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AD1848: I23 bits 7-1 are read-only on CS4232/4236 non-B, fixes CS4236 non-B detection on Windows 2000

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win2kgamer
2025-10-21 20:34:09 -05:00
parent ceeb2d057d
commit 71fe92daed
1 changed files with 2 additions and 0 deletions
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2
src/sound/snd_ad1848.c
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@@ -521,6 +521,8 @@ readonly_x:
}
if (ad1848->type == AD1848_TYPE_CS4231) /* I23 is reserved and read-only on CS4231 non-A */
goto readonly_i;
if ((ad1848->type >= AD1848_TYPE_CS4232) || (ad1848->type <= AD1848_TYPE_CS4236)) /* I23 bits 7-1 are read-only on CS4231A/4232/4236 non-B, Win2k relies on this for detection */
val = (val & 0x01);
break;
case 24: