From 10fb80a8a621bc659f62aac93ae8b153f10262e4 Mon Sep 17 00:00:00 2001
From: h1romas4 <h1romas4@gmail.com>
Date: Sat, 11 Feb 2023 13:29:14 +0900
Subject: [PATCH] add support ymfm_external_write

---
 src/cpp/ymfmffi.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/cpp/ymfmffi.cpp b/src/cpp/ymfmffi.cpp
index f101802..2dfb266 100644
--- a/src/cpp/ymfmffi.cpp
+++ b/src/cpp/ymfmffi.cpp
@@ -205,6 +205,11 @@ class vgm_chip : public vgm_chip_base, public ymfm::ymfm_interface
         return (offset < data.size()) ? data[offset] : 0;
     }
 
+    virtual void ymfm_external_write(ymfm::access_class type, uint32_t address, uint8_t data) override
+    {
+        write_data(type, address, 1, &data);
+    }
+
     // internal state
     ChipType m_chip;
     uint32_t m_clock;