diff --git a/include/asm-m68k/mac_asc.h b/include/asm-m68k/mac_asc.h
new file mode 100644
index 0000000..fc2e546
--- /dev/null
+++ b/include/asm-m68k/mac_asc.h
@@ -0,0 +1,27 @@
+/*
+ *	Apple Sound Chip
+ */
+
+#ifndef __ASM_MAC_ASC_H
+#define __ASM_MAC_ASC_H
+
+/*
+ *	ASC offsets and controls
+ */
+
+#define ASC_BUF_BASE	0x00	/* RAM buffer offset */
+#define ASC_BUF_SIZE	0x800
+
+#define ASC_CONTROL	0x800
+#define ASC_CONTROL_OFF		0x00
+#define ASC_FREQ(chan,byte)	((0x810)+((chan)<<3)+(byte))
+#define ASC_ENABLE	0x801
+#define ASC_ENABLE_SAMPLE	0x02
+#define ASC_MODE	0x802
+#define ASC_MODE_SAMPLE		0x02
+
+#define ASC_VOLUME	0x806
+#define ASC_CHAN	0x807	/* ??? */
+
+
+#endif