Actually fix OPL4 ID readbacks

2025-09-18 15:10:33 +06:00
parent 376dccf86d
commit a9861c04f2
1 changed files with 8 additions and 2 deletions
--- 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;
 }