it's better to declare hardware registers as volatile

(cherry picked from commit ca30a49)
Zal0 · Aug 18, 2023 · ffca1a1 · ffca1a1
1 parent b64f79c
commit ffca1a1
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/common/src/Sound.c b/common/src/Sound.c
@@ -3,14 +3,16 @@
 #include <stdarg.h>
 #include "Music.h"
 
+typedef volatile UINT8 * REG_PTR;
+
 const UINT8 FX_REG_SIZES[] = {5, 4, 5, 4, 3};
 const UINT16 FX_ADDRESS[] = {0xFF10, 0xFF16, 0xFF1A, 0xFF20, 0xFF24};
 
 extern UINT8 music_mute_frames;
 
 void PlayFx(SOUND_CHANNEL channel, UINT8 mute_frames, ...) {
 	UINT8 i;
-	UINT8* reg = (UINT8*)FX_ADDRESS[channel];
+	REG_PTR reg = (REG_PTR)FX_ADDRESS[channel];
 	va_list list;
 
 	if(channel != CHANNEL_5) {