
0xcb2
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x174
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3458

CER

Firmware Value

PCI Express Device Correctable Error Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xcb3
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x190
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3459

SEFE

Firmware Value

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

Opcode
OneOf
Question ID
0xcb4
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x1e4
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3460

SENFE

Firmware Value

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

Opcode
OneOf
Question ID
0xcb5
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x200
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3461

SECE

Firmware Value

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

Opcode
OneOf
Question ID
0xcb6
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x21c
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3462

PME SCI

Firmware Value

PCI Express PME SCI Enable/Disable.

Opcode
OneOf
Question ID
0xcb7
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x238
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3463

Hot Plug

Firmware Value

PCI Express Hot Plug Enable/Disable.

Opcode
OneOf
Question ID
0xcb8
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x254
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}
  • {"condition_id": 1539, "type": "GrayOutIf", "offset": 482178, "expr": ["EqIdVal QuestionId: 0xCAB, Value: 0x0"]}

Record 3464

Advanced Error Reporting

Firmware Value

Advanced Error Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xcb9
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x270
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3465

PCIe Speed

Firmware Value

Configure PCIe Speed

Opcode
OneOf
Question ID
0xcba
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x28c
Width
1 byte(s)
Range
0 to 3 step 0
ValueLabelMarkers
0AutoStandard default
1Gen1
2Gen2
3Gen3

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3466

Transmitter Half Swing

Firmware Value

Transmitter Half Swing Enable/Disable.

Opcode
OneOf
Question ID
0xcbb
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x2a8
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3467

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
0xcbc
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x38d
Width
2 byte(s)
Range
0 to 65535 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3468

Extra Bus Reserved

Firmware Value

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

Opcode
Numeric
Question ID
0xcbd
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x524
Width
1 byte(s)
Range
0 to 7 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3469

Reserved Memory

Firmware Value

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

Opcode
Numeric
Question ID
0xcbe
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x545
Width
2 byte(s)
Range
1 to 20 step 1

Default store records

Store IDStore labelValueOption label
0Standard10

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3470

Reserved I/O

Firmware Value

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

Opcode
Numeric
Question ID
0xcbf
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x578
Width
1 byte(s)
Range
4 to 20 step 4

Default store records

Store IDStore labelValueOption label
0Standard4

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3471

LTR

Firmware Value

PCH PCIE Latency Reporting Enable/Disable

Opcode
OneOf
Question ID
0xcc0
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x3e8
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3472

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
0xcc1
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x420
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0Disabled
1Manual
2AutoStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}
  • {"condition_id": 1540, "type": "SuppressIf", "offset": 482493, "expr": ["EqIdVal QuestionId: 0xCC0, Value: 0x0"]}

Record 3473

Snoop Latency Value

Firmware Value

LTR Snoop Latency value of PCH PCIE

Opcode
Numeric
Question ID
0xcc2
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x495
Width
2 byte(s)
Range
0 to 1023 step 1

Default store records

Store IDStore labelValueOption label
0Standard60

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}
  • {"condition_id": 1540, "type": "SuppressIf", "offset": 482493, "expr": ["EqIdVal QuestionId: 0xCC0, Value: 0x0"]}
  • {"condition_id": 1541, "type": "SuppressIf", "offset": 482541, "expr": ["EqIdVal QuestionId: 0xCC1, Value: 0x1", "Not"]}

Record 3474

Snoop Latency Multiplier

Firmware Value

LTR Snoop Latency Multiplier of PCH PCIE

Opcode
OneOf
Question ID
0xcc3
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x43c
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": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}
  • {"condition_id": 1540, "type": "SuppressIf", "offset": 482493, "expr": ["EqIdVal QuestionId: 0xCC0, Value: 0x0"]}
  • {"condition_id": 1541, "type": "SuppressIf", "offset": 482541, "expr": ["EqIdVal QuestionId: 0xCC1, Value: 0x1", "Not"]}

Record 3475

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
0xcc4
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x458
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0Disabled
1Manual
2AutoStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}
  • {"condition_id": 1540, "type": "SuppressIf", "offset": 482493, "expr": ["EqIdVal QuestionId: 0xCC0, Value: 0x0"]}

Record 3476

Non Snoop Latency Value

Firmware Value

LTR Non Snoop Latency value of PCH PCIE

Opcode
Numeric
Question ID
0xcc5
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x4cd
Width
2 byte(s)
Range
0 to 1023 step 1

Default store records

Store IDStore labelValueOption label
0Standard60

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}
  • {"condition_id": 1540, "type": "SuppressIf", "offset": 482493, "expr": ["EqIdVal QuestionId: 0xCC0, Value: 0x0"]}
  • {"condition_id": 1542, "type": "SuppressIf", "offset": 482685, "expr": ["EqIdVal QuestionId: 0xCC4, Value: 0x1", "Not"]}

Record 3477

Non Snoop Latency Multiplier

Firmware Value

LTR Non Snoop Latency Multiplier of PCH PCIE

Opcode
OneOf
Question ID
0xcc6
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x474
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": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}
  • {"condition_id": 1540, "type": "SuppressIf", "offset": 482493, "expr": ["EqIdVal QuestionId: 0xCC0, Value: 0x0"]}
  • {"condition_id": 1542, "type": "SuppressIf", "offset": 482685, "expr": ["EqIdVal QuestionId: 0xCC4, Value: 0x1", "Not"]}

Record 3478

LTR Lock

Firmware Value

PCIE LTR Configuration Lock

Opcode
OneOf
Question ID
0xcc7
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x404
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}

Record 3479

Peer Memory Write Enable

Firmware Value

Peer Memory Write Enable/Disable

Opcode
OneOf
Question ID
0xcc8
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0xc3
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1537, "type": "SuppressIf", "offset": 481618, "expr": ["EqIdVal QuestionId: 0xCAA, Value: 0x0"]}