101 lines
2.1 KiB
C
101 lines
2.1 KiB
C
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//////////////////////////////////////////////////////////////////////////
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// Mapper020 Nintendo Disk System(FDS) //
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//////////////////////////////////////////////////////////////////////////
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class Mapper020 : public Mapper
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{
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public:
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Mapper020( NES* parent ) : Mapper(parent) {}
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void Reset();
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BYTE ExRead ( WORD addr );
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void ExWrite( WORD addr, BYTE data );
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void WriteLow( WORD addr, BYTE data );
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void Write(WORD addr, BYTE data);
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void Clock( INT cycles );
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void HSync( INT scanline );
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void VSync();
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BYTE ExCmdRead ( EXCMDRD cmd );
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void ExCmdWrite( EXCMDWR cmd, BYTE data );
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// For state save
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BOOL IsStateSave() { return TRUE; }
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void SaveState( LPBYTE p );
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void LoadState( LPBYTE p );
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void PPU_Latch( WORD addr );
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protected:
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enum {
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BLOCK_READY = 0,
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BLOCK_VOLUME_LABEL,
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BLOCK_FILE_AMOUNT,
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BLOCK_FILE_HEADER,
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BLOCK_FILE_DATA,
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};
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enum {
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SIZE_VOLUME_LABEL = 56,
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SIZE_FILE_AMOUNT = 2,
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SIZE_FILE_HEADER = 16,
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};
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enum {
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OFFSET_VOLUME_LABEL = 0,
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OFFSET_FILE_AMOUNT = 56,
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OFFSET_FILE_HEADER = 58,
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OFFSET_FILE_DATA = 74,
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};
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enum {
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MECHANICAL_SOUND_BOOT = 0,
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MECHANICAL_SOUND_SEEKEND,
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MECHANICAL_SOUND_MOTOR_ON,
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MECHANICAL_SOUND_MOTOR_OFF,
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MECHANICAL_SOUND_ALLSTOP,
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};
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BOOL bDiskThrottle;
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INT DiskThrottleTime;
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LPBYTE disk;
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LPBYTE disk_w;
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INT irq_counter, irq_latch; // $4020-$4021
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BYTE irq_enable, irq_repeat; // $4022
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BYTE irq_occur; // IRQ<52><51><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>0<EFBFBD>ȊO<C88A>ɂȂ<C982>
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BYTE irq_transfer; // <20><><EFBFBD>荞<EFBFBD>ݓ]<5D><><EFBFBD>t<EFBFBD><74><EFBFBD>O
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BYTE disk_enable; // Disk I/O enable
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BYTE sound_enable; // Sound I/O enable
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BYTE RW_start; // <20>ǂݏ<C782><DD8F><EFBFBD><EFBFBD>\<5C>ɂȂ<C982><C882><EFBFBD><EFBFBD><EFBFBD>IRQ<52><51><EFBFBD><EFBFBD>
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BYTE RW_mode; // <20>ǂݏ<C782><DD8F><EFBFBD><EFBFBD><EFBFBD><EFBFBD>[<5B>h
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BYTE disk_motor_mode; // <20>f<EFBFBD>B<EFBFBD>X<EFBFBD>N<EFBFBD><4E><EFBFBD>[<5B>^<5E>[
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BYTE disk_eject; // <20>f<EFBFBD>B<EFBFBD>X<EFBFBD>N<EFBFBD>J<EFBFBD>[<5B>h<EFBFBD>̑}<7D><>/<2F><><EFBFBD>}<7D><>
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BYTE drive_ready; // <20>ǂݏ<C782><DD8F><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǂ<EFBFBD><C782><EFBFBD>
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BYTE drive_reset; // <20>h<EFBFBD><68><EFBFBD>C<EFBFBD>u<EFBFBD><75><EFBFBD>Z<EFBFBD>b<EFBFBD>g<EFBFBD><67><EFBFBD><EFBFBD>
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INT block_point;
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INT block_mode;
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INT size_file_data;
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INT file_amount;
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INT point;
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BYTE first_access;
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BYTE disk_side;
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BYTE disk_mount_count;
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BYTE irq_type;
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// For mechanical sound
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BYTE sound_startup_flag;
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INT sound_startup_timer;
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INT sound_seekend_timer;
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void MechanicalSound( INT type );
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private:
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};
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