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-rw-r--r--trunk/src/emu/sound/k054539.h117
1 files changed, 117 insertions, 0 deletions
diff --git a/trunk/src/emu/sound/k054539.h b/trunk/src/emu/sound/k054539.h
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+++ b/trunk/src/emu/sound/k054539.h
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+/*********************************************************
+
+ Konami 054539 PCM Sound Chip
+
+*********************************************************/
+
+#pragma once
+
+#ifndef __K054539_H__
+#define __K054539_H__
+
+#define MCFG_K054539_ADD(_tag, _clock, _interface) \
+ MCFG_DEVICE_ADD(_tag, K054539, _clock) \
+ k054539_device::static_set_interface(*device, _interface); \
+
+struct k054539_interface
+{
+ const char *rgnoverride;
+ void (*apan)(device_t *, double, double); /* Callback for analog output mixing levels (0..1 for each channel) */
+ void (*irq)(device_t *);
+};
+
+
+//* 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(device_t *device, int flags);
+
+void k054539_set_gain(device_t *device, int channel, double gain);
+
+class k054539_device : public device_t,
+ public device_sound_interface,
+ public k054539_interface
+{
+public:
+ enum {
+ RESET_FLAGS = 0,
+ REVERSE_STEREO = 1,
+ DISABLE_REVERB = 2,
+ UPDATE_AT_KEYON = 4
+ };
+
+ // construction/destruction
+ k054539_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // static configuration helpers
+ static void static_set_interface(device_t &device, const k054539_interface &interface);
+
+ DECLARE_WRITE8_MEMBER(write);
+ DECLARE_READ8_MEMBER(read);
+
+ void init_flags(int flags);
+
+ /*
+ Note that the eight PCM channels of a K054539 do not have separate
+ 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:
+ channel : 0 - 7
+ gain : 0.0=silent, 1.0=no gain, 2.0=twice as loud, etc.
+ */
+ void set_gain(int channel, double gain);
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+ virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
+
+ // device_sound_interface overrides
+ virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
+
+private:
+ struct channel {
+ UINT32 pos;
+ UINT32 pfrac;
+ INT32 val;
+ INT32 pval;
+ };
+
+ double voltab[256];
+ double pantab[0xf];
+
+ double gain[8];
+ UINT8 posreg_latch[8][3];
+ int flags;
+
+ unsigned char regs[0x230];
+ unsigned char *ram;
+ int reverb_pos;
+
+ INT32 cur_ptr;
+ int cur_limit;
+ unsigned char *cur_zone;
+ unsigned char *rom;
+ UINT32 rom_size;
+ UINT32 rom_mask;
+
+ channel channels[8];
+ sound_stream *stream;
+
+ bool regupdate();
+ void keyon(int channel);
+ void keyoff(int channel);
+ void init_chip();
+ void reset_zones();
+};
+
+extern const device_type K054539;
+
+#endif /* __K054539_H__ */