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git-svn-id: svn://svn.cc65.org/cc65/trunk@3 b7a2c559-68d2-44c3-8de9-860c34a00d81

include/_sid.h

@@ -0,0 +1,43 @@
+/*
+ * _sid.h
+ *
+ * Ullrich von Bassewitz, 22.09.1998
+ *
+ * Internal include file, do not use directly.
+ *
+ */
+
+
+
+#ifndef __SID_H
+#define __SID_H
+
+
+
+/* Define a structure with the sid register offsets */
+struct __sid_voice {
+    unsigned   	       	freq;		/* Frequency */
+    unsigned 		pw;		/* Pulse width */
+    unsigned char	ctrl;		/* Control register */
+    unsigned char	ad;		/* Attack/decay */
+    unsigned char	sr;		/* Sustain/release */
+};
+struct __sid {
+    struct __sid_voice	v1;     	/* Voice 1 */
+    struct __sid_voice 	v2;     	/* Voice 2 */
+    struct __sid_voice	v3;     	/* Voice 3 */
+    unsigned		flt_freq;   	/* Filter frequency */
+    unsigned char	flt_ctrl;	/* Filter control register */
+    unsigned char	amp;		/* Amplitude */
+    unsigned char	ad1;		/* A/D converter 1 */
+    unsigned char	noise;		/* Noise generator */
+    unsigned char	read3;		/* Value of voice 3 */
+};
+
+
+
+/* End of _sid.h */
+#endif
+
+
+