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-rw-r--r--src/emu/sound/k054539.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/src/emu/sound/k054539.h b/src/emu/sound/k054539.h
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+++ b/src/emu/sound/k054539.h
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+/*********************************************************
+
+ Konami 054539 PCM Sound Chip
+
+*********************************************************/
+#ifndef __K054539_H__
+#define __K054539_H__
+
+struct K054539interface {
+ int region; /* memory regions of sample ROM(s) */
+ void (*apan)(double, double); /* Callback for analog output mixing levels (0..1 for each channel) */
+ void (*irq)( void );
+};
+
+
+WRITE8_HANDLER( K054539_0_w );
+READ8_HANDLER( K054539_0_r );
+WRITE8_HANDLER( K054539_1_w );
+READ8_HANDLER( K054539_1_r );
+
+//* control flags, may be set at DRIVER_INIT().
+#define K054539_RESET_FLAGS 0
+#define K054539_REVERSE_STEREO 1
+#define K054539_DISABLE_REVERB 2
+#define K054539_UPDATE_AT_KEYON 4
+
+void K054539_init_flags(int chip, int flags);
+
+/*
+ Note that the eight PCM channels of a K054539 do not have seperate
+ volume controls. Considering the global attenuation equation may not
+ be entirely accurate, K054539_set_gain() provides means to control
+ channel gain. It can be called anywhere but preferrably from
+ DRIVER_INIT().
+
+ Parameters:
+ chip : 0 / 1
+ channel : 0 - 7
+ gain : 0.0=silent, 1.0=no gain, 2.0=twice as loud, etc.
+*/
+void K054539_set_gain(int chip, int channel, double gain);
+
+#endif /* __K054539_H__ */