actually obey the orders

src/engine/pattern.cpp

@@ -0,0 +1,22 @@
+#include "engine.h"
+
+static DivPattern emptyPat;
+
+DivPattern::DivPattern() {
+  memset(data,0,256*16);
+}
+
+DivPattern* DivChannelData::getPattern(int index, bool create) {
+  if (data[index]==NULL) {
+    if (create) {
+      data[index]=new DivPattern;
+    } else {
+      return &emptyPat;
+    }
+  }
+  return data[index];
+}
+
+DivChannelData::DivChannelData() {
+  memset(data,0,128*sizeof(void*));
+}