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diff --git a/cpu/Cyclone/config.h b/cpu/Cyclone/config.h
index e180490..d73b5b5 100644
--- a/cpu/Cyclone/config.h
+++ b/cpu/Cyclone/config.h
@@ -65,6 +65,17 @@
 #define MEMHANDLERS_CHANGE_FLAGS    0
 #define MEMHANDLERS_CHANGE_CYCLES   0
 
+/*
+ * If the following macro is defined, Cyclone no longer calls read*, write*,
+ * fetch* and checkpc from it's context, it calls these functions directly
+ * instead, prefixed with prefix selected below. For example, if
+ * MEMHANDLERS_DIRECT_PREFIX is set to cyclone_, it will call cyclone_read8
+ * on byte reads.
+ * This is to avoid indirect jumps, which are slower. It also saves one ARM
+ * instruction.
+ */
+/* MEMHANDLERS_DIRECT_PREFIX "cyclone_" */
+
 /*
  * If enabled, Cyclone will call .IrqCallback routine from it's context whenever it
  * acknowledges an IRQ. IRQ level (.irq) is not cleared automatically, do this in your