1 files changed, 14 insertions, 0 deletions
diff --git a/src/core.rs b/src/core.rs
new file mode 100644
index 0000000..0062e1c
--- /dev/null
+++ b/src/core.rs
@@ -0,0 +1,14 @@
+pub struct Core {
+    pc: u16,
+}
+
+impl Core {
+    pub fn new() -> Self {
+        Core { pc: 0 }
+    }
+
+    pub fn step(&mut self) -> u16 {
+        self.pc += 1;
+        self.pc
+    }
+}