mirror of
https://github.com/wavemotion-dave/NINTV-DS.git
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132 lines
3.5 KiB
C++
132 lines
3.5 KiB
C++
// =====================================================================================
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// Copyright (c) 2021-2024 Dave Bernazzani (wavemotion-dave)
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//
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// Copying and distribution of this emulator, its source code and associated
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// readme files, with or without modification, are permitted in any medium without
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// royalty provided the this copyright notice is used and wavemotion-dave (NINTV-DS)
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// and Kyle Davis (BLISS) are thanked profusely.
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//
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// The NINTV-DS emulator is offered as-is, without any warranty.
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// =====================================================================================
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#ifndef MICROSEQUENCER_H
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#define MICROSEQUENCER_H
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#include "AudioProducer.h"
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#include "SP0256_Registers.h"
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#include "types.h"
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#include "Processor.h"
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#include "ROM.h"
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#include "AudioOutputLine.h"
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#define FIFO_LOCATION 0x1800
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#define FIFO_MAX_SIZE 64
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TYPEDEF_STRUCT_PACK( _SP0256State
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{
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INT32 bitsLeft;
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INT32 currentBits;
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INT32 pc;
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INT32 stack;
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INT32 mode;
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INT32 repeatPrefix;
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INT32 page;
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INT32 command;
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INT32 repeat;
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INT32 period;
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INT32 periodCounter;
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INT32 amplitude;
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INT32 random;
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INT32 fifoHead;
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INT32 fifoSize;
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INT32 fifoBytes[64];
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INT32 y[6][2];
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INT8 b[6];
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INT8 f[6];
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INT8 periodInterpolation;
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INT8 amplitudeInterpolation;
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INT8 idle;
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INT8 lrqHigh;
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INT8 speaking;
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} SP0256State; )
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//registers
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extern INT32 repeat;
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extern INT32 period;
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extern INT32 periodCounter;
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extern INT32 amplitude;
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extern INT8 b[6];
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extern INT8 f[6];
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extern INT32 y[6][2];
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extern INT8 periodInterpolation;
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extern INT8 amplitudeInterpolation;
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extern INT32 bitsLeft;
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extern INT32 currentBits;
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//registers
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extern UINT16 pc;
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extern UINT16 stack;
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extern UINT8 mode;
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extern INT32 repeatPrefix;
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extern INT32 command;
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extern UINT16 fifoBytes[64];
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class SP0256 : public Processor, public AudioProducer
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{
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friend class SP0256_Registers;
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public:
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SP0256();
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~SP0256();
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void resetProcessor();
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INT32 getClockSpeed();
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INT32 getClocksPerSample();
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INT32 getSampleRate() { return getClockSpeed(); }
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INT32 tick(INT32);
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inline BOOL isIdle() { return idle; }
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SP0256_Registers registers;
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ROM ivoiceROM;
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void getState(SP0256State *state);
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void setState(SP0256State *state);
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private:
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INT8 readDelta(INT32 numBits);
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INT32 readBits(INT32 numBits);
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INT32 readBitsReverse(INT32 numBits);
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void RTS();
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void SETPAGE(INT32 immed4);
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void LOADALL(INT32 immed4);
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void LOAD_2(INT32 immed4);
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void SETMSB_3(INT32 immed4);
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void LOAD_4(INT32 immed4);
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void SETMSB_5(INT32 immed4);
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void SETMSB_6(INT32 immed4);
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void JMP(INT32 immed4);
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void SETMODE(INT32 immed4);
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void DELTA_9(INT32 immed4);
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void SETMSB_A(INT32 immed4);
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void JSR(INT32 immed4);
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void LOAD_C(INT32 immed4);
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void DELTA_D(INT32 immed4);
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void LOAD_E(INT32 immed4);
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void PAUSE(INT32 immed4);
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void decode();
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static INT32 flipEndian(INT32 value, INT32 bits);
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UINT8 idle;
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UINT8 lrqHigh;
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UINT8 speaking;
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INT16 fifoHead;
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INT16 fifoSize;
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INT32 command;
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INT32 random;
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INT32 page;
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};
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#endif
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