diff --git a/sections/cper-section-pci-dev.c b/sections/cper-section-pci-dev.c
new file mode 100644
index 0000000..aa3857b
--- /dev/null
+++ b/sections/cper-section-pci-dev.c
@@ -0,0 +1,62 @@
+/**
+ * Describes functions for converting PCI/PCI-X device CPER sections from binary and JSON format
+ * into an intermediate format.
+ * 
+ * Author: Lawrence.Tang@arm.com
+ **/
+#include <stdio.h>
+#include "json.h"
+#include "../edk/Cper.h"
+#include "../cper-utils.h"
+#include "cper-section-pci-dev.h"
+
+//Converts a single PCI/PCI-X device CPER section into JSON IR.
+json_object* cper_section_pci_dev_to_ir(void* section, EFI_ERROR_SECTION_DESCRIPTOR* descriptor)
+{
+    EFI_PCI_PCIX_DEVICE_ERROR_DATA* dev_error = (EFI_PCI_PCIX_DEVICE_ERROR_DATA*)section;
+    json_object* section_ir = json_object_new_object();
+
+    //Validation bits.
+    json_object* validation = bitfield_to_ir(dev_error->ValidFields, 5, PCI_DEV_ERROR_VALID_BITFIELD_NAMES);
+    json_object_object_add(section_ir, "validationBits", validation);
+
+    //Error status.
+    json_object* error_status = cper_generic_error_status_to_ir(&dev_error->ErrorStatus);
+    json_object_object_add(section_ir, "errorStatus", error_status);
+
+    //ID information.
+    json_object* id_info = json_object_new_object();
+    json_object_object_add(id_info, "vendorID", json_object_new_uint64(dev_error->IdInfo.VendorId));
+    json_object_object_add(id_info, "deviceID", json_object_new_uint64(dev_error->IdInfo.DeviceId));
+    json_object_object_add(id_info, "classCode", json_object_new_uint64(dev_error->IdInfo.ClassCode));
+    json_object_object_add(id_info, "functionNumber", json_object_new_uint64(dev_error->IdInfo.FunctionNumber));
+    json_object_object_add(id_info, "deviceNumber", json_object_new_uint64(dev_error->IdInfo.DeviceNumber));
+    json_object_object_add(id_info, "busNumber", json_object_new_uint64(dev_error->IdInfo.BusNumber));
+    json_object_object_add(id_info, "segmentNumber", json_object_new_uint64(dev_error->IdInfo.SegmentNumber));
+    json_object_object_add(section_ir, "idInfo", id_info);
+
+    //Number of following register data pairs.
+    json_object_object_add(section_ir, "memoryNumber", json_object_new_uint64(dev_error->MemoryNumber));
+    json_object_object_add(section_ir, "ioNumber", json_object_new_uint64(dev_error->IoNumber));
+    int num_data_pairs = dev_error->MemoryNumber + dev_error->IoNumber;
+
+    //Register pairs, described by the numeric fields.
+    //The actual "pairs" of address and data aren't necessarily 8 bytes long, so can't assume the contents.
+    //Hence the naming "firstHalf" and "secondHalf" rather than "address" and "data".
+    json_object* register_data_pair_array = json_object_new_array();
+    UINT64* cur_pos = (UINT64*)(dev_error + 1);
+    for (int i=0; i<num_data_pairs; i++)
+    {
+        //Save current pair to array.
+        json_object* register_data_pair = json_object_new_object();
+        json_object_object_add(register_data_pair, "firstHalf", json_object_new_uint64(*cur_pos));
+        json_object_object_add(register_data_pair, "secondHalf", json_object_new_uint64(*(cur_pos + 1)));
+        json_object_array_add(register_data_pair_array, register_data_pair);
+
+        //Move to next pair.
+        cur_pos += 2;
+    }
+    json_object_object_add(section_ir, "registerDataPairs", register_data_pair_array);
+
+    return section_ir;
+}
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