From a9861c04f23665c1f69806eb0298479fcdf1cfe8 Mon Sep 17 00:00:00 2001
From: Cacodemon345 <wahil1976@outlook.com>
Date: Thu, 18 Sep 2025 15:10:33 +0600
Subject: [PATCH] Actually fix OPL4 ID readbacks

---
 src/sound/ymfm/ymfm_opl.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/sound/ymfm/ymfm_opl.cpp b/src/sound/ymfm/ymfm_opl.cpp
index b70102b65..99cddd05e 100644
--- a/src/sound/ymfm/ymfm_opl.cpp
+++ b/src/sound/ymfm/ymfm_opl.cpp
@@ -1716,8 +1716,14 @@ uint8_t ymf278b::read_status()
 uint8_t ymf278b::read_data_pcm()
 {
 	// read from PCM
-	if (bitfield(m_address, 9) != 0)
-		return m_pcm.read(m_address & 0xff);
+	if (bitfield(m_address, 9) != 0) {
+		auto ret = m_pcm.read(m_address & 0xff);
+		if (m_address == 0x202) {
+			ret &= ~0xe0;
+			ret |= 0x20;
+		}
+		return ret;
+	}
     return 0;
 }