diff --git a/README.md b/README.md
index dccfe2d..2b24118 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,7 @@
 # vexriscv_mem_mapped_example
+This is a very simple example for using the APB3 memory mapped bus inside the Vexriscv.
+The purpose is learning the mechanics of connecting larger extensions to the Vexriscv.
+
 ### Tools:
 Use the Virtual Machine 1.5 from: