From f22dea820960424786fd895498e01165c06cd17a Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Fri, 1 Dec 2023 15:06:12 +0100
Subject: [PATCH] Disabled undocumented Sound Blaster mixer register FFh's for
 even more cards, fixes #3835.

---
 src/sound/snd_sb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sound/snd_sb.c b/src/sound/snd_sb.c
index 5f1aeb261..602c1c2a7 100644
--- a/src/sound/snd_sb.c
+++ b/src/sound/snd_sb.c
@@ -945,7 +945,7 @@ sb_ct1745_mixer_write(uint16_t addr, uint8_t val, void *priv)
                 break;
 
             case 0xff:
-                if (sb->dsp.sb_type > SBAWE32) {
+                if ((sb->dsp.sb_type > SBAWE32) && !sb->dsp.sb_16_dma_supported) {
                     /*
                        Bit 5: High DMA channel enabled (0 = yes, 1 = no);
                        Bit 2: ????;