From 12a77e490c6385c25a3103401d42c44e5d22e3d9 Mon Sep 17 00:00:00 2001
From: Aaron Giles <aaron@aarongiles.com>
Date: Tue, 3 Mar 2009 15:13:38 +0000
Subject: [PATCH] Of course, not crashing has its benefits too.

---
 src/emu/sound/scspdsp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/emu/sound/scspdsp.c b/src/emu/sound/scspdsp.c
index a7c30565990..65ec0f82912 100644
--- a/src/emu/sound/scspdsp.c
+++ b/src/emu/sound/scspdsp.c
@@ -163,6 +163,8 @@ void SCSPDSP_Step(struct _SCSPDSP *DSP)
 			INPUTS=DSP->MIXS[IRA-0x20]<<4;	//MIXS is 20 bit
 		else if(IRA<=0x31)
 			INPUTS=0;
+		else
+			return;
 
 		INPUTS<<=8;
 		INPUTS>>=8;