Index: trunk/ppSim/src/ppSimMakeDark.c
===================================================================
--- trunk/ppSim/src/ppSimMakeDark.c	(revision 14463)
+++ trunk/ppSim/src/ppSimMakeDark.c	(revision 14657)
@@ -2,5 +2,8 @@
 
 // XXX add bounds to the inputs?
-bool ppSimMakeDark (psImage *signal, psImage *variance, pmConfig *config) {
+bool ppSimMakeDark (pmReadout *readout, pmConfig *config) {
+
+    psImage *signal = readout->image;
+    psImage *variance = readout->weight;
 
     float darkRate = psMetadataLookupF32(NULL, config->arguments, "DARK.RATE"); // Dark rate