53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
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//////////////////////////////////////////////////////////////////////////
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// //
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// APU Interface class //
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// Norix //
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// written 2001/09/18 //
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// last modify ----/--/-- //
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//////////////////////////////////////////////////////////////////////////
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#ifndef __APU_INTERFACE_INCLUDED__
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#define __APU_INTERFACE_INCLUDED__
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#define WIN32_LEAN_AND_MEAN
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#include "windows.h"
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#include "typedef.h"
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#include "macro.h"
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#define APU_CLOCK 1789772.5f
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// Fixed point decimal macro
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#define INT2FIX(x) ((x)<<16)
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#define FIX2INT(x) ((x)>>16)
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// APU<50>C<EFBFBD><43><EFBFBD>^<5E>[<5B>t<EFBFBD>F<EFBFBD>[<5B>X<EFBFBD><58><EFBFBD>ۃN<DB83><4E><EFBFBD>X
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class APU_INTERFACE
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{
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public:
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// <20><><EFBFBD>Ɏ<EFBFBD><C98E><EFBFBD><EFBFBD><EFBFBD><EFBFBD>v<EFBFBD><76><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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virtual void Reset( FLOAT fClock, INT nRate ) = 0;
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virtual void Setup( FLOAT fClock, INT nRate ) = 0;
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virtual void Write( WORD addr, BYTE data ) = 0;
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virtual INT Process( INT channel ) = 0;
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// <20>I<EFBFBD>v<EFBFBD>V<EFBFBD><56><EFBFBD><EFBFBD><EFBFBD>Ŏ<EFBFBD><C58E><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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virtual BYTE Read ( WORD addr ) { return (BYTE)(addr>>8); }
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virtual void WriteSync( WORD addr, BYTE data ) {}
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virtual BYTE ReadSync ( WORD addr ) { return 0; }
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virtual void VSync() {}
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virtual BOOL Sync( INT cycles ) { return FALSE; } // IRQ<52><EFBFBD><F094AD90><EFBFBD><EFBFBD>鎞TRUE<55><45><EFBFBD>Ԃ<EFBFBD>
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virtual INT GetFreq( INT channel ) { return 0; }
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// For State save
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virtual INT GetStateSize() { return 0; }
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virtual void SaveState( LPBYTE p ) {}
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virtual void LoadState( LPBYTE p ) {}
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protected:
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private:
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};
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#endif // !__APU_INTERFACE_INCLUDED__
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