dsp1.cpp

SFC游戏模拟器 snes9x 1.43 的原代码

						DSPOp0C ();
						
						DSP1.out_count = 4;
						DSP1.output [0] = (uint8) (Op0CX2&0xFF);
						DSP1.output [1] = (uint8) ((Op0CX2>>8)&0xFF);
						DSP1.output [2] = (uint8) (Op0CY2&0xFF);
						DSP1.output [3] = (uint8) ((Op0CY2>>8)&0xFF);
						break;
						
					case 0x3c:
					case 0x1c:	// Polar (3D rotate)
						Op1CZ = (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						//MK: reversed X and Y on neviksti and John's advice.
						Op1CY = (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op1CX = (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						Op1CXBR = (DSP1.parameters [6]|(DSP1.parameters[7]<<8));
						Op1CYBR = (DSP1.parameters [8]|(DSP1.parameters[9]<<8));
						Op1CZBR = (DSP1.parameters [10]|(DSP1.parameters[11]<<8));
						
						DSPOp1C ();
						
						DSP1.out_count = 6;
						DSP1.output [0] = (uint8) (Op1CXAR&0xFF);
						DSP1.output [1] = (uint8) ((Op1CXAR>>8)&0xFF);
						DSP1.output [2] = (uint8) (Op1CYAR&0xFF);
						DSP1.output [3] = (uint8) ((Op1CYAR>>8)&0xFF);
						DSP1.output [4] = (uint8) (Op1CZAR&0xFF);
						DSP1.output [5] = (uint8) ((Op1CZAR>>8)&0xFF);
						break;
						
					case 0x32:
					case 0x22:
					case 0x12:
					case 0x02:	// Parameter (Projection)
						Op02FX = (short)(DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op02FY = (short)(DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op02FZ = (short)(DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						Op02LFE = (short)(DSP1.parameters [6]|(DSP1.parameters[7]<<8));
						Op02LES = (short)(DSP1.parameters [8]|(DSP1.parameters[9]<<8));
						Op02AAS = (unsigned short)(DSP1.parameters [10]|(DSP1.parameters[11]<<8));
						Op02AZS = (unsigned short)(DSP1.parameters [12]|(DSP1.parameters[13]<<8));
						
						DSPOp02 ();
						
						DSP1.out_count = 8;
						DSP1.output [0] = (uint8) (Op02VOF&0xFF);
						DSP1.output [1] = (uint8) ((Op02VOF>>8)&0xFF);
						DSP1.output [2] = (uint8) (Op02VVA&0xFF);
						DSP1.output [3] = (uint8) ((Op02VVA>>8)&0xFF);
						DSP1.output [4] = (uint8) (Op02CX&0xFF);
						DSP1.output [5] = (uint8) ((Op02CX>>8)&0xFF);
						DSP1.output [6] = (uint8) (Op02CY&0xFF);
						DSP1.output [7] = (uint8) ((Op02CY>>8)&0xFF);
						break;
						
					case 0x3a:  //1a Mirror
					case 0x2a:  //1a Mirror
					case 0x1a:	// Raster mode 7 matrix data
					case 0x0a:
						Op0AVS = (short)(DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						
						DSPOp0A ();
						
						DSP1.out_count = 8;
						DSP1.output [0] = (uint8) (Op0AA&0xFF);
						DSP1.output [2] = (uint8) (Op0AB&0xFF);
						DSP1.output [4] = (uint8) (Op0AC&0xFF);
						DSP1.output [6] = (uint8) (Op0AD&0xFF);
						DSP1.output [1] = (uint8) ((Op0AA>>8)&0xFF);
						DSP1.output [3] = (uint8) ((Op0AB>>8)&0xFF);
						DSP1.output [5] = (uint8) ((Op0AC>>8)&0xFF);
						DSP1.output [7] = (uint8) ((Op0AD>>8)&0xFF);
						DSP1.in_index=0;
						break;
						
					case 0x16:
					case 0x26:
					case 0x36:
					case 0x06:	// Project object
						Op06X = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op06Y = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op06Z = (int16) (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						
						DSPOp06 ();
						
						DSP1.out_count = 6;
						DSP1.output [0] = (uint8) (Op06H&0xff);
						DSP1.output [1] = (uint8) ((Op06H>>8)&0xFF);
						DSP1.output [2] = (uint8) (Op06V&0xFF);
						DSP1.output [3] = (uint8) ((Op06V>>8)&0xFF);
						DSP1.output [4] = (uint8) (Op06S&0xFF);
						DSP1.output [5] = (uint8) ((Op06S>>8)&0xFF);
						break;
						
					case 0x1e:
					case 0x2e:
					case 0x3e:
					case 0x0e:	// Target
						Op0EH = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op0EV = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						
						DSPOp0E ();
						
						DSP1.out_count = 4;
						DSP1.output [0] = (uint8) (Op0EX&0xFF);
						DSP1.output [1] = (uint8) ((Op0EX>>8)&0xFF);
						DSP1.output [2] = (uint8) (Op0EY&0xFF);
						DSP1.output [3] = (uint8) ((Op0EY>>8)&0xFF);
						break;
						
						// Extra commands used by Pilot Wings
					case 0x05:
					case 0x35:
					case 0x31:
					case 0x01: // Set attitude matrix A
						Op01m = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op01Zr = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op01Yr = (int16) (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						Op01Xr = (int16) (DSP1.parameters [6]|(DSP1.parameters[7]<<8));
						
						DSPOp01 ();
						break;
					
					case 0x15:	
					case 0x11:	// Set attitude matrix B
						Op11m = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op11Zr = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op11Yr = (int16) (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						Op11Xr = (int16) (DSP1.parameters [7]|(DSP1.parameters[7]<<8));
						
						DSPOp11 ();
						break;
						
					case 0x25:
					case 0x21:	// Set attitude matrix C
						Op21m = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op21Zr = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op21Yr = (int16) (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						Op21Xr = (int16) (DSP1.parameters [6]|(DSP1.parameters[7]<<8));
						
						DSPOp21 ();
						break;
						
					case 0x09:
					case 0x39:
					case 0x3d:
					case 0x0d:	// Objective matrix A
						Op0DX = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op0DY = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op0DZ = (int16) (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						
						DSPOp0D ();
						
						DSP1.out_count = 6;
						DSP1.output [0] = (uint8) (Op0DF&0xFF);
						DSP1.output [1] = (uint8) ((Op0DF>>8)&0xFF);
						DSP1.output [2] = (uint8) (Op0DL&0xFF);
						DSP1.output [3] = (uint8) ((Op0DL>>8)&0xFF);
						DSP1.output [4] = (uint8) (Op0DU&0xFF);
						DSP1.output [5] = (uint8) ((Op0DU>>8)&0xFF);
						break;
						
					case 0x19:
					case 0x1d:	// Objective matrix B
						Op1DX = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op1DY = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op1DZ = (int16) (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						
						DSPOp1D ();
						
						DSP1.out_count = 6;
						DSP1.output [0] = (uint8) (Op1DF&0xFF);
						DSP1.output [1] = (uint8) ((Op1DF>>8)&0xFF);
						DSP1.output [2] = (uint8) (Op1DL&0xFF);
						DSP1.output [3] = (uint8) ((Op1DL>>8)&0xFF);
						DSP1.output [4] = (uint8) (Op1DU&0xFF);
						DSP1.output [5] = (uint8) ((Op1DU>>8)&0xFF);
						break;
						
					case 0x29:
					case 0x2d:	// Objective matrix C
						Op2DX = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op2DY = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op2DZ = (int16) (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						
						DSPOp2D ();
						
						DSP1.out_count = 6;
						DSP1.output [0] = (uint8) (Op2DF&0xFF);
						DSP1.output [1] = (uint8) ((Op2DF>>8)&0xFF);
						DSP1.output [2] = (uint8) (Op2DL&0xFF);
						DSP1.output [3] = (uint8) ((Op2DL>>8)&0xFF);
						DSP1.output [4] = (uint8) (Op2DU&0xFF);
						DSP1.output [5] = (uint8) ((Op2DU>>8)&0xFF);
						break;
							
					case 0x33:
					case 0x03:	// Subjective matrix A
						Op03F = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op03L = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op03U = (int16) (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						
						DSPOp03 ();
						
						DSP1.out_count = 6;
						DSP1.output [0] = (uint8) (Op03X&0xFF);
						DSP1.output [1] = (uint8) ((Op03X>>8)&0xFF);
						DSP1.output [2] = (uint8) (Op03Y&0xFF);
						DSP1.output [3] = (uint8) ((Op03Y>>8)&0xFF);
						DSP1.output [4] = (uint8) (Op03Z&0xFF);
						DSP1.output [5] = (uint8) ((Op03Z>>8)&0xFF);
						break;
						
					case 0x13:	// Subjective matrix B
						Op13F = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op13L = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op13U = (int16) (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						
						DSPOp13 ();
						
						DSP1.out_count = 6;
						DSP1.output [0] = (uint8) (Op13X&0xFF);
						DSP1.output [1] = (uint8) ((Op13X>>8)&0xFF);
						DSP1.output [2] = (uint8) (Op13Y&0xFF);
						DSP1.output [3] = (uint8) ((Op13Y>>8)&0xFF);
						DSP1.output [4] = (uint8) (Op13Z&0xFF);
						DSP1.output [5] = (uint8) ((Op13Z>>8)&0xFF);
						break;
						
					case 0x23:	// Subjective matrix C
						Op23F = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op23L = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op23U = (int16) (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						
						DSPOp23 ();
						
						DSP1.out_count = 6;
						DSP1.output [0] = (uint8) (Op23X&0xFF);
						DSP1.output [1] = (uint8) ((Op23X>>8)&0xFF);
						DSP1.output [2] = (uint8) (Op23Y&0xFF);
						DSP1.output [3] = (uint8) ((Op23Y>>8)&0xFF);
						DSP1.output [4] = (uint8) (Op23Z&0xFF);
						DSP1.output [5] = (uint8) ((Op23Z>>8)&0xFF);
						break;
						
					case 0x3b:
					case 0x0b:
						Op0BX = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op0BY = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op0BZ = (int16) (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						
						DSPOp0B ();
						
						DSP1.out_count = 2;
						DSP1.output [0] = (uint8) (Op0BS&0xFF);
						DSP1.output [1] = (uint8) ((Op0BS>>8)&0xFF);
						break;
						
					case 0x1b:
						Op1BX = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op1BY = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op1BZ = (int16) (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						
						DSPOp1B ();
						
						DSP1.out_count = 2;
						DSP1.output [0] = (uint8) (Op1BS&0xFF);
						DSP1.output [1] = (uint8) ((Op1BS>>8)&0xFF);
						break;
						
					case 0x2b:
						Op2BX = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op2BY = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op2BZ = (int16) (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						
						DSPOp2B ();
						
						DSP1.out_count = 2;
						DSP1.output [0] = (uint8) (Op2BS&0xFF);
						DSP1.output [1] = (uint8) ((Op2BS>>8)&0xFF);
						break;
						
					case 0x34:
					case 0x14:	
						Op14Zr = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						Op14Xr = (int16) (DSP1.parameters [2]|(DSP1.parameters[3]<<8));
						Op14Yr = (int16) (DSP1.parameters [4]|(DSP1.parameters[5]<<8));
						Op14U = (int16) (DSP1.parameters [6]|(DSP1.parameters[7]<<8));
						Op14F = (int16) (DSP1.parameters [8]|(DSP1.parameters[9]<<8));
						Op14L = (int16) (DSP1.parameters [10]|(DSP1.parameters[11]<<8));
						
						DSPOp14 ();
						
						DSP1.out_count = 6;
						DSP1.output [0] = (uint8) (Op14Zrr&0xFF);
						DSP1.output [1] = (uint8) ((Op14Zrr>>8)&0xFF);
						DSP1.output [2] = (uint8) (Op14Xrr&0xFF);
						DSP1.output [3] = (uint8) ((Op14Xrr>>8)&0xFF);
						DSP1.output [4] = (uint8) (Op14Yrr&0xFF);
						DSP1.output [5] = (uint8) ((Op14Yrr>>8)&0xFF);
						break;
					
					case 0x27:
					case 0x2F:
						Op2FUnknown = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						
						DSPOp2F ();
						
						DSP1.out_count = 2;
						DSP1.output [0] = (uint8)(Op2FSize&0xFF);
						DSP1.output [1] = (uint8)((Op2FSize>>8)&0xFF);
						break;
						
	
					case 0x07:
					case 0x0F:
						Op0FRamsize = (int16) (DSP1.parameters [0]|(DSP1.parameters[1]<<8));
						
						DSPOp0F ();
						
						DSP1.out_count = 2;
						DSP1.output [0] = (uint8)(Op0FPass&0xFF);
						DSP1.output [1] = (uint8)((Op0FPass>>8)&0xFF);
						break;
						
					default:
						break;
					}
				}
			}
		}
    }
}

uint8 DSP1GetByte(uint16 address)
{
	uint8 t;
    if ((address & 0xf000) == 0x6000 ||
//		(address >= 0x8000 && address < 0xc000))
		(address&0x7fff) < 0x4000)
    {
		if (DSP1.out_count)
		{
			//if ((address & 1) == 0)
				t = (uint8) DSP1.output [DSP1.out_index];
			//else
			//{
			//	t = (uint8) (DSP1.output [DSP1.out_index] >> 8);
				DSP1.out_index++;
				if (--DSP1.out_count == 0)
				{
					if (DSP1.command == 0x1a || DSP1.command == 0x0a)
					{
						DSPOp0A ();
						DSP1.out_count = 8;
						DSP1.out_index = 0;
						DSP1.output [0] = (Op0AA&0xFF);
						DSP1.output [1] = (Op0AA>>8)&0xFF;
						DSP1.output [2] = (Op0AB&0xFF);
						DSP1.output [3] = (Op0AB>>8)&0xFF;
						DSP1.output [4] = (Op0AC&0xFF);
						DSP1.output [5] = (Op0AC>>8)&0xFF;
						DSP1.output [6] = (Op0AD&0xFF);
						DSP1.output [7] = (Op0AD>>8)&0xFF;
					}
					if(DSP1.command==0x1f)
					{
						if((DSP1.out_index%2)!=0)
						{
							t=(uint8)DSP1ROM[DSP1.out_index>>1];
						}
						else
						{
							t=DSP1ROM[DSP1.out_index>>1]>>8;
						}
					}
				}
				DSP1.waiting4command = TRUE;
			//}
		}
		else
		{
			// Top Gear 3000 requires this value....
	//		if(4==Settings.DSPVersion)
				t = 0xff;
			//Ballz3d requires this one:
	//		else t = 0x00;
		}
    }
    else t = 0x80;
	return t;
}

void DSP2SetByte(uint8 byte, uint16 address)
{
	if ((address & 0xf000) == 0x6000 ||
		(address >= 0x8000 && address < 0xc000))
    {
		if (DSP1.waiting4command)