# !pcicam (dump the PCI/PCIe configuration space)

> !pcicam

### Syntax

> !pcicam \[Bus (hex)] \[Device (hex)] \[Function (hex)]
>
> !pcicam \[Bus (hex)] \[Device (hex)] \[Function (hex)] \[Dump (string)]

### Description

Dumps the PCI configuration space (CAM) for a given device.

### Parameters

**\[Bus (hex)]**

The PCI/PCI-e Bus number.

**\[Device (hex)]**

The PCI/PCI-e Device number.

**\[Function (hex)]**

The PCI/PCI-e Function number.

**\[Dump (string)] (optional)**

**x:** dump the PCI/PCI-e CAM in hexadecimal format.

### Examples

The following command interprets the PCI/PCI-e CAM fields of the **Bus:3**, **Device:0**, and **Function:0**.

```c
6: kHyperDbg> !pcicam 3 0 0
PCI configuration space (CAM) for device 0000:03:00:0

Common Header:
VID:DID: 8086:10d3
Vendor Name: Intel Corporation
Device Name: 82574L Gigabit Network Connection
Command: 0007
  Memory Space: 1
  I/O Space: 1
Status: 0010
Revision ID: 00
Class Code: 70eeac0b
CacheLineSize: 10
PrimaryLatencyTimer: 00
HeaderType: Endpoint (00)
  Multi-function Device: False
Bist: 00

Device Header:
BAR0
 BAR Type: MMIO
 BAR: fea00000
 BAR (actual): fea00000
 Prefetchable: False
 Addressable range: 0-00000000
BAR1
 BAR Type: MMIO
 BAR: fea20000
 BAR (actual): fea20000
 Prefetchable: False
 Addressable range: 0-00000000
BAR2
 BAR Type: Port IO
 BAR: 00004001
 BAR (actual): 00004000
 Reserved: 0
BAR3
 BAR Type: MMIO
 BAR: fea40000
 BAR (actual): fea40000
 Prefetchable: False
 Addressable range: 0-00000000
BAR4 [disabled]
 BAR Type: MMIO
 BAR: 00000000
 BAR (actual): 00000000
 Prefetchable: False
 Addressable range: 0-00000000
Cardbus CIS Pointer: 00000000
Subsystem Vendor ID: 15ad
Subsystem ID: 07d0
ROM BAR: ffff0000
Capabilities Pointer: c8
Reserved (0xD): 70eeac37
Reserved (0xE): 00000000
Interrupt Line: ff
Interrupt Pin: 01
Min Grant: 00
Max latency: 00

```

The following command interprets the PCI/PCI-e CAM fields of a **PCI Root Port** with the BDF number of **Bus:3**, **Device:0**, and **Function:0**.

```clike
6: kHyperDbg> !pcicam 0 17 7
PCI configuration space (CAM) for device 0000:00:17:7

Common Header:
VID:DID: 15ad:07a0
Vendor Name: VMware
Device Name: PCI Express Root Port
Command: 0006
Status: 0010
Revision ID: 01
Class Code: 70eeac0b
CacheLineSize: 00
PrimaryLatencyTimer: 00
HeaderType: PCI-to-PCI Bridge (81)
  Multi-function Device: True
Bist: 00

Device Header:
BAR0: 00000000
BAR1: 00000000
Primary Bus Number: 00
Secondary Bus Number: 1a
Subordinate Bus Number: 1a
Secondary Latency Timer: 00
I/O Base: f0
I/O Limit: 00
Secondary Status: 0000
Memory Base: fd30
Memory Limit: fd30
Prefetchable Memory Base: f8d1
Prefetchable Memory Limit: f8d1
Prefetchable Base Upper 32 Bits: 00000000
Prefetchable Limit Upper 32 Bits: 00000000
I/O Base Upper 16 Bits: 0000
I/O Limit Upper 16 Bits: 0000
Capability Pointer: 40
Reserved: 70eeac37
ROM BAR: 00000000
Interrupt Line: ff
Interrupt Pin: 00
Bridge Control: 0000
```

The following command dumps the PCI/PCI-e CAM of the **Bus:3**, **Device:0**, and **Function:0** in the hexadecimal format.

```clike
6: kHyperDbg> !pcicam 3 0 0 x
PCI configuration space (CAM) for device 0000:03:00:0
    00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
00: 86 80 d3 10 07 00 10 00 00 00 00 02 10 00 00 00 ................
10: 00 00 a0 fe 00 00 a2 fe 01 40 00 00 00 00 a4 fe ................
20: 00 00 00 00 00 00 00 00 00 00 00 00 ad 15 d0 07 ................
30: 00 00 ff ff c8 00 00 00 00 00 00 00 ff 01 00 00 ................
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
a0: 11 00 04 00 03 00 00 00 03 20 00 00 00 00 00 00 ................
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
c0: 00 00 00 00 00 00 00 00 01 d0 22 c8 00 20 00 14 ................
d0: 05 e0 80 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
e0: 10 a0 01 00 c1 8c 00 00 00 00 00 00 02 06 00 00 ................
f0: 00 00 02 02 00 00 00 00 00 00 00 00 00 00 00 00 ................
```

### SDK

None

### Remarks

Starting from **v0.13**, this command was added to the HyperDbg debugger.

This command is guaranteed to keep debuggee in a halt state (in Debugger Mode); thus, nothing will change during its execution.

### Requirements

None

### Related

[!pcitree (show PCI/PCI-e device tree)](https://docs.hyperdbg.org/commands/extension-commands/pcitree)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.hyperdbg.org/commands/extension-commands/pcicam.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.