Extended mode toggle

Cacodemon345 · Mar 2, 2024 · 4e9b40a · 4e9b40a
1 parent d15706c
commit 4e9b40a
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Showing 2 changed files with 8 additions and 0 deletions.
diff --git a/src/include/86box/snd_sb_dsp.h b/src/include/86box/snd_sb_dsp.h
@@ -142,6 +142,7 @@ typedef struct sb_dsp_t {
 
     uint8_t ess_regs[256]; /* ESS registers. */
     uint8_t ess_playback_mode;
+    uint8_t ess_extended_mode;
 
     mpu_t *mpu;
 } sb_dsp_t;

diff --git a/src/sound/snd_sb_dsp.c b/src/sound/snd_sb_dsp.c
@@ -610,6 +610,13 @@ sb_exec_command(sb_dsp_t *dsp)
     if (dsp->sb_type >= SB16)
         dsp->sb_8051_ram[0x20] = dsp->sb_command;
 
+    if (IS_ESS(dsp)) {
+        if (dsp->sb_command == 0xC6 || dsp->sb_command == 0xC7){
+            dsp->ess_extended_mode = !!(dsp->sb_command == 0xC6);
+            return;
+        }
+    }
+
     switch (dsp->sb_command) {
         case 0x01: /* ???? */
             if (dsp->sb_type >= SB16)