/*******************************************************************************
  Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
 
  (c) Copyright 1996 - 2003 Gary Henderson (gary.henderson@ntlworld.com) and
                            Jerremy Koot (jkoot@snes9x.com)

  (c) Copyright 2002 - 2003 Matthew Kendora and
                            Brad Jorsch (anomie@users.sourceforge.net)
 

                      
  C4 x86 assembler and some C emulation code
  (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com),
                            _Demo_ (_demo_@zsnes.com), and
                            Nach (n-a-c-h@users.sourceforge.net)
                                          
  C4 C++ code
  (c) Copyright 2003 Brad Jorsch

  DSP-1 emulator code
  (c) Copyright 1998 - 2003 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson,
                            John Weidman (jweidman@slip.net),
                            neviksti (neviksti@hotmail.com), and
                            Kris Bleakley (stinkfish@bigpond.com)
 
  DSP-2 emulator code
  (c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and
                     Lord Nightmare (lord_nightmare@users.sourceforge.net

  OBC1 emulator code
  (c) Copyright 2001 - 2003 zsKnight, pagefault (pagefault@zsnes.com)
  Ported from x86 assembler to C by sanmaiwashi

  SPC7110 and RTC C++ emulator code
  (c) Copyright 2002 Matthew Kendora with research by
                     zsKnight, John Weidman, and Dark Force

  S-RTC C emulator code
  (c) Copyright 2001 John Weidman
  
  Super FX x86 assembler emulator code 
  (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault 

  Super FX C emulator code 
  (c) Copyright 1997 - 1999 Ivar and Gary Henderson.



 
  Specific ports contains the works of other authors. See headers in
  individual files.
 
  Snes9x homepage: http://www.snes9x.com
 
  Permission to use, copy, modify and distribute Snes9x in both binary and
  source form, for non-commercial purposes, is hereby granted without fee,
  providing that this license information and copyright notice appear with
  all copies and any derived work.
 
  This software is provided 'as-is', without any express or implied
  warranty. In no event shall the authors be held liable for any damages
  arising from the use of this software.
 
  Snes9x is freeware for PERSONAL USE only. Commercial users should
  seek permission of the copyright holders first. Commercial use includes
  charging money for Snes9x or software derived from Snes9x.
 
  The copyright holders request that bug fixes and improvements to the code
  should be forwarded to them so everyone can benefit from the modifications
  in future versions.
 
  Super NES and Super Nintendo Entertainment System are trademarks of
  Nintendo Co., Limited and its subsidiary companies.
*******************************************************************************/
#include "snes9x.h"
#include "spc700.h"
#include "memmap.h"
#include "display.h"
#include "cpuexec.h"
#include "apu.h"

// SPC700/Sound DSP chips have a 24.57MHz crystal on their PCB.

#ifdef NO_INLINE_SET_GET
uint8 S9xAPUGetByteZ (uint8 address);
uint8 S9xAPUGetByte (uint32 address);
void S9xAPUSetByteZ (uint8, uint8 address);
void S9xAPUSetByte (uint8, uint32 address);

#else
#undef INLINE
#define INLINE SCHERZO_INLINE
#include "apumem.h"
#endif

START_EXTERN_C
extern uint8 Work8;
extern uint16 Work16;
extern uint32 Work32;
extern signed char Int8;
extern short Int16;
extern long Int32;
extern short Int16;
extern uint8 W1;
extern uint8 W2;

END_EXTERN_C

#define OP1 (*(IAPU.PC + 1))
#define OP2 (*(IAPU.PC + 2))

#ifdef SPC700_SHUTDOWN
#define APUShutdown() \
    if (Settings.Shutdown && (IAPU.PC == IAPU.WaitAddress1 || IAPU.PC == IAPU.WaitAddress2)) \
    { \
	if (IAPU.WaitCounter == 0) \
	{ \
	    if (!ICPU.CPUExecuting) \
		APU.Cycles = CPU.Cycles = CPU.NextEvent; \
	    else \
		IAPU.APUExecuting = FALSE; \
	} \
	else \
	if (IAPU.WaitCounter >= 2) \
	    IAPU.WaitCounter = 1; \
	else \
	    IAPU.WaitCounter--; \
    }
#else
#define APUShutdown()
#endif

#define APUSetZN8(b)\
    IAPU._Zero = (b);

#define APUSetZN16(w)\
    IAPU._Zero = ((w) != 0) | ((w) >> 8);

void STOP (char *s)
{
    char buffer[100];

#ifdef DEBUGGER
    S9xAPUOPrint (buffer, IAPU.PC - IAPU.RAM);
#endif

    sprintf (String, "Sound CPU in unknown state executing %s at %04X\n%s\n", s, IAPU.PC - IAPU.RAM, buffer);
    S9xMessage (S9X_ERROR, S9X_APU_STOPPED, String);
    APU.TimerEnabled[0] = APU.TimerEnabled[1] = APU.TimerEnabled[2] = FALSE;
    IAPU.APUExecuting = FALSE;

#ifdef DEBUGGER
    CPU.Flags |= DEBUG_MODE_FLAG;
#else
    S9xExit ();
#endif
}

#define TCALL(n)\
{\
    PushW (IAPU.PC - IAPU.RAM + 1); \
    IAPU.PC = IAPU.RAM + (APU.ExtraRAM [((15 - n) << 1)] + \
	     (APU.ExtraRAM [((15 - n) << 1) + 1] << 8)); \
}

// XXX: HalfCarry - BJ fixed?
#define SBC(a,b)\
Int16 = (short) (a) - (short) (b) + (short) (APUCheckCarry ()) - 1;\
IAPU._Carry = Int16 >= 0;\
if ((((a) ^ (b)) & 0x80) && (((a) ^ (uint8) Int16) & 0x80))\
    APUSetOverflow ();\
else \
    APUClearOverflow (); \
APUSetHalfCarry ();\
if(((a) ^ (b) ^ (uint8) Int16) & 0x10)\
    APUClearHalfCarry ();\
(a) = (uint8) Int16;\
APUSetZN8 ((uint8) Int16);

// XXX: HalfCarry - BJ fixed?
#define ADC(a,b)\
Work16 = (a) + (b) + APUCheckCarry();\
IAPU._Carry = Work16 >= 0x100; \
if (~((a) ^ (b)) & ((b) ^ (uint8) Work16) & 0x80)\
    APUSetOverflow ();\
else \
    APUClearOverflow (); \
APUClearHalfCarry ();\
if(((a) ^ (b) ^ (uint8) Int16) & 0x10)\
    APUSetHalfCarry ();\
(a) = (uint8) Work16;\
APUSetZN8 ((uint8) Work16);

#define CMP(a,b)\
Int16 = (short) (a) - (short) (b);\
IAPU._Carry = Int16 >= 0;\
APUSetZN8 ((uint8) Int16);

#define ASL(b)\
    IAPU._Carry = ((b) & 0x80) != 0; \
    (b) <<= 1;\
    APUSetZN8 (b);
#define LSR(b)\
    IAPU._Carry = (b) & 1;\
    (b) >>= 1;\
    APUSetZN8 (b);
#define ROL(b)\
    Work16 = ((b) << 1) | APUCheckCarry (); \
    IAPU._Carry = Work16 >= 0x100; \
    (b) = (uint8) Work16; \
    APUSetZN8 (b);
#define ROR(b)\
    Work16 = (b) | ((uint16) APUCheckCarry () << 8); \
    IAPU._Carry = (uint8) Work16 & 1; \
    Work16 >>= 1; \
    (b) = (uint8) Work16; \
    APUSetZN8 (b);

#define Push(b)\
    *(IAPU.RAM + 0x100 + APURegisters.S) = b;\
    APURegisters.S--;

#define Pop(b)\
    APURegisters.S++;\
    (b) = *(IAPU.RAM + 0x100 + APURegisters.S);

#ifdef FAST_LSB_WORD_ACCESS
#define PushW(w)\
    *(uint16 *) (IAPU.RAM + 0xff + APURegisters.S) = w;\
    APURegisters.S -= 2;
#define PopW(w)\
    APURegisters.S += 2;\
    w = *(uint16 *) (IAPU.RAM + 0xff + APURegisters.S);
#else
#define PushW(w)\
    *(IAPU.RAM + 0xff + APURegisters.S) = w;\
    *(IAPU.RAM + 0x100 + APURegisters.S) = (w >> 8);\
    APURegisters.S -= 2;
#define PopW(w)\
    APURegisters.S += 2; \
    (w) = *(IAPU.RAM + 0xff + APURegisters.S) + (*(IAPU.RAM + 0x100 + APURegisters.S) << 8);
#endif

#define Relative()\
    Int8 = OP1;\
    Int16 = (int) (IAPU.PC + 2 - IAPU.RAM) + Int8;

#define Relative2()\
    Int8 = OP2;\
    Int16 = (int) (IAPU.PC + 3 - IAPU.RAM) + Int8;

#ifdef FAST_LSB_WORD_ACCESS
#define IndexedXIndirect()\
    IAPU.Address = *(uint16 *) (IAPU.DirectPage + ((OP1 + APURegisters.X) & 0xff));

#define Absolute()\
    IAPU.Address = *(uint16 *) (IAPU.PC + 1);

#define AbsoluteX()\
    IAPU.Address = *(uint16 *) (IAPU.PC + 1) + APURegisters.X;

#define AbsoluteY()\
    IAPU.Address = *(uint16 *) (IAPU.PC + 1) + APURegisters.YA.B.Y;

#define MemBit()\
    IAPU.Address = *(uint16 *) (IAPU.PC + 1);\
    IAPU.Bit = (uint8)(IAPU.Address >> 13);\
    IAPU.Address &= 0x1fff;

#define IndirectIndexedY()\
    IAPU.Address = *(uint16 *) (IAPU.DirectPage + OP1) + APURegisters.YA.B.Y;
#else
#define IndexedXIndirect()\
    IAPU.Address = *(IAPU.DirectPage + ((OP1 + APURegisters.X) & 0xff)) + \
		  (*(IAPU.DirectPage + ((OP1 + APURegisters.X + 1) & 0xff)) << 8);
#define Absolute()\
    IAPU.Address = OP1 + (OP2 << 8);

#define AbsoluteX()\
    IAPU.Address = OP1 + (OP2 << 8) + APURegisters.X;

#define AbsoluteY()\
    IAPU.Address = OP1 + (OP2 << 8) + APURegisters.YA.B.Y;

#define MemBit()\
    IAPU.Address = OP1 + (OP2 << 8);\
    IAPU.Bit = (int8) (IAPU.Address >> 13);\
    IAPU.Address &= 0x1fff;

#define IndirectIndexedY()\
    IAPU.Address = *(IAPU.DirectPage + OP1) + \
		  (*(IAPU.DirectPage + OP1 + 1) << 8) + \
		  APURegisters.YA.B.Y;
#endif

void Apu00 ()
{
// NOP
    IAPU.PC++;
}

void Apu01 () { TCALL (0) }

void Apu11 () { TCALL (1) }

void Apu21 () { TCALL (2) }

void Apu31 () { TCALL (3) }

void Apu41 () { TCALL (4) }

void Apu51 () { TCALL (5) }

void Apu61 () { TCALL (6) }

void Apu71 () { TCALL (7) }

void Apu81 () { TCALL (8) }

void Apu91 () { TCALL (9) }

void ApuA1 () { TCALL (10) }

void ApuB1 () { TCALL (11) }

void ApuC1 () { TCALL (12) }

void ApuD1 () { TCALL (13) }

void ApuE1 () { TCALL (14) }

void ApuF1 () { TCALL (15) }

void Apu3F () // CALL absolute
{
    Absolute ();
    // 0xB6f for Star Fox 2
    PushW (IAPU.PC + 3 - IAPU.RAM);
    IAPU.PC = IAPU.RAM + IAPU.Address;
}

void Apu4F () // PCALL $XX
{
    Work8 = OP1;
    PushW (IAPU.PC + 2 - IAPU.RAM);
    IAPU.PC = IAPU.RAM + 0xff00 + Work8;
}

#define SET(b) \
S9xAPUSetByteZ ((uint8) (S9xAPUGetByteZ (OP1 ) | (1 << (b))), OP1); \
IAPU.PC += 2

void Apu02 ()
{
    SET (0);
}

void Apu22 ()
{
    SET (1);
}

void Apu42 ()
{
    SET (2);
}

void Apu62 ()
{
    SET (3);
}

void Apu82 ()
{
    SET (4);
}

void ApuA2 ()
{
    SET (5);
}

void ApuC2 ()
{
    SET (6);
}

void ApuE2 ()
{
    SET (7);
}

#define CLR(b) \
S9xAPUSetByteZ ((uint8) (S9xAPUGetByteZ (OP1) & ~(1 << (b))), OP1); \
IAPU.PC += 2;

void Apu12 ()
{
    CLR (0);
}

void Apu32 ()
{
    CLR (1);
}

void Apu52 ()
{
    CLR (2);
}

void Apu72 ()
{
    CLR (3);
}

void Apu92 ()
{
    CLR (4);
}

void ApuB2 ()
{
    CLR (5);
}

void ApuD2 ()
{
    CLR (6);
}

void ApuF2 ()
{
    CLR (7);
}

#define BBS(b) \
Work8 = OP1; \
Relative2 (); \
if (S9xAPUGetByteZ (Work8) & (1 << (b))) \
{ \
    IAPU.PC = IAPU.RAM + (uint16) Int16; \
    APU.Cycles += IAPU.TwoCycles; \
} \
else \
    IAPU.PC += 3

void Apu03 ()
{
    BBS (0);
}

void Apu23 ()
{
    BBS (1);
}

void Apu43 ()
{
    BBS (2);
}

void Apu63 ()
{
    BBS (3);
}

void Apu83 ()
{
    BBS (4);
}

void ApuA3 ()
{
    BBS (5);
}

void ApuC3 ()
{
    BBS (6);
}

void ApuE3 ()
{
    BBS (7);
}

#define BBC(b) \
Work8 = OP1; \
Relative2 (); \
if (!(S9xAPUGetByteZ (Work8) & (1 << (b)))) \
{ \
    IAPU.PC = IAPU.RAM + (uint16) Int16; \
    APU.Cycles += IAPU.TwoCycles; \
} \
else \
    IAPU.PC += 3

void Apu13 ()
{
    BBC (0);
}

void Apu33 ()
{
    BBC (1);
}

void Apu53 ()
{
    BBC (2);
}

void Apu73 ()
{
    BBC (3);
}

void Apu93 ()
{
    BBC (4);
}

void ApuB3 ()
{
    BBC (5);
}

void ApuD3 ()
{
    BBC (6);
}

void ApuF3 ()
{
    BBC (7);
}

void Apu04 ()
{
// OR A,dp
    APURegisters.YA.B.A |= S9xAPUGetByteZ (OP1);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu05 ()
{
// OR A,abs
    Absolute ();
    APURegisters.YA.B.A |= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 3;
}

void Apu06 ()
{
// OR A,(X)
    APURegisters.YA.B.A |= S9xAPUGetByteZ (APURegisters.X);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC++;
}

void Apu07 ()
{
// OR A,(dp+X)
    IndexedXIndirect ();
    APURegisters.YA.B.A |= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu08 ()
{
// OR A,#00
    APURegisters.YA.B.A |= OP1;
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu09 ()
{
// OR dp(dest),dp(src)
    Work8 = S9xAPUGetByteZ (OP1);
    Work8 |= S9xAPUGetByteZ (OP2);
    S9xAPUSetByteZ (Work8, OP2);
    APUSetZN8 (Work8);
    IAPU.PC += 3;
}

void Apu14 ()
{
// OR A,dp+X
    APURegisters.YA.B.A |= S9xAPUGetByteZ (OP1 + APURegisters.X);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu15 ()
{
// OR A,abs+X
    AbsoluteX ();
    APURegisters.YA.B.A |= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 3;
}

void Apu16 ()
{
// OR A,abs+Y
    AbsoluteY ();
    APURegisters.YA.B.A |= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 3;
}

void Apu17 ()
{
// OR A,(dp)+Y
    IndirectIndexedY ();
    APURegisters.YA.B.A |= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu18 ()
{
// OR dp,#00
    Work8 = OP1;
    Work8 |= S9xAPUGetByteZ (OP2);
    S9xAPUSetByteZ (Work8, OP2);
    APUSetZN8 (Work8);
    IAPU.PC += 3;
}

void Apu19 ()
{
// OR (X),(Y)
    Work8 = S9xAPUGetByteZ (APURegisters.X) | S9xAPUGetByteZ (APURegisters.YA.B.Y);
    APUSetZN8 (Work8);
    S9xAPUSetByteZ (Work8, APURegisters.X);
    IAPU.PC++;
}

void Apu0A ()
{
// OR1 C,membit
    MemBit ();
    if (!APUCheckCarry ())
    {
	if (S9xAPUGetByte (IAPU.Address) & (1 << IAPU.Bit))
	    APUSetCarry ();
    }
    IAPU.PC += 3;
}

void Apu2A ()
{
// OR1 C,not membit
    MemBit ();
    if (!APUCheckCarry ())
    {
	if (!(S9xAPUGetByte (IAPU.Address) & (1 << IAPU.Bit)))
	    APUSetCarry ();
    }
    IAPU.PC += 3;
}

void Apu4A ()
{
// AND1 C,membit
    MemBit ();
    if (APUCheckCarry ())
    {
	if (!(S9xAPUGetByte (IAPU.Address) & (1 << IAPU.Bit)))
	    APUClearCarry ();
    }
    IAPU.PC += 3;
}

void Apu6A ()
{
// AND1 C, not membit
    MemBit ();
    if (APUCheckCarry ())
    {
	if ((S9xAPUGetByte (IAPU.Address) & (1 << IAPU.Bit)))
	    APUClearCarry ();
    }
    IAPU.PC += 3;
}

void Apu8A ()
{
// EOR1 C, membit
    MemBit ();
    if (APUCheckCarry ())
    {
	if (S9xAPUGetByte (IAPU.Address) & (1 << IAPU.Bit))
	    APUClearCarry ();
    }
    else
    {
	if (S9xAPUGetByte (IAPU.Address) & (1 << IAPU.Bit))
	    APUSetCarry ();
    }
    IAPU.PC += 3;
}

void ApuAA ()
{
// MOV1 C,membit
    MemBit ();
    if (S9xAPUGetByte (IAPU.Address) & (1 << IAPU.Bit))
	APUSetCarry ();
    else
	APUClearCarry ();
    IAPU.PC += 3;
}

void ApuCA ()
{
// MOV1 membit,C
    MemBit ();
    if (APUCheckCarry ())
    {
	S9xAPUSetByte (S9xAPUGetByte (IAPU.Address) | (1 << IAPU.Bit), IAPU.Address);
    }
    else
    {
	S9xAPUSetByte (S9xAPUGetByte (IAPU.Address) & ~(1 << IAPU.Bit), IAPU.Address);
    }
    IAPU.PC += 3;
}

void ApuEA ()
{
// NOT1 membit
    MemBit ();
    S9xAPUSetByte (S9xAPUGetByte (IAPU.Address) ^ (1 << IAPU.Bit), IAPU.Address);
    IAPU.PC += 3;
}

void Apu0B ()
{
// ASL dp
    Work8 = S9xAPUGetByteZ (OP1);
    ASL (Work8);
    S9xAPUSetByteZ (Work8, OP1);
    IAPU.PC += 2;
}

void Apu0C ()
{
// ASL abs
    Absolute ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    ASL (Work8);
    S9xAPUSetByte (Work8, IAPU.Address);
    IAPU.PC += 3;
}

void Apu1B ()
{
// ASL dp+X
    Work8 = S9xAPUGetByteZ (OP1 + APURegisters.X);
    ASL (Work8);
    S9xAPUSetByteZ (Work8, OP1 + APURegisters.X);
    IAPU.PC += 2;
}

void Apu1C ()
{
// ASL A
    ASL (APURegisters.YA.B.A);
    IAPU.PC++;
}

void Apu0D ()
{
// PUSH PSW
    S9xAPUPackStatus ();
    Push (APURegisters.P);
    IAPU.PC++;
}

void Apu2D ()
{
// PUSH A
    Push (APURegisters.YA.B.A);
    IAPU.PC++;
}

void Apu4D ()
{
// PUSH X
    Push (APURegisters.X);
    IAPU.PC++;
}

void Apu6D ()
{
// PUSH Y
    Push (APURegisters.YA.B.Y);
    IAPU.PC++;
}

void Apu8E ()
{
// POP PSW
    Pop (APURegisters.P);
    S9xAPUUnpackStatus ();
    if (APUCheckDirectPage ())
	IAPU.DirectPage = IAPU.RAM + 0x100;
    else
	IAPU.DirectPage = IAPU.RAM;
    IAPU.PC++;
}

void ApuAE ()
{
// POP A
    Pop (APURegisters.YA.B.A);
    IAPU.PC++;
}

void ApuCE ()
{
// POP X
    Pop (APURegisters.X);
    IAPU.PC++;
}

void ApuEE ()
{
// POP Y
    Pop (APURegisters.YA.B.Y);
    IAPU.PC++;
}

void Apu0E ()
{
// TSET1 abs
    Absolute ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    S9xAPUSetByte (Work8 | APURegisters.YA.B.A, IAPU.Address);
    Work8 &= APURegisters.YA.B.A;
    APUSetZN8 (Work8);
    IAPU.PC += 3;
}

void Apu4E ()
{
// TCLR1 abs
    Absolute ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    S9xAPUSetByte (Work8 & ~APURegisters.YA.B.A, IAPU.Address);
    Work8 &= APURegisters.YA.B.A;
    APUSetZN8 (Work8);
    IAPU.PC += 3;
}

void Apu0F ()
{
// BRK

#if 0
    STOP ("BRK");
#else
    PushW (IAPU.PC + 1 - IAPU.RAM);
    S9xAPUPackStatus ();
    Push (APURegisters.P);
    APUSetBreak ();
    APUClearInterrupt ();
// XXX:Where is the BRK vector ???
    IAPU.PC = IAPU.RAM + APU.ExtraRAM[0x20] + (APU.ExtraRAM[0x21] << 8);
#endif
}

void ApuEF ()
{
// SLEEP
    // XXX: sleep
    // STOP ("SLEEP");
    IAPU.APUExecuting = FALSE;
    IAPU.PC++;
}

void ApuFF ()
{
// STOP
    // STOP ("STOP");
    IAPU.APUExecuting = FALSE;
    IAPU.PC++;
}

void Apu10 ()
{
// BPL
    Relative ();
    if (!APUCheckNegative ())
    {
	IAPU.PC = IAPU.RAM + (uint16) Int16;
	APU.Cycles += IAPU.TwoCycles;
	APUShutdown ();
    }
    else
	IAPU.PC += 2;
}

void Apu30 ()
{
// BMI
    Relative ();
    if (APUCheckNegative ())
    {
	IAPU.PC = IAPU.RAM + (uint16) Int16;
	APU.Cycles += IAPU.TwoCycles;
	APUShutdown ();
    }
    else
	IAPU.PC += 2;
}

void Apu90 ()
{
// BCC
    Relative ();
    if (!APUCheckCarry ())
    {
	IAPU.PC = IAPU.RAM + (uint16) Int16;
	APU.Cycles += IAPU.TwoCycles;
	APUShutdown ();
    }
    else
	IAPU.PC += 2;
}

void ApuB0 ()
{
// BCS
    Relative ();
    if (APUCheckCarry ())
    {
	IAPU.PC = IAPU.RAM + (uint16) Int16;
	APU.Cycles += IAPU.TwoCycles;
	APUShutdown ();
    }
    else
	IAPU.PC += 2;
}

void ApuD0 ()
{
// BNE
    Relative ();
    if (!APUCheckZero ())
    {
	IAPU.PC = IAPU.RAM + (uint16) Int16;
	APU.Cycles += IAPU.TwoCycles;
	APUShutdown ();
    }
    else
	IAPU.PC += 2;
}

void ApuF0 ()
{
// BEQ
    Relative ();
    if (APUCheckZero ())
    {
	IAPU.PC = IAPU.RAM + (uint16) Int16;
	APU.Cycles += IAPU.TwoCycles;
	APUShutdown ();
    }
    else
	IAPU.PC += 2;
}

void Apu50 ()
{
// BVC
    Relative ();
    if (!APUCheckOverflow ())
    {
	IAPU.PC = IAPU.RAM + (uint16) Int16;
	APU.Cycles += IAPU.TwoCycles;
    }
    else
	IAPU.PC += 2;
}

void Apu70 ()
{
// BVS
    Relative ();
    if (APUCheckOverflow ())
    {
	IAPU.PC = IAPU.RAM + (uint16) Int16;
	APU.Cycles += IAPU.TwoCycles;
    }
    else
	IAPU.PC += 2;
}

void Apu2F ()
{
// BRA
    Relative ();
    IAPU.PC = IAPU.RAM + (uint16) Int16;
}

void Apu80 ()
{
// SETC
    APUSetCarry ();
    IAPU.PC++;
}

void ApuED ()
{
// NOTC
    IAPU._Carry ^= 1;
    IAPU.PC++;
}

void Apu40 ()
{
// SETP
    APUSetDirectPage ();
    IAPU.DirectPage = IAPU.RAM + 0x100;
    IAPU.PC++;
}

void Apu1A ()
{
// DECW dp
    Work16 = S9xAPUGetByteZ (OP1) + (S9xAPUGetByteZ (OP1 + 1) << 8);
    Work16--;
    S9xAPUSetByteZ ((uint8) Work16, OP1);
    S9xAPUSetByteZ (Work16 >> 8, OP1 + 1);
    APUSetZN16 (Work16);
    IAPU.PC += 2;
}

void Apu5A ()
{
// CMPW YA,dp
    Work16 = S9xAPUGetByteZ (OP1) + (S9xAPUGetByteZ (OP1 + 1) << 8);
    Int32 = (long) APURegisters.YA.W - (long) Work16;
    IAPU._Carry = Int32 >= 0;
    APUSetZN16 ((uint16) Int32);
    IAPU.PC += 2;
}

void Apu3A ()
{
// INCW dp
    Work16 = S9xAPUGetByteZ (OP1) + (S9xAPUGetByteZ (OP1 + 1) << 8);
    Work16++;
    S9xAPUSetByteZ ((uint8) Work16, OP1);
    S9xAPUSetByteZ (Work16 >> 8, OP1 + 1);
    APUSetZN16 (Work16);
    IAPU.PC += 2;
}

// XXX: HalfCarry - BJ Fixed? Or is it between bits 7 and 8 for ADDW/SUBW?
void Apu7A ()
{
// ADDW YA,dp
    Work16 = S9xAPUGetByteZ (OP1) + (S9xAPUGetByteZ (OP1 + 1) << 8);
    Work32 = (uint32) APURegisters.YA.W + Work16;
    IAPU._Carry = Work32 >= 0x10000;
    if (~(APURegisters.YA.W ^ Work16) & (Work16 ^ (uint16) Work32) & 0x8000)
	APUSetOverflow ();
    else
	APUClearOverflow ();
    APUClearHalfCarry ();
    if((APURegisters.YA.W ^ Work16 ^ (uint16) Work32) & 0x10)
        APUSetHalfCarry ();
    APURegisters.YA.W = (uint16) Work32;
    APUSetZN16 (APURegisters.YA.W);
    IAPU.PC += 2;
}

// XXX: BJ: i think the old HalfCarry behavior was wrong...
// XXX: Or is it between bits 7 and 8 for ADDW/SUBW?
void Apu9A ()
{
// SUBW YA,dp
    Work16 = S9xAPUGetByteZ (OP1) + (S9xAPUGetByteZ (OP1 + 1) << 8);
    Int32 = (long) APURegisters.YA.W - (long) Work16;
    APUClearHalfCarry ();
    IAPU._Carry = Int32 >= 0;
    if (((APURegisters.YA.W ^ Work16) & 0x8000) &&
	    ((APURegisters.YA.W ^ (uint16) Int32) & 0x8000))
	APUSetOverflow ();
    else
	APUClearOverflow ();
    if (((APURegisters.YA.W ^ Work16) & 0x0080) &&
	    ((APURegisters.YA.W ^ (uint16) Int32) & 0x0080))
	APUSetHalfCarry ();
    APUSetHalfCarry ();
    if((APURegisters.YA.W ^ Work16 ^ (uint16) Work32) & 0x10)
        APUClearHalfCarry ();
    APURegisters.YA.W = (uint16) Int32;
    APUSetZN16 (APURegisters.YA.W);
    IAPU.PC += 2;
}

void ApuBA ()
{
// MOVW YA,dp
    APURegisters.YA.B.A = S9xAPUGetByteZ (OP1);
    APURegisters.YA.B.Y = S9xAPUGetByteZ (OP1 + 1);
    APUSetZN16 (APURegisters.YA.W);
    IAPU.PC += 2;
}

void ApuDA ()
{
// MOVW dp,YA
    S9xAPUSetByteZ (APURegisters.YA.B.A, OP1);
    S9xAPUSetByteZ (APURegisters.YA.B.Y, OP1 + 1);
    IAPU.PC += 2;
}

void Apu64 ()
{
// CMP A,dp
    Work8 = S9xAPUGetByteZ (OP1);
    CMP (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void Apu65 ()
{
// CMP A,abs
    Absolute ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    CMP (APURegisters.YA.B.A, Work8);
    IAPU.PC += 3;
}

void Apu66 ()
{
// CMP A,(X)
    Work8 = S9xAPUGetByteZ (APURegisters.X);
    CMP (APURegisters.YA.B.A, Work8);
    IAPU.PC++;
}

void Apu67 ()
{
// CMP A,(dp+X)
    IndexedXIndirect ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    CMP (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void Apu68 ()
{
// CMP A,#00
    Work8 = OP1;
    CMP (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void Apu69 ()
{
// CMP dp(dest), dp(src)
    W1 = S9xAPUGetByteZ (OP1);
    Work8 = S9xAPUGetByteZ (OP2);
    CMP (Work8, W1);
    IAPU.PC += 3;
}

void Apu74 ()
{
// CMP A, dp+X
    Work8 = S9xAPUGetByteZ (OP1 + APURegisters.X);
    CMP (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void Apu75 ()
{
// CMP A,abs+X
    AbsoluteX ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    CMP (APURegisters.YA.B.A, Work8);
    IAPU.PC += 3;
}

void Apu76 ()
{
// CMP A, abs+Y
    AbsoluteY ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    CMP (APURegisters.YA.B.A, Work8);
    IAPU.PC += 3;
}

void Apu77 ()
{
// CMP A,(dp)+Y
    IndirectIndexedY ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    CMP (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void Apu78 ()
{
// CMP dp,#00
    Work8 = OP1;
    W1 = S9xAPUGetByteZ (OP2);
    CMP (W1, Work8);
    IAPU.PC += 3;
}

void Apu79 ()
{
// CMP (X),(Y)
    W1 = S9xAPUGetByteZ (APURegisters.X);
    Work8 = S9xAPUGetByteZ (APURegisters.YA.B.Y);
    CMP (W1, Work8);
    IAPU.PC++;
}

void Apu1E ()
{
// CMP X,abs
    Absolute ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    CMP (APURegisters.X, Work8);
    IAPU.PC += 3;
}

void Apu3E ()
{
// CMP X,dp
    Work8 = S9xAPUGetByteZ (OP1);
    CMP (APURegisters.X, Work8);
    IAPU.PC += 2;
}

void ApuC8 ()
{
// CMP X,#00
    CMP (APURegisters.X, OP1);
    IAPU.PC += 2;
}

void Apu5E ()
{
// CMP Y,abs
    Absolute ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    CMP (APURegisters.YA.B.Y, Work8);
    IAPU.PC += 3;
}

void Apu7E ()
{
// CMP Y,dp
    Work8 = S9xAPUGetByteZ (OP1);
    CMP (APURegisters.YA.B.Y, Work8);
    IAPU.PC += 2;
}

void ApuAD ()
{
// CMP Y,#00
    Work8 = OP1;
    CMP (APURegisters.YA.B.Y, Work8);
    IAPU.PC += 2;
}

void Apu1F ()
{
// JMP (abs+X)
    Absolute ();
    IAPU.PC = IAPU.RAM + S9xAPUGetByte (IAPU.Address + APURegisters.X) +
	(S9xAPUGetByte (IAPU.Address + APURegisters.X + 1) << 8);
// XXX: HERE:
    // APU.Flags |= TRACE_FLAG;
}

void Apu5F ()
{
// JMP abs
    Absolute ();
    IAPU.PC = IAPU.RAM + IAPU.Address;
}

void Apu20 ()
{
// CLRP
    APUClearDirectPage ();
    IAPU.DirectPage = IAPU.RAM;
    IAPU.PC++;
}

void Apu60 ()
{
// CLRC
    APUClearCarry ();
    IAPU.PC++;
}

void ApuE0 ()
{
// CLRV
    APUClearHalfCarry ();
    APUClearOverflow ();
    IAPU.PC++;
}

void Apu24 ()
{
// AND A,dp
    APURegisters.YA.B.A &= S9xAPUGetByteZ (OP1);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu25 ()
{
// AND A,abs
    Absolute ();
    APURegisters.YA.B.A &= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 3;
}

void Apu26 ()
{
// AND A,(X)
    APURegisters.YA.B.A &= S9xAPUGetByteZ (APURegisters.X);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC++;
}

void Apu27 ()
{
// AND A,(dp+X)
    IndexedXIndirect ();
    APURegisters.YA.B.A &= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu28 ()
{
// AND A,#00
    APURegisters.YA.B.A &= OP1;
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu29 ()
{
// AND dp(dest),dp(src)
    Work8 = S9xAPUGetByteZ (OP1);
    Work8 &= S9xAPUGetByteZ (OP2);
    S9xAPUSetByteZ (Work8, OP2);
    APUSetZN8 (Work8);
    IAPU.PC += 3;
}

void Apu34 ()
{
// AND A,dp+X
    APURegisters.YA.B.A &= S9xAPUGetByteZ (OP1 + APURegisters.X);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu35 ()
{
// AND A,abs+X
    AbsoluteX ();
    APURegisters.YA.B.A &= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 3;
}

void Apu36 ()
{
// AND A,abs+Y
    AbsoluteY ();
    APURegisters.YA.B.A &= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 3;
}

void Apu37 ()
{
// AND A,(dp)+Y
    IndirectIndexedY ();
    APURegisters.YA.B.A &= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu38 ()
{
// AND dp,#00
    Work8 = OP1;
    Work8 &= S9xAPUGetByteZ (OP2);
    S9xAPUSetByteZ (Work8, OP2);
    APUSetZN8 (Work8);
    IAPU.PC += 3;
}

void Apu39 ()
{
// AND (X),(Y)
    Work8 = S9xAPUGetByteZ (APURegisters.X) & S9xAPUGetByteZ (APURegisters.YA.B.Y);
    APUSetZN8 (Work8);
    S9xAPUSetByteZ (Work8, APURegisters.X);
    IAPU.PC++;
}

void Apu2B ()
{
// ROL dp
    Work8 = S9xAPUGetByteZ (OP1);
    ROL (Work8);
    S9xAPUSetByteZ (Work8, OP1);
    IAPU.PC += 2;
}

void Apu2C ()
{
// ROL abs
    Absolute ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    ROL (Work8);
    S9xAPUSetByte (Work8, IAPU.Address);
    IAPU.PC += 3;
}

void Apu3B ()
{
// ROL dp+X
    Work8 = S9xAPUGetByteZ (OP1 + APURegisters.X);
    ROL (Work8);
    S9xAPUSetByteZ (Work8, OP1 + APURegisters.X);
    IAPU.PC += 2;
}

void Apu3C ()
{
// ROL A
    ROL (APURegisters.YA.B.A);
    IAPU.PC++;
}

void Apu2E ()
{
// CBNE dp,rel
    Work8 = OP1;
    Relative2 ();
    
    if (S9xAPUGetByteZ (Work8) != APURegisters.YA.B.A)
    {
	IAPU.PC = IAPU.RAM + (uint16) Int16;
	APU.Cycles += IAPU.TwoCycles;
	APUShutdown ();
    }
    else
	IAPU.PC += 3;
}

void ApuDE ()
{
// CBNE dp+X,rel
    Work8 = OP1 + APURegisters.X;
    Relative2 ();

    if (S9xAPUGetByteZ (Work8) != APURegisters.YA.B.A)
    {
	IAPU.PC = IAPU.RAM + (uint16) Int16;
	APU.Cycles += IAPU.TwoCycles;
	APUShutdown ();
    }
    else
	IAPU.PC += 3;
}

void Apu3D ()
{
// INC X
    APURegisters.X++;
    APUSetZN8 (APURegisters.X);

#ifdef SPC700_SHUTDOWN
    IAPU.WaitCounter++;
#endif

    IAPU.PC++;
}

void ApuFC ()
{
// INC Y
    APURegisters.YA.B.Y++;
    APUSetZN8 (APURegisters.YA.B.Y);

#ifdef SPC700_SHUTDOWN
    IAPU.WaitCounter++;
#endif

    IAPU.PC++;
}

void Apu1D ()
{
// DEC X
    APURegisters.X--;
    APUSetZN8 (APURegisters.X);

#ifdef SPC700_SHUTDOWN
    IAPU.WaitCounter++;
#endif

    IAPU.PC++;
}

void ApuDC ()
{
// DEC Y
    APURegisters.YA.B.Y--;
    APUSetZN8 (APURegisters.YA.B.Y);

#ifdef SPC700_SHUTDOWN
    IAPU.WaitCounter++;
#endif

    IAPU.PC++;
}

void ApuAB ()
{
// INC dp
    Work8 = S9xAPUGetByteZ (OP1) + 1;
    S9xAPUSetByteZ (Work8, OP1);
    APUSetZN8 (Work8);

#ifdef SPC700_SHUTDOWN
    IAPU.WaitCounter++;
#endif

    IAPU.PC += 2;
}

void ApuAC ()
{
// INC abs
    Absolute ();
    Work8 = S9xAPUGetByte (IAPU.Address) + 1;
    S9xAPUSetByte (Work8, IAPU.Address);
    APUSetZN8 (Work8);

#ifdef SPC700_SHUTDOWN
    IAPU.WaitCounter++;
#endif

    IAPU.PC += 3;
}

void ApuBB ()
{
// INC dp+X
    Work8 = S9xAPUGetByteZ (OP1 + APURegisters.X) + 1;
    S9xAPUSetByteZ (Work8, OP1 + APURegisters.X);
    APUSetZN8 (Work8);

#ifdef SPC700_SHUTDOWN
    IAPU.WaitCounter++;
#endif

    IAPU.PC += 2;
}

void ApuBC ()
{
// INC A
    APURegisters.YA.B.A++;
    APUSetZN8 (APURegisters.YA.B.A);

#ifdef SPC700_SHUTDOWN
    IAPU.WaitCounter++;
#endif

    IAPU.PC++;
}

void Apu8B ()
{
// DEC dp
    Work8 = S9xAPUGetByteZ (OP1) - 1;
    S9xAPUSetByteZ (Work8, OP1);
    APUSetZN8 (Work8);

#ifdef SPC700_SHUTDOWN
    IAPU.WaitCounter++;
#endif

    IAPU.PC += 2;
}

void Apu8C ()
{
// DEC abs
    Absolute ();
    Work8 = S9xAPUGetByte (IAPU.Address) - 1;
    S9xAPUSetByte (Work8, IAPU.Address);
    APUSetZN8 (Work8);

#ifdef SPC700_SHUTDOWN
    IAPU.WaitCounter++;
#endif

    IAPU.PC += 3;
}

void Apu9B ()
{
// DEC dp+X
    Work8 = S9xAPUGetByteZ (OP1 + APURegisters.X) - 1;
    S9xAPUSetByteZ (Work8, OP1 + APURegisters.X);
    APUSetZN8 (Work8);

#ifdef SPC700_SHUTDOWN
    IAPU.WaitCounter++;
#endif

    IAPU.PC += 2;
}

void Apu9C ()
{
// DEC A
    APURegisters.YA.B.A--;
    APUSetZN8 (APURegisters.YA.B.A);

#ifdef SPC700_SHUTDOWN
    IAPU.WaitCounter++;
#endif

    IAPU.PC++;
}

void Apu44 ()
{
// EOR A,dp
    APURegisters.YA.B.A ^= S9xAPUGetByteZ (OP1);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu45 ()
{
// EOR A,abs
    Absolute ();
    APURegisters.YA.B.A ^= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 3;
}

void Apu46 ()
{
// EOR A,(X)
    APURegisters.YA.B.A ^= S9xAPUGetByteZ (APURegisters.X);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC++;
}

void Apu47 ()
{
// EOR A,(dp+X)
    IndexedXIndirect ();
    APURegisters.YA.B.A ^= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu48 ()
{
// EOR A,#00
    APURegisters.YA.B.A ^= OP1;
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu49 ()
{
// EOR dp(dest),dp(src)
    Work8 = S9xAPUGetByteZ (OP1);
    Work8 ^= S9xAPUGetByteZ (OP2);
    S9xAPUSetByteZ (Work8, OP2);
    APUSetZN8 (Work8);
    IAPU.PC += 3;
}

void Apu54 ()
{
// EOR A,dp+X
    APURegisters.YA.B.A ^= S9xAPUGetByteZ (OP1 + APURegisters.X);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu55 ()
{
// EOR A,abs+X
    AbsoluteX ();
    APURegisters.YA.B.A ^= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 3;
}

void Apu56 ()
{
// EOR A,abs+Y
    AbsoluteY ();
    APURegisters.YA.B.A ^= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 3;
}

void Apu57 ()
{
// EOR A,(dp)+Y
    IndirectIndexedY ();
    APURegisters.YA.B.A ^= S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void Apu58 ()
{
// EOR dp,#00
    Work8 = OP1;
    Work8 ^= S9xAPUGetByteZ (OP2);
    S9xAPUSetByteZ (Work8, OP2);
    APUSetZN8 (Work8);
    IAPU.PC += 3;
}

void Apu59 ()
{
// EOR (X),(Y)
    Work8 = S9xAPUGetByteZ (APURegisters.X) ^ S9xAPUGetByteZ (APURegisters.YA.B.Y);
    APUSetZN8 (Work8);
    S9xAPUSetByteZ (Work8, APURegisters.X);
    IAPU.PC++;
}

void Apu4B ()
{
// LSR dp
    Work8 = S9xAPUGetByteZ (OP1);
    LSR (Work8);
    S9xAPUSetByteZ (Work8, OP1);
    IAPU.PC += 2;
}

void Apu4C ()
{
// LSR abs
    Absolute ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    LSR (Work8);
    S9xAPUSetByte (Work8, IAPU.Address);
    IAPU.PC += 3;
}

void Apu5B ()
{
// LSR dp+X
    Work8 = S9xAPUGetByteZ (OP1 + APURegisters.X);
    LSR (Work8);
    S9xAPUSetByteZ (Work8, OP1 + APURegisters.X);
    IAPU.PC += 2;
}

void Apu5C ()
{
// LSR A
    LSR (APURegisters.YA.B.A);
    IAPU.PC++;
}

void Apu7D ()
{
// MOV A,X
    APURegisters.YA.B.A = APURegisters.X;
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC++;
}

void ApuDD ()
{
// MOV A,Y
    APURegisters.YA.B.A = APURegisters.YA.B.Y;
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC++;
}

void Apu5D ()
{
// MOV X,A
    APURegisters.X = APURegisters.YA.B.A;
    APUSetZN8 (APURegisters.X);
    IAPU.PC++;
}

void ApuFD ()
{
// MOV Y,A
    APURegisters.YA.B.Y = APURegisters.YA.B.A;
    APUSetZN8 (APURegisters.YA.B.Y);
    IAPU.PC++;
}

void Apu9D ()
{
//MOV X,SP
    APURegisters.X = APURegisters.S;
    APUSetZN8 (APURegisters.X);
    IAPU.PC++;
}

void ApuBD ()
{
// MOV SP,X
    APURegisters.S = APURegisters.X;
    IAPU.PC++;
}

void Apu6B ()
{
// ROR dp
    Work8 = S9xAPUGetByteZ (OP1);
    ROR (Work8);
    S9xAPUSetByteZ (Work8, OP1);
    IAPU.PC += 2;
}

void Apu6C ()
{
// ROR abs
    Absolute ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    ROR (Work8);
    S9xAPUSetByte (Work8, IAPU.Address);
    IAPU.PC += 3;
}

void Apu7B ()
{
// ROR dp+X
    Work8 = S9xAPUGetByteZ (OP1 + APURegisters.X);
    ROR (Work8);
    S9xAPUSetByteZ (Work8, OP1 + APURegisters.X);
    IAPU.PC += 2;
}

void Apu7C ()
{
// ROR A
    ROR (APURegisters.YA.B.A);
    IAPU.PC++;
}

void Apu6E ()
{
// DBNZ dp,rel
    Work8 = OP1;
    Relative2 ();
    W1 = S9xAPUGetByteZ (Work8) - 1;
    S9xAPUSetByteZ (W1, Work8);
    if (W1 != 0)
    {
	IAPU.PC = IAPU.RAM + (uint16) Int16;
	APU.Cycles += IAPU.TwoCycles;
    }
    else
	IAPU.PC += 3;
}

void ApuFE ()
{
// DBNZ Y,rel
    Relative ();
    APURegisters.YA.B.Y--;
    if (APURegisters.YA.B.Y != 0)
    {
	IAPU.PC = IAPU.RAM + (uint16) Int16;
	APU.Cycles += IAPU.TwoCycles;
    }
    else
	IAPU.PC += 2;
}

void Apu6F ()
{
// RET
    PopW (APURegisters.PC);
    IAPU.PC = IAPU.RAM + APURegisters.PC;
}

void Apu7F ()
{
// RETI
    // STOP ("RETI");
    Pop (APURegisters.P);
    S9xAPUUnpackStatus ();
    PopW (APURegisters.PC);
    IAPU.PC = IAPU.RAM + APURegisters.PC;
}

void Apu84 ()
{
// ADC A,dp
    Work8 = S9xAPUGetByteZ (OP1);
    ADC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void Apu85 ()
{
// ADC A, abs
    Absolute ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    ADC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 3;
}

void Apu86 ()
{
// ADC A,(X)
    Work8 = S9xAPUGetByteZ (APURegisters.X);
    ADC (APURegisters.YA.B.A, Work8);
    IAPU.PC++;
}

void Apu87 ()
{
// ADC A,(dp+X)
    IndexedXIndirect ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    ADC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void Apu88 ()
{
// ADC A,#00
    Work8 = OP1;
    ADC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void Apu89 ()
{
// ADC dp(dest),dp(src)
    Work8 = S9xAPUGetByteZ (OP1);
    W1 = S9xAPUGetByteZ (OP2);
    ADC (W1, Work8);
    S9xAPUSetByteZ (W1, OP2);
    IAPU.PC += 3;
}

void Apu94 ()
{
// ADC A,dp+X
    Work8 = S9xAPUGetByteZ (OP1 + APURegisters.X);
    ADC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void Apu95 ()
{
// ADC A, abs+X
    AbsoluteX ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    ADC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 3;
}

void Apu96 ()
{
// ADC A, abs+Y
    AbsoluteY ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    ADC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 3;
}

void Apu97 ()
{
// ADC A, (dp)+Y
    IndirectIndexedY ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    ADC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void Apu98 ()
{
// ADC dp,#00
    Work8 = OP1;
    W1 = S9xAPUGetByteZ (OP2);
    ADC (W1, Work8);
    S9xAPUSetByteZ (W1, OP2);
    IAPU.PC += 3;
}

void Apu99 ()
{
// ADC (X),(Y)
    W1 = S9xAPUGetByteZ (APURegisters.X);
    Work8 = S9xAPUGetByteZ (APURegisters.YA.B.Y);
    ADC (W1, Work8);
    S9xAPUSetByteZ (W1, APURegisters.X);
    IAPU.PC++;
}

void Apu8D ()
{
// MOV Y,#00
    APURegisters.YA.B.Y = OP1;
    APUSetZN8 (APURegisters.YA.B.Y);
    IAPU.PC += 2;
}

void Apu8F ()
{
// MOV dp,#00
    Work8 = OP1;
    S9xAPUSetByteZ (Work8, OP2);
    IAPU.PC += 3;
}

void Apu9E ()
{
// DIV YA,X
    if (APURegisters.X == 0)
    {
	APUSetOverflow ();
	APURegisters.YA.B.Y = 0xff;
	APURegisters.YA.B.A = 0xff;
    }
    else
    {
	APUClearOverflow ();
	Work8 = APURegisters.YA.W / APURegisters.X;
	APURegisters.YA.B.Y = APURegisters.YA.W % APURegisters.X;
	APURegisters.YA.B.A = Work8;
    }
// XXX How should Overflow, Half Carry, Zero and Negative flags be set??
    // APUSetZN16 (APURegisters.YA.W);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC++;
}

void Apu9F ()
{
// XCN A
    APURegisters.YA.B.A = (APURegisters.YA.B.A >> 4) | (APURegisters.YA.B.A << 4);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC++;
}

void ApuA4 ()
{
// SBC A, dp
    Work8 = S9xAPUGetByteZ (OP1);
    SBC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void ApuA5 ()
{
// SBC A, abs
    Absolute ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    SBC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 3;
}

void ApuA6 ()
{
// SBC A, (X)
    Work8 = S9xAPUGetByteZ (APURegisters.X);
    SBC (APURegisters.YA.B.A, Work8);
    IAPU.PC++;
}

void ApuA7 ()
{
// SBC A,(dp+X)
    IndexedXIndirect ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    SBC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void ApuA8 ()
{
// SBC A,#00
    Work8 = OP1;
    SBC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void ApuA9 ()
{
// SBC dp(dest), dp(src)
    Work8 = S9xAPUGetByteZ (OP1);
    W1 = S9xAPUGetByteZ (OP2);
    SBC (W1, Work8);
    S9xAPUSetByteZ (W1, OP2);
    IAPU.PC += 3;
}

void ApuB4 ()
{
// SBC A, dp+X
    Work8 = S9xAPUGetByteZ (OP1 + APURegisters.X);
    SBC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void ApuB5 ()
{
// SBC A,abs+X
    AbsoluteX ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    SBC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 3;
}

void ApuB6 ()
{
// SBC A,abs+Y
    AbsoluteY ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    SBC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 3;
}

void ApuB7 ()
{
// SBC A,(dp)+Y
    IndirectIndexedY ();
    Work8 = S9xAPUGetByte (IAPU.Address);
    SBC (APURegisters.YA.B.A, Work8);
    IAPU.PC += 2;
}

void ApuB8 ()
{
// SBC dp,#00
    Work8 = OP1;
    W1 = S9xAPUGetByteZ (OP2);
    SBC (W1, Work8);
    S9xAPUSetByteZ (W1, OP2);
    IAPU.PC += 3;
}

void ApuB9 ()
{
// SBC (X),(Y)
    W1 = S9xAPUGetByteZ (APURegisters.X);
    Work8 = S9xAPUGetByteZ (APURegisters.YA.B.Y);
    SBC (W1, Work8);
    S9xAPUSetByteZ (W1, APURegisters.X);
    IAPU.PC++;
}

void ApuAF ()
{
// MOV (X)+, A
    S9xAPUSetByteZ (APURegisters.YA.B.A, APURegisters.X++);
    IAPU.PC++;
}

void ApuBE ()
{
// DAS
    if ((APURegisters.YA.B.A & 0x0f) > 9 || !APUCheckHalfCarry())
    {
        APURegisters.YA.B.A -= 6;
    }
    if (APURegisters.YA.B.A > 0x9f || !IAPU._Carry)
    {
	APURegisters.YA.B.A -= 0x60;
	APUClearCarry ();
    }
    else { APUSetCarry (); }
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC++;
}

void ApuBF ()
{
// MOV A,(X)+
    APURegisters.YA.B.A = S9xAPUGetByteZ (APURegisters.X++);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC++;
}

void ApuC0 ()
{
// DI
    APUClearInterrupt ();
    IAPU.PC++;
}

void ApuA0 ()
{
// EI
    APUSetInterrupt ();
    IAPU.PC++;
}

void ApuC4 ()
{
// MOV dp,A
    S9xAPUSetByteZ (APURegisters.YA.B.A, OP1);
    IAPU.PC += 2;
}

void ApuC5 ()
{
// MOV abs,A
    Absolute ();
    S9xAPUSetByte (APURegisters.YA.B.A, IAPU.Address);
    IAPU.PC += 3;
}

void ApuC6 ()
{
// MOV (X), A
    S9xAPUSetByteZ (APURegisters.YA.B.A, APURegisters.X);
    IAPU.PC++;
}

void ApuC7 ()
{
// MOV (dp+X),A
    IndexedXIndirect ();
    S9xAPUSetByte (APURegisters.YA.B.A, IAPU.Address);
    IAPU.PC += 2;
}

void ApuC9 ()
{
// MOV abs,X
    Absolute ();
    S9xAPUSetByte (APURegisters.X, IAPU.Address);
    IAPU.PC += 3;
}

void ApuCB ()
{
// MOV dp,Y
    S9xAPUSetByteZ (APURegisters.YA.B.Y, OP1);
    IAPU.PC += 2;
}

void ApuCC ()
{
// MOV abs,Y
    Absolute ();
    S9xAPUSetByte (APURegisters.YA.B.Y, IAPU.Address);
    IAPU.PC += 3;
}

void ApuCD ()
{
// MOV X,#00
    APURegisters.X = OP1;
    APUSetZN8 (APURegisters.X);
    IAPU.PC += 2;
}

void ApuCF ()
{
// MUL YA
    APURegisters.YA.W = (uint16) APURegisters.YA.B.A * APURegisters.YA.B.Y;
    APUSetZN16 (APURegisters.YA.W);
    IAPU.PC++;
}

void ApuD4 ()
{
// MOV dp+X, A
    S9xAPUSetByteZ (APURegisters.YA.B.A, OP1 + APURegisters.X);
    IAPU.PC += 2;
}

void ApuD5 ()
{
// MOV abs+X,A
    AbsoluteX ();
    S9xAPUSetByte (APURegisters.YA.B.A, IAPU.Address);
    IAPU.PC += 3;
}

void ApuD6 ()
{
// MOV abs+Y,A
    AbsoluteY ();
    S9xAPUSetByte (APURegisters.YA.B.A, IAPU.Address);
    IAPU.PC += 3;
}

void ApuD7 ()
{
// MOV (dp)+Y,A
    IndirectIndexedY ();
    S9xAPUSetByte (APURegisters.YA.B.A, IAPU.Address);
    IAPU.PC += 2;
}

void ApuD8 ()
{
// MOV dp,X
    S9xAPUSetByteZ (APURegisters.X, OP1);
    IAPU.PC += 2;
}

void ApuD9 ()
{
// MOV dp+Y,X
    S9xAPUSetByteZ (APURegisters.X, OP1 + APURegisters.YA.B.Y);
    IAPU.PC += 2;
}

void ApuDB ()
{
// MOV dp+X,Y
    S9xAPUSetByteZ (APURegisters.YA.B.Y, OP1 + APURegisters.X);
    IAPU.PC += 2;
}

void ApuDF ()
{
// DAA
    if ((APURegisters.YA.B.A & 0x0f) > 9 || APUCheckHalfCarry())
    {
        if(APURegisters.YA.B.A > 0xf0) APUSetCarry ();
        APURegisters.YA.B.A += 6;
	//APUSetHalfCarry (); Intel procs do this, but this is a Sony proc...
    }
    //else { APUClearHalfCarry (); } ditto as above
    if (APURegisters.YA.B.A > 0x9f || IAPU._Carry)
    {
	APURegisters.YA.B.A += 0x60;
	APUSetCarry ();
    }
    else { APUClearCarry (); }
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC++;
}

void ApuE4 ()
{
// MOV A, dp
    APURegisters.YA.B.A = S9xAPUGetByteZ (OP1);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void ApuE5 ()
{
// MOV A,abs
    Absolute ();
    APURegisters.YA.B.A = S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 3;
}

void ApuE6 ()
{
// MOV A,(X)
    APURegisters.YA.B.A = S9xAPUGetByteZ (APURegisters.X);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC++;
}

void ApuE7 ()
{
// MOV A,(dp+X)
    IndexedXIndirect ();
    APURegisters.YA.B.A = S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void ApuE8 ()
{
// MOV A,#00
    APURegisters.YA.B.A = OP1;
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void ApuE9 ()
{
// MOV X, abs
    Absolute ();
    APURegisters.X = S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.X);
    IAPU.PC += 3;
}

void ApuEB ()
{
// MOV Y,dp
    APURegisters.YA.B.Y = S9xAPUGetByteZ (OP1);
    APUSetZN8 (APURegisters.YA.B.Y);
    IAPU.PC += 2;
}

void ApuEC ()
{
// MOV Y,abs
    Absolute ();
    APURegisters.YA.B.Y = S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.Y);
    IAPU.PC += 3;
}

void ApuF4 ()
{
// MOV A, dp+X
    APURegisters.YA.B.A = S9xAPUGetByteZ (OP1 + APURegisters.X);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void ApuF5 ()
{
// MOV A, abs+X
    AbsoluteX ();
    APURegisters.YA.B.A = S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 3;
}

void ApuF6 ()
{
// MOV A, abs+Y
    AbsoluteY ();
    APURegisters.YA.B.A = S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 3;
}

void ApuF7 ()
{
// MOV A, (dp)+Y
    IndirectIndexedY ();
    APURegisters.YA.B.A = S9xAPUGetByte (IAPU.Address);
    APUSetZN8 (APURegisters.YA.B.A);
    IAPU.PC += 2;
}

void ApuF8 ()
{
// MOV X,dp
    APURegisters.X = S9xAPUGetByteZ (OP1);
    APUSetZN8 (APURegisters.X);
    IAPU.PC += 2;
}

void ApuF9 ()
{
// MOV X,dp+Y
    APURegisters.X = S9xAPUGetByteZ (OP1 + APURegisters.YA.B.Y);
    APUSetZN8 (APURegisters.X);
    IAPU.PC += 2;
}

void ApuFA ()
{
// MOV dp(dest),dp(src)
    S9xAPUSetByteZ (S9xAPUGetByteZ (OP1), OP2);
    IAPU.PC += 3;
}

void ApuFB ()
{
// MOV Y,dp+X
    APURegisters.YA.B.Y = S9xAPUGetByteZ (OP1 + APURegisters.X);
    APUSetZN8 (APURegisters.YA.B.Y);
    IAPU.PC += 2;
}

#ifdef NO_INLINE_SET_GET
#undef INLINE
#define INLINE
#include "apumem.h"
#endif

void (*S9xApuOpcodes[256]) (void) =
{
	Apu00, Apu01, Apu02, Apu03, Apu04, Apu05, Apu06, Apu07,
	Apu08, Apu09, Apu0A, Apu0B, Apu0C, Apu0D, Apu0E, Apu0F,
	Apu10, Apu11, Apu12, Apu13, Apu14, Apu15, Apu16, Apu17,
	Apu18, Apu19, Apu1A, Apu1B, Apu1C, Apu1D, Apu1E, Apu1F,
	Apu20, Apu21, Apu22, Apu23, Apu24, Apu25, Apu26, Apu27,
	Apu28, Apu29, Apu2A, Apu2B, Apu2C, Apu2D, Apu2E, Apu2F,
	Apu30, Apu31, Apu32, Apu33, Apu34, Apu35, Apu36, Apu37,
	Apu38, Apu39, Apu3A, Apu3B, Apu3C, Apu3D, Apu3E, Apu3F,
	Apu40, Apu41, Apu42, Apu43, Apu44, Apu45, Apu46, Apu47,
	Apu48, Apu49, Apu4A, Apu4B, Apu4C, Apu4D, Apu4E, Apu4F,
	Apu50, Apu51, Apu52, Apu53, Apu54, Apu55, Apu56, Apu57,
	Apu58, Apu59, Apu5A, Apu5B, Apu5C, Apu5D, Apu5E, Apu5F,
	Apu60, Apu61, Apu62, Apu63, Apu64, Apu65, Apu66, Apu67,
	Apu68, Apu69, Apu6A, Apu6B, Apu6C, Apu6D, Apu6E, Apu6F,
	Apu70, Apu71, Apu72, Apu73, Apu74, Apu75, Apu76, Apu77,
	Apu78, Apu79, Apu7A, Apu7B, Apu7C, Apu7D, Apu7E, Apu7F,
	Apu80, Apu81, Apu82, Apu83, Apu84, Apu85, Apu86, Apu87,
	Apu88, Apu89, Apu8A, Apu8B, Apu8C, Apu8D, Apu8E, Apu8F,
	Apu90, Apu91, Apu92, Apu93, Apu94, Apu95, Apu96, Apu97,
	Apu98, Apu99, Apu9A, Apu9B, Apu9C, Apu9D, Apu9E, Apu9F,
	ApuA0, ApuA1, ApuA2, ApuA3, ApuA4, ApuA5, ApuA6, ApuA7,
	ApuA8, ApuA9, ApuAA, ApuAB, ApuAC, ApuAD, ApuAE, ApuAF,
	ApuB0, ApuB1, ApuB2, ApuB3, ApuB4, ApuB5, ApuB6, ApuB7,
	ApuB8, ApuB9, ApuBA, ApuBB, ApuBC, ApuBD, ApuBE, ApuBF,
	ApuC0, ApuC1, ApuC2, ApuC3, ApuC4, ApuC5, ApuC6, ApuC7,
	ApuC8, ApuC9, ApuCA, ApuCB, ApuCC, ApuCD, ApuCE, ApuCF,
	ApuD0, ApuD1, ApuD2, ApuD3, ApuD4, ApuD5, ApuD6, ApuD7,
	ApuD8, ApuD9, ApuDA, ApuDB, ApuDC, ApuDD, ApuDE, ApuDF,
	ApuE0, ApuE1, ApuE2, ApuE3, ApuE4, ApuE5, ApuE6, ApuE7,
	ApuE8, ApuE9, ApuEA, ApuEB, ApuEC, ApuED, ApuEE, ApuEF,
	ApuF0, ApuF1, ApuF2, ApuF3, ApuF4, ApuF5, ApuF6, ApuF7,
	ApuF8, ApuF9, ApuFA, ApuFB, ApuFC, ApuFD, ApuFE, ApuFF
};
