From ec589d929ae428402f072d5dcb21a9369fb269ed Mon Sep 17 00:00:00 2001
From: Gustavo Henrique Santos Souza de Miranda <gustavohssmiranda@gmail.com>
Date: Wed, 3 Jun 2026 14:13:50 -0300
Subject: [PATCH] Update the timing for the delays and also create the Write
 method on the HAL to choreograph the writing process in the YMF262 and create
 the Set_OPL_Mode , and also created the YMF262-Types.hpp to hold types used
 by the YMF262

---
 Lib/YMF262-HAL/Inc/YMF262-HAL.hpp   | 13 +++++++++----
 Lib/YMF262-HAL/Inc/YMF262-Types.hpp |  9 +++++++++
 2 files changed, 18 insertions(+), 4 deletions(-)
 create mode 100644 Lib/YMF262-HAL/Inc/YMF262-Types.hpp

diff --git a/Lib/YMF262-HAL/Inc/YMF262-HAL.hpp b/Lib/YMF262-HAL/Inc/YMF262-HAL.hpp
index 6c225fd..2fa0fee 100644
--- a/Lib/YMF262-HAL/Inc/YMF262-HAL.hpp
+++ b/Lib/YMF262-HAL/Inc/YMF262-HAL.hpp
@@ -3,12 +3,13 @@
 
 #include <cstdint>
 #include "GPIO.hpp"
+#include "YMF262-Types.hpp"
 
 template <class GPIOPolicy>
 class YMF262_HAL{
      private:
     
-     GPIOPolicy _gpio;
+    GPIOPolicy& _gpio;
     uint32_t _t_icw_ticks;
     uint32_t _t_as_ticks;
     uint32_t _t_ah_ticks;
@@ -40,9 +41,9 @@ class YMF262_HAL{
     public:
 
      
-    YMF262_HAL(GPIOPolicy policy, uint32_t opl_clock, uint32_t cpu_clock){
-        _t_icw_ticks = (400 * cpu_clock) / opl_clock;
-        _t_recovery_ticks = (32 * cpu_clock) / opl_clock;
+    YMF262_HAL(GPIOPolicy& policy, uint32_t opl_clock, uint32_t cpu_clock):_gpio(policy){
+        _t_icw_ticks = 400 * (cpu_clock/ opl_clock);
+        _t_recovery_ticks = 32 * (cpu_clock / opl_clock);
         double ticks_per_ns = (double)cpu_clock / 1.0e9;
         _t_as_ticks    = (uint32_t)(10  * ticks_per_ns);
         _t_ah_ticks    = (uint32_t)(10  * ticks_per_ns); 
@@ -61,6 +62,10 @@ class YMF262_HAL{
         write_bus(bank,Port::DATA,data);
     };
 
+    void set_OPL_Mode(OPLMode mode){
+        write(Bank::BANK_1, 0x105, (mode == OPLMode::OPL3) ? 0x01 : 0x00);
+    };
+
 };
 
 #endif
\ No newline at end of file
diff --git a/Lib/YMF262-HAL/Inc/YMF262-Types.hpp b/Lib/YMF262-HAL/Inc/YMF262-Types.hpp
new file mode 100644
index 0000000..addcfc2
--- /dev/null
+++ b/Lib/YMF262-HAL/Inc/YMF262-Types.hpp
@@ -0,0 +1,9 @@
+#ifndef YMF262_MODES_HPP
+#define YMF262_MODES_HPP
+
+enum class OPLMode{
+    OPL3,
+    OPL2
+};
+
+#endif
\ No newline at end of file