From c82ae7b117fe3e96b65474a973d5ec7e111ed29a Mon Sep 17 00:00:00 2001
From: "R. Belmont" <rb6502@users.noreply.github.com>
Date: Thu, 19 Jun 2014 02:14:11 +0000
Subject: [PATCH] (MESS) mac: fix 0.153 regression that prevented several Macs
 from booting. [R. Belmont]

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

diff --git a/src/emu/sound/asc.c b/src/emu/sound/asc.c
index 8dc9f9d43de..fc6d196e3c5 100644
--- a/src/emu/sound/asc.c
+++ b/src/emu/sound/asc.c
@@ -587,7 +587,7 @@ WRITE8_MEMBER( asc_device::write )
 				break;
 		}
 
-		if (offset < 0x800)
+		if (offset >= 0x800 && offset < 0x1000)
 		{
 			m_regs[offset-0x800] = data;
 		}