2 files changed, 6 insertions, 0 deletions
diff --git a/src/extension/extension.rs b/src/extension/extension.rs
new file mode 100644
index 0000000..d50565a
--- /dev/null
+++ b/src/extension/extension.rs
@@ -0,0 +1,5 @@
+use crate::rv32_cpu::rv32_cpu::Rv32Cpu;
+
+pub trait Extension {
+    fn add_instructions(cpu: &mut Rv32Cpu) -> &mut Rv32Cpu;
+}
+\ No newline at end of file
diff --git a/src/extension/mod.rs b/src/extension/mod.rs
new file mode 100644
index 0000000..f339dde
--- /dev/null
+++ b/src/extension/mod.rs
@@ -0,0 +1 @@
+pub mod extension;
+\ No newline at end of file