diff --git a/main/main.cpp b/main/main.cpp
index 85592cb..6371304 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -14,6 +14,17 @@ int main() {
         vkvm::log(vkvm::INFO, "timer event callback");
     });
 
+    vkvm::buttonPressed(vkvm::KeyCode::A);
+    vkvm::buttonPressed(vkvm::KeyCode::D);
+    vkvm::buttonPressed(vkvm::KeyCode::Z);
+    vkvm::buttonPressed(vkvm::KeyCode::Backspcce);
+
+    vkvm::KeyCode code = vkvm::getLastPressedKey();
+    while(code != 0){
+        vkvm::log(vkvm::INFO, "keyCode: ", code);
+        code = vkvm::getLastPressedKey();
+    }
+
     std::string input;
     while(input != "exit"){
         std::cout << "type r for redraw and t for timer (exit to exit)" << std::endl;