mirror of
https://github.com/ZDoom/gzdoom-gles.git
synced 2024-11-14 08:30:50 +00:00
97 lines
2.2 KiB
C
97 lines
2.2 KiB
C
|
// MSX computer KSS music file emulator
|
||
|
|
|
||
|
|
// Game_Music_Emu 0.5.2
|
||
|
|
#ifndef KSS_EMU_H
|
||
|
|
#define KSS_EMU_H
|
||
|
|
|
||
|
|
#include "Classic_Emu.h"
|
||
|
|
#include "Kss_Scc_Apu.h"
|
||
|
|
#include "Kss_Cpu.h"
|
||
|
|
#include "Sms_Apu.h"
|
||
|
|
#include "Ay_Apu.h"
|
||
|
|
|
||
|
|
class Kss_Emu : private Kss_Cpu, public Classic_Emu {
|
||
|
|
typedef Kss_Cpu cpu;
|
||
|
|
public:
|
||
|
|
// KSS file header
|
||
|
|
enum { header_size = 0x10 };
|
||
|
|
struct header_t
|
||
|
|
{
|
||
|
|
byte tag [4];
|
||
|
|
byte load_addr [2];
|
||
|
|
byte load_size [2];
|
||
|
|
byte init_addr [2];
|
||
|
|
byte play_addr [2];
|
||
|
|
byte first_bank;
|
||
|
|
byte bank_mode;
|
||
|
|
byte extra_header;
|
||
|
|
byte device_flags;
|
||
|
|
};
|
||
|
|
|
||
|
|
enum { ext_header_size = 0x10 };
|
||
|
|
struct ext_header_t
|
||
|
|
{
|
||
|
|
byte data_size [4];
|
||
|
|
byte unused [4];
|
||
|
|
byte first_track [2];
|
||
|
|
byte last_tack [2];
|
||
|
|
byte psg_vol;
|
||
|
|
byte scc_vol;
|
||
|
|
byte msx_music_vol;
|
||
|
|
byte msx_audio_vol;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct composite_header_t : header_t, ext_header_t { };
|
||
|
|
|
||
|
|
// Header for currently loaded file
|
||
|
|
composite_header_t const& header() const { return header_; }
|
||
|
|
|
||
|
|
static gme_type_t static_type() { return gme_kss_type; }
|
||
|
|
public:
|
||
|
|
Kss_Emu();
|
||
|
|
~Kss_Emu();
|
||
|
|
protected:
|
||
|
|
blargg_err_t track_info_( track_info_t*, int track ) const;
|
||
|
|
blargg_err_t load_( Data_Reader& );
|
||
|
|
blargg_err_t start_track_( int );
|
||
|
|
blargg_err_t run_clocks( blip_time_t&, int );
|
||
|
|
void set_tempo_( double );
|
||
|
|
void set_voice( int, Blip_Buffer*, Blip_Buffer*, Blip_Buffer* );
|
||
|
|
void update_eq( blip_eq_t const& );
|
||
|
|
void unload();
|
||
|
|
private:
|
||
|
|
Rom_Data<page_size> rom;
|
||
|
|
composite_header_t header_;
|
||
|
|
|
||
|
|
bool scc_accessed;
|
||
|
|
bool gain_updated;
|
||
|
|
void update_gain();
|
||
|
|
|
||
|
|
unsigned scc_enabled; // 0 or 0xC000
|
||
|
|
byte const* bank_data;
|
||
|
|
int bank_count;
|
||
|
|
void set_bank( int logical, int physical );
|
||
|
|
blargg_long bank_size() const { return (16 * 1024L) >> (header_.bank_mode >> 7 & 1); }
|
||
|
|
|
||
|
|
blip_time_t play_period;
|
||
|
|
blip_time_t next_play;
|
||
|
|
int ay_latch;
|
||
|
|
|
||
|
|
friend void kss_cpu_out( class Kss_Cpu*, cpu_time_t, unsigned addr, int data );
|
||
|
|
friend int kss_cpu_in( class Kss_Cpu*, cpu_time_t, unsigned addr );
|
||
|
|
void cpu_write( unsigned addr, int data );
|
||
|
|
friend void kss_cpu_write( class Kss_Cpu*, unsigned addr, int data );
|
||
|
|
|
||
|
|
// large items
|
||
|
|
enum { mem_size = 0x10000 };
|
||
|
|
byte ram [mem_size + cpu_padding];
|
||
|
|
|
||
|
|
Ay_Apu ay;
|
||
|
|
Scc_Apu scc;
|
||
|
|
Sms_Apu* sn;
|
||
|
|
byte unmapped_read [0x100];
|
||
|
|
byte unmapped_write [page_size];
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|