diff --git a/Lib/YMF262-HAL/Inc/YMF262-HAL.hpp b/Lib/YMF262-HAL/Inc/YMF262-HAL.hpp
index 2fad9f7..6fad4ff 100644
--- a/Lib/YMF262-HAL/Inc/YMF262-HAL.hpp
+++ b/Lib/YMF262-HAL/Inc/YMF262-HAL.hpp
@@ -52,11 +52,13 @@ class YMF262_HAL{
         _gpio.delay_ticks(_t_as_ticks);
         _gpio.set_cs(State::ACTIVE);
         _gpio.set_wr(State::ACTIVE);
+        _gpio.delay_ticks(_t_ww_ticks-_t_wds_ticks);
         _gpio.set_data_bus(data);
         _gpio.delay_ticks(_t_wds_ticks);
         _gpio.set_wr(State::INACTIVE);
         _gpio.set_cs(State::INACTIVE);
-        _gpio.delay_ticks(_t_wdh_ticks);
+        _gpio.delay_ticks(_t_ah_ticks);
+        _gpio.delay_ticks(_t_wdh_ticks-_t_ah_ticks);
         _gpio.delay_ticks(_t_recovery_ticks);
 
     };