Index: trunk/psModules/src/camera/pmFPACopy.c
===================================================================
--- trunk/psModules/src/camera/pmFPACopy.c	(revision 12791)
+++ trunk/psModules/src/camera/pmFPACopy.c	(revision 12810)
@@ -350,4 +350,46 @@
 }
 
+// create a new pmChip with the data derived from the supplied chip
+pmChip *pmChipDuplicate(pmFPA *fpa, const pmChip *sourceChip)
+{
+    assert(sourceChip);
+
+    bool status;
+    char *chipName = psMetadataLookupStr(&status, sourceChip->concepts, "CHIP.NAME");
+    pmChip *targetChip = pmChipAlloc (NULL, chipName);
+    targetChip->parent = fpa;
+
+    psArray *sourceCells = sourceChip->cells; // The source cells
+
+    for (int i = 0; i < sourceCells->n; i++) {
+        pmCell *sourceCell = sourceCells->data[i]; // The sources cell
+        const char *cellName = psMetadataLookupStr(NULL, sourceCell->concepts, "CELL.NAME"); // Name of cell
+	// XXX are there other concepts I need to copy first?
+	pmCell *targetCell = pmCellAlloc (targetChip, cellName);
+	int xParityTarget = psMetadataLookupS32(&status, sourceCell->concepts, "CELL.XPARITY"); // Target x parity
+	psMetadataAddS32 (targetCell->concepts, PS_LIST_TAIL, "CELL.XPARITY", PS_META_REPLACE, "", xParityTarget);
+	int yParityTarget = psMetadataLookupS32(&status, sourceCell->concepts, "CELL.YPARITY"); // Target y parity
+	psMetadataAddS32 (targetCell->concepts, PS_LIST_TAIL, "CELL.YPARITY", PS_META_REPLACE, "", yParityTarget);
+	if (!cellCopy(targetCell, sourceCell, true, 1, 1)) {
+	    psError(PS_ERR_BAD_PARAMETER_VALUE, false, "failed to duplicate chip\n");
+	    return NULL;
+	}
+	// update the attributes
+	targetCell->file_exists = sourceCell->file_exists;
+	targetCell->data_exists = sourceCell->data_exists;
+	targetCell->process     = sourceCell->process;
+    }
+
+    // Update the concepts
+    psMetadataCopy(targetChip->concepts, sourceChip->concepts);
+
+    // update the attributes
+    targetChip->file_exists = sourceChip->file_exists;
+    targetChip->data_exists = sourceChip->data_exists;
+    targetChip->process     = sourceChip->process;
+
+    return targetChip;
+}
+
 // Common engine for pmFPACopy and pmFPACopyStructure.
 // Iterate on the components