dsp1emu.c

linux下的任天堂模拟器代码。供大家参考。

/*
Copyright (C) 1997-2007 ZSNES Team ( zsKnight, _Demo_, pagefault, Nach )

http://www.zsnes.com
http://sourceforge.net/projects/zsnes
https://zsnes.bountysource.com

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#define __ZSNES__

#if (defined __ZSNES__ && __UNIXSDL__)
#include "../gblhdr.h"
#else

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#endif
//#define DebugDSP1

#ifdef DebugDSP1

FILE * LogFile = NULL;

void Log_Message (char *Message, ...)
{
	char Msg[400];
	va_list ap;

   va_start(ap,Message);
   vsprintf(Msg,Message,ap );
   va_end(ap);

   strcat(Msg,"\r\n\0");
   fwrite(Msg,strlen(Msg),1,LogFile);
   fflush (LogFile);
}

void Start_Log (void)
{
	char LogFileName[255];
//  [4/15/2001]	char *p;

   strcpy(LogFileName,"dsp1emu.log\0");

   LogFile = fopen(LogFileName,"wb");
}

void Stop_Log (void)
{
   if (LogFile)
   {
      fclose(LogFile);
      LogFile = NULL;
   }
}

#endif

const unsigned short DSP1ROM[1024] = {
	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,
	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,
	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,
	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,
	0x0000,	0x0000,	0x0001,	0x0002,	0x0004,	0x0008,	0x0010,	0x0020,
	0x0040,	0x0080,	0x0100,	0x0200,	0x0400,	0x0800,	0x1000,	0x2000,
	0x4000,	0x7fff,	0x4000,	0x2000,	0x1000,	0x0800,	0x0400,	0x0200,
	0x0100,	0x0080,	0x0040,	0x0020,	0x0001,	0x0008,	0x0004,	0x0002,
	0x0001,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,
	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,
	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,
	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,	0x0000,
	0x0000,	0x0000,	0x8000,	0xffe5,	0x0100,	0x7fff,	0x7f02,	0x7e08,
	0x7d12,	0x7c1f,	0x7b30,	0x7a45,	0x795d,	0x7878,	0x7797,	0x76ba,
	0x75df,	0x7507,	0x7433,	0x7361,	0x7293,	0x71c7,	0x70fe,	0x7038,
	0x6f75,	0x6eb4,	0x6df6,	0x6d3a,	0x6c81,	0x6bca,	0x6b16,	0x6a64,
	0x69b4,	0x6907,	0x685b,	0x67b2,	0x670b,	0x6666,	0x65c4,	0x6523,
	0x6484,	0x63e7,	0x634c,	0x62b3,	0x621c,	0x6186,	0x60f2,	0x6060,
	0x5fd0,	0x5f41,	0x5eb5,	0x5e29,	0x5d9f,	0x5d17,	0x5c91,	0x5c0c,
	0x5b88,	0x5b06,	0x5a85,	0x5a06,	0x5988,	0x590b,	0x5890,	0x5816,
	0x579d,	0x5726,	0x56b0,	0x563b,	0x55c8,	0x5555,	0x54e4,	0x5474,
	0x5405,	0x5398,	0x532b,	0x52bf,	0x5255,	0x51ec,	0x5183,	0x511c,
	0x50b6,	0x5050,	0x4fec,	0x4f89,	0x4f26,	0x4ec5,	0x4e64,	0x4e05,
	0x4da6,	0x4d48,	0x4cec,	0x4c90,	0x4c34,	0x4bda,	0x4b81,	0x4b28,
	0x4ad0,	0x4a79,	0x4a23,	0x49cd,	0x4979,	0x4925,	0x48d1,	0x487f,
	0x482d,	0x47dc,	0x478c,	0x473c,	0x46ed,	0x469f,	0x4651,	0x4604,
	0x45b8,	0x456c,	0x4521,	0x44d7,	0x448d,	0x4444,	0x43fc,	0x43b4,
	0x436d,	0x4326,	0x42e0,	0x429a,	0x4255,	0x4211,	0x41cd,	0x4189,
	0x4146,	0x4104,	0x40c2,	0x4081,	0x4040,	0x3fff,	0x41f7,	0x43e1,
	0x45bd,	0x478d,	0x4951,	0x4b0b,	0x4cbb,	0x4e61,	0x4fff,	0x5194,
	0x5322,	0x54a9,	0x5628,	0x57a2,	0x5914,	0x5a81,	0x5be9,	0x5d4a,
	0x5ea7,	0x5fff,	0x6152,	0x62a0,	0x63ea,	0x6530,	0x6672,	0x67b0,
	0x68ea,	0x6a20,	0x6b53,	0x6c83,	0x6daf,	0x6ed9,	0x6fff,	0x7122,
	0x7242,	0x735f,	0x747a,	0x7592,	0x76a7,	0x77ba,	0x78cb,	0x79d9,
	0x7ae5,	0x7bee,	0x7cf5,	0x7dfa,	0x7efe,	0x7fff,	0x0000,	0x0324,
	0x0647,	0x096a,	0x0c8b,	0x0fab,	0x12c8,	0x15e2,	0x18f8,	0x1c0b,
	0x1f19,	0x2223,	0x2528,	0x2826,	0x2b1f,	0x2e11,	0x30fb,	0x33de,
	0x36ba,	0x398c,	0x3c56,	0x3f17,	0x41ce,	0x447a,	0x471c,	0x49b4,
	0x4c3f,	0x4ebf,	0x5133,	0x539b,	0x55f5,	0x5842,	0x5a82,	0x5cb4,
	0x5ed7,	0x60ec,	0x62f2,	0x64e8,	0x66cf,	0x68a6,	0x6a6d,	0x6c24,
	0x6dca,	0x6f5f,	0x70e2,	0x7255,	0x73b5,	0x7504,	0x7641,	0x776c,
	0x7884,	0x798a,	0x7a7d,	0x7b5d,	0x7c29,	0x7ce3,	0x7d8a,	0x7e1d,
	0x7e9d,	0x7f09,	0x7f62,	0x7fa7,	0x7fd8,	0x7ff6,	0x7fff,	0x7ff6,
	0x7fd8,	0x7fa7,	0x7f62,	0x7f09,	0x7e9d,	0x7e1d,	0x7d8a,	0x7ce3,
	0x7c29,	0x7b5d,	0x7a7d,	0x798a,	0x7884,	0x776c,	0x7641,	0x7504,
	0x73b5,	0x7255,	0x70e2,	0x6f5f,	0x6dca,	0x6c24,	0x6a6d,	0x68a6,
	0x66cf,	0x64e8,	0x62f2,	0x60ec,	0x5ed7,	0x5cb4,	0x5a82,	0x5842,
	0x55f5,	0x539b,	0x5133,	0x4ebf,	0x4c3f,	0x49b4,	0x471c,	0x447a,
	0x41ce,	0x3f17,	0x3c56,	0x398c,	0x36ba,	0x33de,	0x30fb,	0x2e11,
	0x2b1f,	0x2826,	0x2528,	0x2223,	0x1f19,	0x1c0b,	0x18f8,	0x15e2,
	0x12c8,	0x0fab,	0x0c8b,	0x096a,	0x0647,	0x0324,	0x7fff,	0x7ff6,
	0x7fd8,	0x7fa7,	0x7f62,	0x7f09,	0x7e9d,	0x7e1d,	0x7d8a,	0x7ce3,
	0x7c29,	0x7b5d,	0x7a7d,	0x798a,	0x7884,	0x776c,	0x7641,	0x7504,
	0x73b5,	0x7255,	0x70e2,	0x6f5f,	0x6dca,	0x6c24,	0x6a6d,	0x68a6,
	0x66cf,	0x64e8,	0x62f2,	0x60ec,	0x5ed7,	0x5cb4,	0x5a82,	0x5842,
	0x55f5,	0x539b,	0x5133,	0x4ebf,	0x4c3f,	0x49b4,	0x471c,	0x447a,
	0x41ce,	0x3f17,	0x3c56,	0x398c,	0x36ba,	0x33de,	0x30fb,	0x2e11,
	0x2b1f,	0x2826,	0x2528,	0x2223,	0x1f19,	0x1c0b,	0x18f8,	0x15e2,
	0x12c8,	0x0fab,	0x0c8b,	0x096a,	0x0647,	0x0324,	0x0000,	0xfcdc,
	0xf9b9,	0xf696,	0xf375,	0xf055,	0xed38,	0xea1e,	0xe708,	0xe3f5,
	0xe0e7,	0xdddd,	0xdad8,	0xd7da,	0xd4e1,	0xd1ef,	0xcf05,	0xcc22,
	0xc946,	0xc674,	0xc3aa,	0xc0e9,	0xbe32,	0xbb86,	0xb8e4,	0xb64c,
	0xb3c1,	0xb141,	0xaecd,	0xac65,	0xaa0b,	0xa7be,	0xa57e,	0xa34c,
	0xa129,	0x9f14,	0x9d0e,	0x9b18,	0x9931,	0x975a,	0x9593,	0x93dc,
	0x9236,	0x90a1,	0x8f1e,	0x8dab,	0x8c4b,	0x8afc,	0x89bf,	0x8894,
	0x877c,	0x8676,	0x8583,	0x84a3,	0x83d7,	0x831d,	0x8276,	0x81e3,
	0x8163,	0x80f7,	0x809e,	0x8059,	0x8028,	0x800a,	0x6488,	0x0080,
	0x03ff,	0x0116,	0x0002,	0x0080,	0x4000,	0x3fd7,	0x3faf,	0x3f86,
	0x3f5d,	0x3f34,	0x3f0c,	0x3ee3,	0x3eba,	0x3e91,	0x3e68,	0x3e40,
	0x3e17,	0x3dee,	0x3dc5,	0x3d9c,	0x3d74,	0x3d4b,	0x3d22,	0x3cf9,
	0x3cd0,	0x3ca7,	0x3c7f,	0x3c56,	0x3c2d,	0x3c04,	0x3bdb,	0x3bb2,
	0x3b89,	0x3b60,	0x3b37,	0x3b0e,	0x3ae5,	0x3abc,	0x3a93,	0x3a69,
	0x3a40,	0x3a17,	0x39ee,	0x39c5,	0x399c,	0x3972,	0x3949,	0x3920,
	0x38f6,	0x38cd,	0x38a4,	0x387a,	0x3851,	0x3827,	0x37fe,	0x37d4,
	0x37aa,	0x3781,	0x3757,	0x372d,	0x3704,	0x36da,	0x36b0,	0x3686,
	0x365c,	0x3632,	0x3609,	0x35df,	0x35b4,	0x358a,	0x3560,	0x3536,
	0x350c,	0x34e1,	0x34b7,	0x348d,	0x3462,	0x3438,	0x340d,	0x33e3,
	0x33b8,	0x338d,	0x3363,	0x3338,	0x330d,	0x32e2,	0x32b7,	0x328c,
	0x3261,	0x3236,	0x320b,	0x31df,	0x31b4,	0x3188,	0x315d,	0x3131,
	0x3106,	0x30da,	0x30ae,	0x3083,	0x3057,	0x302b,	0x2fff,	0x2fd2,
	0x2fa6,	0x2f7a,	0x2f4d,	0x2f21,	0x2ef4,	0x2ec8,	0x2e9b,	0x2e6e,
	0x2e41,	0x2e14,	0x2de7,	0x2dba,	0x2d8d,	0x2d60,	0x2d32,	0x2d05,
	0x2cd7,	0x2ca9,	0x2c7b,	0x2c4d,	0x2c1f,	0x2bf1,	0x2bc3,	0x2b94,
	0x2b66,	0x2b37,	0x2b09,	0x2ada,	0x2aab,	0x2a7c,	0x2a4c,	0x2a1d,
	0x29ed,	0x29be,	0x298e,	0x295e,	0x292e,	0x28fe,	0x28ce,	0x289d,
	0x286d,	0x283c,	0x280b,	0x27da,	0x27a9,	0x2777,	0x2746,	0x2714,
	0x26e2,	0x26b0,	0x267e,	0x264c,	0x2619,	0x25e7,	0x25b4,	0x2581,
	0x254d,	0x251a,	0x24e6,	0x24b2,	0x247e,	0x244a,	0x2415,	0x23e1,
	0x23ac,	0x2376,	0x2341,	0x230b,	0x22d6,	0x229f,	0x2269,	0x2232,
	0x21fc,	0x21c4,	0x218d,	0x2155,	0x211d,	0x20e5,	0x20ad,	0x2074,
	0x203b,	0x2001,	0x1fc7,	0x1f8d,	0x1f53,	0x1f18,	0x1edd,	0x1ea1,
	0x1e66,	0x1e29,	0x1ded,	0x1db0,	0x1d72,	0x1d35,	0x1cf6,	0x1cb8,
	0x1c79,	0x1c39,	0x1bf9,	0x1bb8,	0x1b77,	0x1b36,	0x1af4,	0x1ab1,
	0x1a6e,	0x1a2a,	0x19e6,	0x19a1,	0x195c,	0x1915,	0x18ce,	0x1887,
	0x183f,	0x17f5,	0x17ac,	0x1761,	0x1715,	0x16c9,	0x167c,	0x162e,
	0x15df,	0x158e,	0x153d,	0x14eb,	0x1497,	0x1442,	0x13ec,	0x1395,
	0x133c,	0x12e2,	0x1286,	0x1228,	0x11c9,	0x1167,	0x1104,	0x109e,
	0x1036,	0x0fcc,	0x0f5f,	0x0eef,	0x0e7b,	0x0e04,	0x0d89,	0x0d0a,
	0x0c86,	0x0bfd,	0x0b6d,	0x0ad6,	0x0a36,	0x098d,	0x08d7,	0x0811,
	0x0736,	0x063e,	0x0519,	0x039a,	0x0000,	0x7fff,	0x0100,	0x0080,
	0x021d,	0x00c8,	0x00ce,	0x0048,	0x0a26,	0x277a,	0x00ce,	0x6488,
	0x14ac,	0x0001,	0x00f9,	0x00fc,	0x00ff,	0x00fc,	0x00f9,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,
	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff,	0xffff};

/***************************************************************************\
*  DSP1 code                                                                *
\***************************************************************************/

void InitDSP(void)
{
#ifdef DebugDSP1
	Start_Log();
#endif
}

short Op00Multiplicand;
short Op00Multiplier;
short Op00Result;

void DSPOp00()
{
   Op00Result= Op00Multiplicand * Op00Multiplier >> 15;

   #ifdef DebugDSP1
      Log_Message("OP00 MULT %d*%d/32768=%d",Op00Multiplicand,Op00Multiplier,Op00Result);
   #endif
}

short Op20Multiplicand;
short Op20Multiplier;
short Op20Result;

void DSPOp20()
{
   Op20Result= Op20Multiplicand * Op20Multiplier >> 15;
   Op20Result++;

   #ifdef DebugDSP1
      Log_Message("OP20 MULT %d*%d/32768=%d",Op20Multiplicand,Op20Multiplier,Op20Result);
   #endif
}

signed short Op10Coefficient;
signed short Op10Exponent;
signed short Op10CoefficientR;
signed short Op10ExponentR;

void DSP1_Inverse(short Coefficient, short Exponent, short *iCoefficient, short *iExponent)
{
	// Step One: Division by Zero
	if (Coefficient == 0x0000)
	{
		*iCoefficient = 0x7fff;
		*iExponent = 0x002f;
	}
	else
	{
		short Sign = 1;

		// Step Two: Remove Sign
		if (Coefficient < 0)
		{
			if (Coefficient < -32767) Coefficient = -32767;
			Coefficient = -Coefficient;
			Sign = -1;
		}

		// Step Three: Normalize
		while (Coefficient < 0x4000)
		{
			Coefficient <<= 1;
			Exponent--;
		}

		// Step Four: Special Case
		if (Coefficient == 0x4000)
			if (Sign == 1) *iCoefficient = 0x7fff;
			else  {
				*iCoefficient = -0x4000;
				Exponent--;
			}
		else {
			// Step Five: Initial Guess
			short i = DSP1ROM[((Coefficient - 0x4000) >> 7) + 0x0065];

			// Step Six: Iterate "estimated" Newton's Method
			i = (i + (-i * (Coefficient * i >> 15) >> 15)) << 1;
			i = (i + (-i * (Coefficient * i >> 15) >> 15)) << 1;

			*iCoefficient = i * Sign;
		}

		*iExponent = 1 - Exponent;
	}
}

void DSPOp10()
{
	DSP1_Inverse(Op10Coefficient, Op10Exponent, &Op10CoefficientR, &Op10ExponentR);
	#ifdef DebugDSP1
        Log_Message("OP10 INV %d*2^%d = %d*2^%d", Op10Coefficient, Op10Exponent, Op10CoefficientR, Op10ExponentR);
	#endif
}

short Op04Angle;
short Op04Radius;
short Op04Sin;
short Op04Cos;

const short DSP1_MulTable[256] = {
	  0x0000,  0x0003,  0x0006,  0x0009,  0x000c,  0x000f,  0x0012,  0x0015,
	  0x0019,  0x001c,  0x001f,  0x0022,  0x0025,  0x0028,  0x002b,  0x002f,
	  0x0032,  0x0035,  0x0038,  0x003b,  0x003e,  0x0041,  0x0045,  0x0048,
	  0x004b,  0x004e,  0x0051,  0x0054,  0x0057,  0x005b,  0x005e,  0x0061,
	  0x0064,  0x0067,  0x006a,  0x006d,  0x0071,  0x0074,  0x0077,  0x007a,
	  0x007d,  0x0080,  0x0083,  0x0087,  0x008a,  0x008d,  0x0090,  0x0093,
	  0x0096,  0x0099,  0x009d,  0x00a0,  0x00a3,  0x00a6,  0x00a9,  0x00ac,
	  0x00af,  0x00b3,  0x00b6,  0x00b9,  0x00bc,  0x00bf,  0x00c2,  0x00c5,
	  0x00c9,  0x00cc,  0x00cf,  0x00d2,  0x00d5,  0x00d8,  0x00db,  0x00df,
	  0x00e2,  0x00e5,  0x00e8,  0x00eb,  0x00ee,  0x00f1,  0x00f5,  0x00f8,
	  0x00fb,  0x00fe,  0x0101,  0x0104,  0x0107,  0x010b,  0x010e,  0x0111,
	  0x0114,  0x0117,  0x011a,  0x011d,  0x0121,  0x0124,  0x0127,  0x012a,
	  0x012d,  0x0130,  0x0133,  0x0137,  0x013a,  0x013d,  0x0140,  0x0143,
	  0x0146,  0x0149,  0x014d,  0x0150,  0x0153,  0x0156,  0x0159,  0x015c,
	  0x015f,  0x0163,  0x0166,  0x0169,  0x016c,  0x016f,  0x0172,  0x0175,
	  0x0178,  0x017c,  0x017f,  0x0182,  0x0185,  0x0188,  0x018b,  0x018e,
	  0x0192,  0x0195,  0x0198,  0x019b,  0x019e,  0x01a1,  0x01a4,  0x01a8,
	  0x01ab,  0x01ae,  0x01b1,  0x01b4,  0x01b7,  0x01ba,  0x01be,  0x01c1,
	  0x01c4,  0x01c7,  0x01ca,  0x01cd,  0x01d0,  0x01d4,  0x01d7,  0x01da,
	  0x01dd,  0x01e0,  0x01e3,  0x01e6,  0x01ea,  0x01ed,  0x01f0,  0x01f3,
	  0x01f6,  0x01f9,  0x01fc,  0x0200,  0x0203,  0x0206,  0x0209,  0x020c,
	  0x020f,  0x0212,  0x0216,  0x0219,  0x021c,  0x021f,  0x0222,  0x0225,
	  0x0228,  0x022c,  0x022f,  0x0232,  0x0235,  0x0238,  0x023b,  0x023e,
	  0x0242,  0x0245,  0x0248,  0x024b,  0x024e,  0x0251,  0x0254,  0x0258,
	  0x025b,  0x025e,  0x0261,  0x0264,  0x0267,  0x026a,  0x026e,  0x0271,
	  0x0274,  0x0277,  0x027a,  0x027d,  0x0280,  0x0284,  0x0287,  0x028a,
	  0x028d,  0x0290,  0x0293,  0x0296,  0x029a,  0x029d,  0x02a0,  0x02a3,
	  0x02a6,  0x02a9,  0x02ac,  0x02b0,  0x02b3,  0x02b6,  0x02b9,  0x02bc,
	  0x02bf,  0x02c2,  0x02c6,  0x02c9,  0x02cc,  0x02cf,  0x02d2,  0x02d5,
	  0x02d8,  0x02db,  0x02df,  0x02e2,  0x02e5,  0x02e8,  0x02eb,  0x02ee,
	  0x02f1,  0x02f5,  0x02f8,  0x02fb,  0x02fe,  0x0301,  0x0304,  0x0307,
	  0x030b,  0x030e,  0x0311,  0x0314,  0x0317,  0x031a,  0x031d,  0x0321};

const short DSP1_SinTable[256] = {
	  0x0000,  0x0324,  0x0647,  0x096a,  0x0c8b,  0x0fab,  0x12c8,  0x15e2,
	  0x18f8,  0x1c0b,  0x1f19,  0x2223,  0x2528,  0x2826,  0x2b1f,  0x2e11,
	  0x30fb,  0x33de,  0x36ba,  0x398c,  0x3c56,  0x3f17,  0x41ce,  0x447a,
	  0x471c,  0x49b4,  0x4c3f,  0x4ebf,  0x5133,  0x539b,  0x55f5,  0x5842,
	  0x5a82,  0x5cb4,  0x5ed7,  0x60ec,  0x62f2,  0x64e8,  0x66cf,  0x68a6,
	  0x6a6d,  0x6c24,  0x6dca,  0x6f5f,  0x70e2,  0x7255,  0x73b5,  0x7504,
	  0x7641,  0x776c,  0x7884,  0x798a,  0x7a7d,  0x7b5d,  0x7c29,  0x7ce3,
	  0x7d8a,  0x7e1d,  0x7e9d,  0x7f09,  0x7f62,  0x7fa7,  0x7fd8,  0x7ff6,
	  0x7fff,  0x7ff6,  0x7fd8,  0x7fa7,  0x7f62,  0x7f09,  0x7e9d,  0x7e1d,
	  0x7d8a,  0x7ce3,  0x7c29,  0x7b5d,  0x7a7d,  0x798a,  0x7884,  0x776c,
	  0x7641,  0x7504,  0x73b5,  0x7255,  0x70e2,  0x6f5f,  0x6dca,  0x6c24,
	  0x6a6d,  0x68a6,  0x66cf,  0x64e8,  0x62f2,  0x60ec,  0x5ed7,  0x5cb4,
	  0x5a82,  0x5842,  0x55f5,  0x539b,  0x5133,  0x4ebf,  0x4c3f,  0x49b4,
	  0x471c,  0x447a,  0x41ce,  0x3f17,  0x3c56,  0x398c,  0x36ba,  0x33de,
	  0x30fb,  0x2e11,  0x2b1f,  0x2826,  0x2528,  0x2223,  0x1f19,  0x1c0b,
	  0x18f8,  0x15e2,  0x12c8,  0x0fab,  0x0c8b,  0x096a,  0x0647,  0x0324,
	 -0x0000, -0x0324, -0x0647, -0x096a, -0x0c8b, -0x0fab, -0x12c8, -0x15e2,
	 -0x18f8, -0x1c0b, -0x1f19, -0x2223, -0x2528, -0x2826, -0x2b1f, -0x2e11,
	 -0x30fb, -0x33de, -0x36ba, -0x398c, -0x3c56, -0x3f17, -0x41ce, -0x447a,
	 -0x471c, -0x49b4, -0x4c3f, -0x4ebf, -0x5133, -0x539b, -0x55f5, -0x5842,
	 -0x5a82, -0x5cb4, -0x5ed7, -0x60ec, -0x62f2, -0x64e8, -0x66cf, -0x68a6,
	 -0x6a6d, -0x6c24, -0x6dca, -0x6f5f, -0x70e2, -0x7255, -0x73b5, -0x7504,
	 -0x7641, -0x776c, -0x7884, -0x798a, -0x7a7d, -0x7b5d, -0x7c29, -0x7ce3,
	 -0x7d8a, -0x7e1d, -0x7e9d, -0x7f09, -0x7f62, -0x7fa7, -0x7fd8, -0x7ff6,
	 -0x7fff, -0x7ff6, -0x7fd8, -0x7fa7, -0x7f62, -0x7f09, -0x7e9d, -0x7e1d,
	 -0x7d8a, -0x7ce3, -0x7c29, -0x7b5d, -0x7a7d, -0x798a, -0x7884, -0x776c,
	 -0x7641, -0x7504, -0x73b5, -0x7255, -0x70e2, -0x6f5f, -0x6dca, -0x6c24,
	 -0x6a6d, -0x68a6, -0x66cf, -0x64e8, -0x62f2, -0x60ec, -0x5ed7, -0x5cb4,
	 -0x5a82, -0x5842, -0x55f5, -0x539b, -0x5133, -0x4ebf, -0x4c3f, -0x49b4,
	 -0x471c, -0x447a, -0x41ce, -0x3f17, -0x3c56, -0x398c, -0x36ba, -0x33de,
	 -0x30fb, -0x2e11, -0x2b1f, -0x2826, -0x2528, -0x2223, -0x1f19, -0x1c0b,
	 -0x18f8, -0x15e2, -0x12c8, -0x0fab, -0x0c8b, -0x096a, -0x0647, -0x0324};

short DSP1_Sin(short Angle)
{
  int S;
	if (Angle < 0) {
		if (Angle == -32768) return 0;
		return -DSP1_Sin(-Angle);
	}
  S = DSP1_SinTable[Angle >> 8] + (DSP1_MulTable[Angle & 0xff] * DSP1_SinTable[0x40 + (Angle >> 8)] >> 15);
	if (S > 32767) S = 32767;
	return (short) S;
}

short DSP1_Cos(short Angle)
{
  int S;
	if (Angle < 0) {
		if (Angle == -32768) return -32768;
		Angle = -Angle;
	}
	S = DSP1_SinTable[0x40 + (Angle >> 8)] - (DSP1_MulTable[Angle & 0xff] * DSP1_SinTable[Angle >> 8] >> 15);
	if (S < -32768) S = -32767;
	return (short) S;
}

void DSP1_Normalize(short m, short *Coefficient, short *Exponent)
{
	short i = 0x4000;
	short e = 0;

	if (m < 0)
		while ((m & i) && i) {