/******************************************************************************* Snes9x - Portable Super Nintendo Entertainment System (TM) emulator. (c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and Jerremy Koot (jkoot@snes9x.com) (c) Copyright 2001 - 2004 John Weidman (jweidman@slip.net) (c) Copyright 2002 - 2004 Brad Jorsch (anomie@users.sourceforge.net), funkyass (funkyass@spam.shaw.ca), Joel Yliluoma (http://iki.fi/bisqwit/) Kris Bleakley (codeviolation@hotmail.com), Matthew Kendora, Nach (n-a-c-h@users.sourceforge.net), Peter Bortas (peter@bortas.org) and zones (kasumitokoduck@yahoo.com) C4 x86 assembler and some C emulation code (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com), _Demo_ (_demo_@zsnes.com), and Nach C4 C++ code (c) Copyright 2003 Brad Jorsch DSP-1 emulator code (c) Copyright 1998 - 2004 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson, John Weidman, neviksti (neviksti@hotmail.com), Kris Bleakley, Andreas Naive 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 - 2004 zsKnight, pagefault (pagefault@zsnes.com) and Kris Bleakley 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-DD1 C emulator code (c) Copyright 2003 Brad Jorsch with research by Andreas Naive and John Weidman S-RTC C emulator code (c) Copyright 2001 John Weidman ST010 C++ emulator code (c) Copyright 2003 Feather, Kris Bleakley, John Weidman and Matthew Kendora Super FX x86 assembler emulator code (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault Super FX C emulator code (c) Copyright 1997 - 1999 Ivar, Gary Henderson and John Weidman SH assembler code partly based on x86 assembler code (c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se) 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. *******************************************************************************/ #ifdef HAVE_CONFIG_H #include #endif #include #include "snes9x.h" #include "sar.h" #include "memmap.h" #include "ppu.h" #include "c4.h" void S9xInitC4() { // Stupid zsnes code, we can't do the logical thing without breaking // savestates // Memory.C4RAM = &Memory.FillRAM [0x6000]; memset(Memory.C4RAM, 0, 0x2000); } uint8_t S9xGetC4(uint16_t Address) { return (Memory.C4RAM [Address - 0x6000]); } static uint8_t C4TestPattern [12 * 4] = { 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0xff, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x80, 0xff, 0xff, 0x7f, 0x00, 0x80, 0x00, 0xff, 0x7f, 0x00, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0xff, 0x00, 0x00, 0x01, 0xff, 0xff, 0xfe, 0x00, 0x01, 0x00, 0xff, 0xfe, 0x00 }; static void C4ConvOAM(void) { uint8_t* i; uint8_t* OAMptr = Memory.C4RAM + (Memory.C4RAM[0x626] << 2); for (i = Memory.C4RAM + 0x1fd; i > OAMptr; i -= 4) { // Clear OAM-to-be *i = 0xe0; } uint16_t globalX, globalY; uint8_t* OAMptr2; int16_t SprX, SprY; uint8_t SprName, SprAttr; uint8_t SprCount; globalX = READ_WORD(Memory.C4RAM + 0x0621); globalY = READ_WORD(Memory.C4RAM + 0x0623); OAMptr2 = Memory.C4RAM + 0x200 + (Memory.C4RAM[0x626] >> 2); if (Memory.C4RAM[0x0620] != 0) { int prio, i; SprCount = 128 - Memory.C4RAM[0x626]; uint8_t offset = (Memory.C4RAM[0x626] & 3) * 2; for (prio = 0x30; prio >= 0; prio -= 0x10) { uint8_t* srcptr = Memory.C4RAM + 0x220; for (i = Memory.C4RAM[0x0620]; i > 0 && SprCount > 0; i--, srcptr += 16) { if ((srcptr[4] & 0x30) != prio) continue; SprX = READ_WORD(srcptr) - globalX; SprY = READ_WORD(srcptr + 2) - globalY; SprName = srcptr[5]; SprAttr = srcptr[4] | srcptr[0x06]; // XXX: mask bits? uint8_t* sprptr = S9xGetMemPointer(READ_3WORD(srcptr + 7)); if (*sprptr != 0) { int SprCnt; int16_t X, Y; for (SprCnt = *sprptr++; SprCnt > 0 && SprCount > 0; SprCnt--, sprptr += 4) { X = (int8_t)sprptr[1]; if (SprAttr & 0x40) // flip X X = -X - ((sprptr[0] & 0x20) ? 16 : 8); X += SprX; if (X >= -16 && X <= 272) { Y = (int8_t)sprptr[2]; if (SprAttr & 0x80) Y = -Y - ((sprptr[0] & 0x20) ? 16 : 8); Y += SprY; if (Y >= -16 && Y <= 224) { OAMptr[0] = X & 0xff; OAMptr[1] = (uint8_t)Y; OAMptr[2] = SprName + sprptr[3]; OAMptr[3] = SprAttr ^ (sprptr[0] & 0xc0); // XXX: Carry from SprName addition? *OAMptr2 &= ~(3 << offset); if (X & 0x100) *OAMptr2 |= 1 << offset; if (sprptr[0] & 0x20) *OAMptr2 |= 2 << offset; OAMptr += 4; SprCount--; offset = (offset + 2) & 6; if (offset == 0) OAMptr2++; } } } } else if (SprCount > 0) { OAMptr[0] = (uint8_t)SprX; OAMptr[1] = (uint8_t)SprY; OAMptr[2] = SprName; OAMptr[3] = SprAttr; *OAMptr2 &= ~(3 << offset); if (SprX & 0x100) *OAMptr2 |= 3 << offset; else *OAMptr2 |= 2 << offset; OAMptr += 4; SprCount--; offset = (offset + 2) & 6; if (offset == 0) OAMptr2++; } } } } // XXX: Copy to OAM? I doubt it. } static void C4DoScaleRotate(int row_padding) { int16_t A, B, C, D; // Calculate matrix int32_t XScale = READ_WORD(Memory.C4RAM + 0x1f8f); if (XScale & 0x8000) XScale = 0x7fff; int32_t YScale = READ_WORD(Memory.C4RAM + 0x1f92); if (YScale & 0x8000) YScale = 0x7fff; if (READ_WORD(Memory.C4RAM + 0x1f80) == 0) { // no rotation // XXX: only do this for C and D? // XXX: and then only when YScale is 0x1000? A = (int16_t)XScale; B = 0; C = 0; D = (int16_t)YScale; } else if (READ_WORD(Memory.C4RAM + 0x1f80) == 128) // 90 degree rotation { // XXX: Really do this? A = 0; B = (int16_t)(-YScale); C = (int16_t)XScale; D = 0; } else if (READ_WORD(Memory.C4RAM + 0x1f80) == 256) // 180 degree rotation { // XXX: Really do this? A = (int16_t)(-XScale); B = 0; C = 0; D = (int16_t)(-YScale); } else if (READ_WORD(Memory.C4RAM + 0x1f80) == 384) // 270 degree rotation { // XXX: Really do this? A = 0; B = (int16_t)YScale; C = (int16_t)(-XScale); D = 0; } else { A = (int16_t)SAR16(C4CosTable[READ_WORD(Memory.C4RAM + 0x1f80) & 0x1ff] * XScale, 15); B = (int16_t)(-SAR16(C4SinTable[READ_WORD(Memory.C4RAM + 0x1f80) & 0x1ff] * YScale, 15)); C = (int16_t)SAR16(C4SinTable[READ_WORD(Memory.C4RAM + 0x1f80) & 0x1ff] * XScale, 15); D = (int16_t)SAR16(C4CosTable[READ_WORD(Memory.C4RAM + 0x1f80) & 0x1ff] * YScale, 15); } // Calculate Pixel Resolution uint8_t w = Memory.C4RAM[0x1f89] & ~7; uint8_t h = Memory.C4RAM[0x1f8c] & ~7; // printf("%dx%d XScale=%04x YScale=%04x angle=%03x\n", w, h, XScale, YScale, READ_WORD(Memory.C4RAM+0x1f80)&0x1ff); // printf("Matrix: [%10g %10g] [%04x %04x]\n", A/4096.0, B/4096.0, A&0xffff, B&0xffff); // printf(" [%10g %10g] [%04x %04x]\n", C/4096.0, D/4096.0, C&0xffff, D&0xffff); // Clear the output RAM memset(Memory.C4RAM, 0, (w + row_padding / 4)*h / 2); int32_t Cx = (int16_t)READ_WORD(Memory.C4RAM + 0x1f83); int32_t Cy = (int16_t)READ_WORD(Memory.C4RAM + 0x1f86); // Calculate start position (i.e. (Ox, Oy) = (0, 0)) // The low 12 bits are fractional, so (Cx<<12) gives us the Cx we want in // the function. We do Cx*A etc normally because the matrix parameters // already have the fractional parts. int32_t LineX = (Cx << 12) - Cx * A - Cx * B; int32_t LineY = (Cy << 12) - Cy * C - Cy * D; // Start loop uint32_t X, Y; uint8_t byte; int outidx = 0; int x, y; uint8_t bit = 0x80; for (y = 0; y < h; y++) { X = LineX; Y = LineY; for (x = 0; x < w; x++) { if ((X >> 12) >= w || (Y >> 12) >= h) byte = 0; else { uint32_t addr = (Y >> 12) * w + (X >> 12); byte = Memory.C4RAM[0x600 + (addr >> 1)]; if (addr & 1) byte >>= 4; } // De-bitplanify if (byte & 1) Memory.C4RAM[outidx] |= bit; if (byte & 2) Memory.C4RAM[outidx + 1] |= bit; if (byte & 4) Memory.C4RAM[outidx + 16] |= bit; if (byte & 8) Memory.C4RAM[outidx + 17] |= bit; bit >>= 1; if (bit == 0) { bit = 0x80; outidx += 32; } X += A; // Add 1 to output x => add an A and a C Y += C; } outidx += 2 + row_padding; if (outidx & 0x10) outidx &= ~0x10; else outidx -= w * 4 + row_padding; LineX += B; // Add 1 to output y => add a B and a D LineY += D; } } static void C4DrawLine(int32_t X1, int32_t Y1, int16_t Z1, int32_t X2, int32_t Y2, int16_t Z2, uint8_t Color) { // Transform coordinates C4WFXVal = (int16_t)X1; C4WFYVal = (int16_t)Y1; C4WFZVal = Z1; C4WFScale = Memory.C4RAM[0x1f90]; C4WFX2Val = Memory.C4RAM[0x1f86]; C4WFY2Val = Memory.C4RAM[0x1f87]; C4WFDist = Memory.C4RAM[0x1f88]; C4TransfWireFrame2(); X1 = (C4WFXVal + 48) << 8; Y1 = (C4WFYVal + 48) << 8; C4WFXVal = (int16_t)X2; C4WFYVal = (int16_t)Y2; C4WFZVal = Z2; C4TransfWireFrame2(); X2 = (C4WFXVal + 48) << 8; Y2 = (C4WFYVal + 48) << 8; // get line info C4WFXVal = (int16_t)(X1 >> 8); C4WFYVal = (int16_t)(Y1 >> 8); C4WFX2Val = (int16_t)(X2 >> 8); C4WFY2Val = (int16_t)(Y2 >> 8); C4CalcWireFrame(); X2 = (int16_t)C4WFXVal; Y2 = (int16_t)C4WFYVal; // render line int i; for (i = C4WFDist ? C4WFDist : 1; i > 0; i--) { //.loop if (X1 > 0xff && Y1 > 0xff && X1 < 0x6000 && Y1 < 0x6000) { uint16_t addr = ((X1 & ~0x7ff) + (Y1 & ~0x7ff) * 12 + (Y1 & 0x700)) >> 7; addr = (((Y1 >> 8) >> 3) << 8) - (((Y1 >> 8) >> 3) << 6) + ((( X1 >> 8) >> 3) << 4) + ((Y1 >> 8) & 7) * 2; uint8_t bit = 0x80 >> ((X1 >> 8) & 7); Memory.C4RAM[addr + 0x300] &= ~bit; Memory.C4RAM[addr + 0x301] &= ~bit; if (Color & 1) Memory.C4RAM[addr + 0x300] |= bit; if (Color & 2) Memory.C4RAM[addr + 0x301] |= bit; } X1 += X2; Y1 += Y2; } } static void C4DrawWireFrame(void) { uint8_t* line = S9xGetMemPointer(READ_3WORD(Memory.C4RAM + 0x1f80)); uint8_t* point1, *point2; int16_t X1, Y1, Z1; int16_t X2, Y2, Z2; uint8_t Color; int i; for (i = Memory.C4RAM[0x0295]; i > 0; i--, line += 5) { if (line[0] == 0xff && line[1] == 0xff) { uint8_t* tmp = line - 5; while (line[2] == 0xff && line[3] == 0xff) tmp -= 5; point1 = S9xGetMemPointer((Memory.C4RAM[0x1f82] << 16) | (tmp[2] << 8) | tmp[3]); } else point1 = S9xGetMemPointer((Memory.C4RAM[0x1f82] << 16) | (line[0] << 8) | line[1]); point2 = S9xGetMemPointer((Memory.C4RAM[0x1f82] << 16) | (line[2] << 8) | line[3]); X1 = (point1[0] << 8) | point1[1]; Y1 = (point1[2] << 8) | point1[3]; Z1 = (point1[4] << 8) | point1[5]; X2 = (point2[0] << 8) | point2[1]; Y2 = (point2[2] << 8) | point2[3]; Z2 = (point2[4] << 8) | point2[5]; Color = line[4]; C4DrawLine(X1, Y1, Z1, X2, Y2, Z2, Color); } } static void C4TransformLines(void) { C4WFX2Val = Memory.C4RAM[0x1f83]; C4WFY2Val = Memory.C4RAM[0x1f86]; C4WFDist = Memory.C4RAM[0x1f89]; C4WFScale = Memory.C4RAM[0x1f8c]; int i; // transform vertices uint8_t* ptr = Memory.C4RAM; { for (i = READ_WORD(Memory.C4RAM + 0x1f80); i > 0; i--, ptr += 0x10) { C4WFXVal = READ_WORD(ptr + 1); C4WFYVal = READ_WORD(ptr + 5); C4WFZVal = READ_WORD(ptr + 9); C4TransfWireFrame(); // displace WRITE_WORD(ptr + 1, C4WFXVal + 0x80); WRITE_WORD(ptr + 5, C4WFYVal + 0x50); } } WRITE_WORD(Memory.C4RAM + 0x600, 23); WRITE_WORD(Memory.C4RAM + 0x602, 0x60); WRITE_WORD(Memory.C4RAM + 0x605, 0x40); WRITE_WORD(Memory.C4RAM + 0x600 + 8, 23); WRITE_WORD(Memory.C4RAM + 0x602 + 8, 0x60); WRITE_WORD(Memory.C4RAM + 0x605 + 8, 0x40); ptr = Memory.C4RAM + 0xb02; uint8_t* ptr2 = Memory.C4RAM; { int i; for (i = READ_WORD(Memory.C4RAM + 0xb00); i > 0; i--, ptr += 2, ptr2 += 8) { C4WFXVal = READ_WORD(Memory.C4RAM + (ptr[0] << 4) + 1); C4WFYVal = READ_WORD(Memory.C4RAM + (ptr[0] << 4) + 5); C4WFX2Val = READ_WORD(Memory.C4RAM + (ptr[1] << 4) + 1); C4WFY2Val = READ_WORD(Memory.C4RAM + (ptr[1] << 4) + 5); C4CalcWireFrame(); WRITE_WORD(ptr2 + 0x600, C4WFDist ? C4WFDist : 1); WRITE_WORD(ptr2 + 0x602, C4WFXVal); WRITE_WORD(ptr2 + 0x605, C4WFYVal); } } } static void C4BitPlaneWave() { static uint16_t bmpdata[] = { 0x0000, 0x0002, 0x0004, 0x0006, 0x0008, 0x000A, 0x000C, 0x000E, 0x0200, 0x0202, 0x0204, 0x0206, 0x0208, 0x020A, 0x020C, 0x020E, 0x0400, 0x0402, 0x0404, 0x0406, 0x0408, 0x040A, 0x040C, 0x040E, 0x0600, 0x0602, 0x0604, 0x0606, 0x0608, 0x060A, 0x060C, 0x060E, 0x0800, 0x0802, 0x0804, 0x0806, 0x0808, 0x080A, 0x080C, 0x080E }; uint8_t* dst = Memory.C4RAM; uint32_t waveptr = Memory.C4RAM[0x1f83]; uint16_t mask1 = 0xc0c0; uint16_t mask2 = 0x3f3f; int i, j; for (j = 0; j < 0x10; j++) { do { int16_t height = -((int8_t)Memory.C4RAM[waveptr + 0xb00]) - 16; for (i = 0; i < 40; i++) { uint16_t tmp = READ_WORD(dst + bmpdata[i]) & mask2; if (height >= 0) { if (height < 8) tmp |= mask1 & READ_WORD(Memory.C4RAM + 0xa00 + height * 2); else tmp |= mask1 & 0xff00; } WRITE_WORD(dst + bmpdata[i], tmp); height++; } waveptr = (waveptr + 1) & 0x7f; mask1 = (mask1 >> 2) | (mask1 << 6); mask2 = (mask2 >> 2) | (mask2 << 6); } while (mask1 != 0xc0c0); dst += 16; do { int i; int16_t height = -((int8_t)Memory.C4RAM[waveptr + 0xb00]) - 16; for (i = 0; i < 40; i++) { uint16_t tmp = READ_WORD(dst + bmpdata[i]) & mask2; if (height >= 0) { if (height < 8) tmp |= mask1 & READ_WORD(Memory.C4RAM + 0xa10 + height * 2); else tmp |= mask1 & 0xff00; } WRITE_WORD(dst + bmpdata[i], tmp); height++; } waveptr = (waveptr + 1) & 0x7f; mask1 = (mask1 >> 2) | (mask1 << 6); mask2 = (mask2 >> 2) | (mask2 << 6); } while (mask1 != 0xc0c0); dst += 16; } } static void C4SprDisintegrate() { uint8_t width, height; uint32_t StartX, StartY; uint8_t* src; int32_t scaleX, scaleY; int32_t Cx, Cy; width = Memory.C4RAM[0x1f89]; height = Memory.C4RAM[0x1f8c]; Cx = (int16_t)READ_WORD(Memory.C4RAM + 0x1f80); Cy = (int16_t)READ_WORD(Memory.C4RAM + 0x1f83); scaleX = (int16_t)READ_WORD(Memory.C4RAM + 0x1f86); scaleY = (int16_t)READ_WORD(Memory.C4RAM + 0x1f8f); StartX = -Cx * scaleX + (Cx << 8); StartY = -Cy * scaleY + (Cy << 8); src = Memory.C4RAM + 0x600; memset(Memory.C4RAM, 0, width * height / 2); uint32_t x, y, i, j; for (y = StartY, i = 0; i < height; i++, y += scaleY) { for (x = StartX, j = 0; j < width; j++, x += scaleX) { if ((x >> 8) < width && (y >> 8) < height && (y >> 8)*width + (x >> 8) < 0x2000) { uint8_t pixel = (j & 1) ? (*src >> 4) : *src; int idx = (y >> 11) * width * 4 + (x >> 11) * 32 + ((y >> 8) & 7) * 2; uint8_t mask = 0x80 >> ((x >> 8) & 7); if (pixel & 1) Memory.C4RAM[idx] |= mask; if (pixel & 2) Memory.C4RAM[idx + 1] |= mask; if (pixel & 4) Memory.C4RAM[idx + 16] |= mask; if (pixel & 8) Memory.C4RAM[idx + 17] |= mask; } if (j & 1) src++; } } } static void S9xC4ProcessSprites() { switch (Memory.C4RAM[0x1f4d]) { case 0x00: // Build OAM C4ConvOAM(); break; case 0x03: // Scale/Rotate C4DoScaleRotate(0); break; case 0x05: // Transform Lines C4TransformLines(); break; case 0x07: // Scale/Rotate C4DoScaleRotate(64); break; case 0x08: // Draw wireframe C4DrawWireFrame(); break; case 0x0b: // Disintegrate C4SprDisintegrate(); break; case 0x0c: // Wave C4BitPlaneWave(); break; default: break; } } void S9xSetC4(uint8_t byte, uint16_t Address) { int i; Memory.C4RAM [Address - 0x6000] = byte; if (Address == 0x7f4f) { if (Memory.C4RAM[0x1f4d] == 0x0e && byte < 0x40 && (byte & 3) == 0) Memory.C4RAM[0x1f80] = byte >> 2; else { switch (byte) { case 0x00: // Sprite S9xC4ProcessSprites(); break; case 0x01: // Draw wireframe memset(Memory.C4RAM + 0x300, 0, 16 * 12 * 3 * 4); C4DrawWireFrame(); break; case 0x05: // Propulsion (?) { int32_t tmp = 0x10000; if (READ_WORD(Memory.C4RAM + 0x1f83)) tmp = SAR32((tmp / READ_WORD(Memory.C4RAM + 0x1f83)) * READ_WORD( Memory.C4RAM + 0x1f81), 8); WRITE_WORD(Memory.C4RAM + 0x1f80, (uint16_t)tmp); } break; case 0x0d: // Set vector length C41FXVal = READ_WORD(Memory.C4RAM + 0x1f80); C41FYVal = READ_WORD(Memory.C4RAM + 0x1f83); C41FDistVal = READ_WORD(Memory.C4RAM + 0x1f86); C4Op0D(); WRITE_WORD(Memory.C4RAM + 0x1f89, C41FXVal); WRITE_WORD(Memory.C4RAM + 0x1f8c, C41FYVal); break; case 0x10: // Polar to rectangluar { int32_t tmp = SAR32((int32_t)READ_WORD(Memory.C4RAM + 0x1f83) * C4CosTable[READ_WORD(Memory.C4RAM + 0x1f80) & 0x1ff] * 2, 16); WRITE_3WORD(Memory.C4RAM + 0x1f86, tmp); tmp = SAR32((int32_t)READ_WORD(Memory.C4RAM + 0x1f83) * C4SinTable[READ_WORD( Memory.C4RAM + 0x1f80) & 0x1ff] * 2, 16); WRITE_3WORD(Memory.C4RAM + 0x1f89, (tmp - SAR32(tmp, 6))); } break; case 0x13: // Polar to rectangluar { int32_t tmp = SAR32((int32_t)READ_WORD(Memory.C4RAM + 0x1f83) * C4CosTable[READ_WORD(Memory.C4RAM + 0x1f80) & 0x1ff] * 2, 8); WRITE_3WORD(Memory.C4RAM + 0x1f86, tmp); tmp = SAR32((int32_t)READ_WORD(Memory.C4RAM + 0x1f83) * C4SinTable[READ_WORD( Memory.C4RAM + 0x1f80) & 0x1ff] * 2, 8); WRITE_3WORD(Memory.C4RAM + 0x1f89, tmp); } break; case 0x15: // Pythagorean C41FXVal = READ_WORD(Memory.C4RAM + 0x1f80); C41FYVal = READ_WORD(Memory.C4RAM + 0x1f83); C41FDist = (int16_t)sqrt((double)C41FXVal * C41FXVal + (double)C41FYVal * C41FYVal); WRITE_WORD(Memory.C4RAM + 0x1f80, C41FDist); break; case 0x1f: // atan C41FXVal = READ_WORD(Memory.C4RAM + 0x1f80); C41FYVal = READ_WORD(Memory.C4RAM + 0x1f83); C4Op1F(); WRITE_WORD(Memory.C4RAM + 0x1f86, C41FAngleRes); break; case 0x22: // Trapezoid { int16_t angle1 = READ_WORD(Memory.C4RAM + 0x1f8c) & 0x1ff; int16_t angle2 = READ_WORD(Memory.C4RAM + 0x1f8f) & 0x1ff; int32_t tan1 = (C4CosTable[angle1] != 0) ? ((((int32_t)C4SinTable[angle1]) << 16) / C4CosTable[angle1]) : 0x80000000; int32_t tan2 = (C4CosTable[angle2] != 0) ? ((((int32_t)C4SinTable[angle2]) << 16) / C4CosTable[angle2]) : 0x80000000; int16_t y = READ_WORD(Memory.C4RAM + 0x1f83) - READ_WORD(Memory.C4RAM + 0x1f89); int16_t left, right; int j; for (j = 0; j < 225; j++) { if (y >= 0) { left = SAR32((int32_t)tan1 * y, 16) - READ_WORD(Memory.C4RAM + 0x1f80) + READ_WORD(Memory.C4RAM + 0x1f86); right = SAR32((int32_t)tan2 * y, 16) - READ_WORD(Memory.C4RAM + 0x1f80) + READ_WORD(Memory.C4RAM + 0x1f86) + READ_WORD(Memory.C4RAM + 0x1f93); if (left < 0 && right < 0) { left = 1; right = 0; } else if (left < 0) left = 0; else if (right < 0) right = 0; if (left > 255 && right > 255) { left = 255; right = 254; } else if (left > 255) left = 255; else if (right > 255) right = 255; } else { left = 1; right = 0; } Memory.C4RAM[j + 0x800] = (uint8_t)left; Memory.C4RAM[j + 0x900] = (uint8_t)right; y++; } } break; case 0x25: // Multiply { int32_t foo = READ_3WORD(Memory.C4RAM + 0x1f80); int32_t bar = READ_3WORD(Memory.C4RAM + 0x1f83); foo *= bar; WRITE_3WORD(Memory.C4RAM + 0x1f80, foo); } break; case 0x2d: // Transform Coords C4WFXVal = READ_WORD(Memory.C4RAM + 0x1f81); C4WFYVal = READ_WORD(Memory.C4RAM + 0x1f84); C4WFZVal = READ_WORD(Memory.C4RAM + 0x1f87); C4WFX2Val = Memory.C4RAM[0x1f89]; C4WFY2Val = Memory.C4RAM[0x1f8a]; C4WFDist = Memory.C4RAM[0x1f8b]; C4WFScale = READ_WORD(Memory.C4RAM + 0x1f90); C4TransfWireFrame2(); WRITE_WORD(Memory.C4RAM + 0x1f80, C4WFXVal); WRITE_WORD(Memory.C4RAM + 0x1f83, C4WFYVal); break; case 0x40: // Sum { int i; uint16_t sum = 0; for (i = 0; i < 0x800; sum += Memory.C4RAM[i++]); WRITE_WORD(Memory.C4RAM + 0x1f80, sum); } break; case 0x54: // Square { int64_t a = SAR64((int64_t)READ_3WORD(Memory.C4RAM + 0x1f80) << 40, 40); // printf("%08X%08X\n", (uint32_t)(a>>32), (uint32_t)(a&0xFFFFFFFF)); a *= a; // printf("%08X%08X\n", (uint32_t)(a>>32), (uint32_t)(a&0xFFFFFFFF)); WRITE_3WORD(Memory.C4RAM + 0x1f83, a); WRITE_3WORD(Memory.C4RAM + 0x1f86, (a >> 24)); } break; case 0x5c: // Immediate Reg for (i = 0; i < 12 * 4; i++) Memory.C4RAM [i] = C4TestPattern [i]; break; case 0x89: // Immediate ROM Memory.C4RAM [0x1f80] = 0x36; Memory.C4RAM [0x1f81] = 0x43; Memory.C4RAM [0x1f82] = 0x05; break; default: break; } } } else if (Address == 0x7f47) { // memmove required: Can overlap arbitrarily [Neb] memmove(Memory.C4RAM + (READ_WORD(Memory.C4RAM + 0x1f45) & 0x1fff), S9xGetMemPointer(READ_3WORD(Memory.C4RAM + 0x1f40)), READ_WORD(Memory.C4RAM + 0x1f43)); } } int16_t C4SinTable[512] = { 0, 402, 804, 1206, 1607, 2009, 2410, 2811, 3211, 3611, 4011, 4409, 4808, 5205, 5602, 5997, 6392, 6786, 7179, 7571, 7961, 8351, 8739, 9126, 9512, 9896, 10278, 10659, 11039, 11416, 11793, 12167, 12539, 12910, 13278, 13645, 14010, 14372, 14732, 15090, 15446, 15800, 16151, 16499, 16846, 17189, 17530, 17869, 18204, 18537, 18868, 19195, 19519, 19841, 20159, 20475, 20787, 21097, 21403, 21706, 22005, 22301, 22594, 22884, 23170, 23453, 23732, 24007, 24279, 24547, 24812, 25073, 25330, 25583, 25832, 26077, 26319, 26557, 26790, 27020, 27245, 27466, 27684, 27897, 28106, 28310, 28511, 28707, 28898, 29086, 29269, 29447, 29621, 29791, 29956, 30117, 30273, 30425, 30572, 30714, 30852, 30985, 31114, 31237, 31357, 31471, 31581, 31685, 31785, 31881, 31971, 32057, 32138, 32214, 32285, 32351, 32413, 32469, 32521, 32568, 32610, 32647, 32679, 32706, 32728, 32745, 32758, 32765, 32767, 32765, 32758, 32745, 32728, 32706, 32679, 32647, 32610, 32568, 32521, 32469, 32413, 32351, 32285, 32214, 32138, 32057, 31971, 31881, 31785, 31685, 31581, 31471, 31357, 31237, 31114, 30985, 30852, 30714, 30572, 30425, 30273, 30117, 29956, 29791, 29621, 29447, 29269, 29086, 28898, 28707, 28511, 28310, 28106, 27897, 27684, 27466, 27245, 27020, 26790, 26557, 26319, 26077, 25832, 25583, 25330, 25073, 24812, 24547, 24279, 24007, 23732, 23453, 23170, 22884, 22594, 22301, 22005, 21706, 21403, 21097, 20787, 20475, 20159, 19841, 19519, 19195, 18868, 18537, 18204, 17869, 17530, 17189, 16846, 16499, 16151, 15800, 15446, 15090, 14732, 14372, 14010, 13645, 13278, 12910, 12539, 12167, 11793, 11416, 11039, 10659, 10278, 9896, 9512, 9126, 8739, 8351, 7961, 7571, 7179, 6786, 6392, 5997, 5602, 5205, 4808, 4409, 4011, 3611, 3211, 2811, 2410, 2009, 1607, 1206, 804, 402, 0, -402, -804, -1206, -1607, -2009, -2410, -2811, -3211, -3611, -4011, -4409, -4808, -5205, -5602, -5997, -6392, -6786, -7179, -7571, -7961, -8351, -8739, -9126, -9512, -9896, -10278, -10659, -11039, -11416, -11793, -12167, -12539, -12910, -13278, -13645, -14010, -14372, -14732, -15090, -15446, -15800, -16151, -16499, -16846, -17189, -17530, -17869, -18204, -18537, -18868, -19195, -19519, -19841, -20159, -20475, -20787, -21097, -21403, -21706, -22005, -22301, -22594, -22884, -23170, -23453, -23732, -24007, -24279, -24547, -24812, -25073, -25330, -25583, -25832, -26077, -26319, -26557, -26790, -27020, -27245, -27466, -27684, -27897, -28106, -28310, -28511, -28707, -28898, -29086, -29269, -29447, -29621, -29791, -29956, -30117, -30273, -30425, -30572, -30714, -30852, -30985, -31114, -31237, -31357, -31471, -31581, -31685, -31785, -31881, -31971, -32057, -32138, -32214, -32285, -32351, -32413, -32469, -32521, -32568, -32610, -32647, -32679, -32706, -32728, -32745, -32758, -32765, -32767, -32765, -32758, -32745, -32728, -32706, -32679, -32647, -32610, -32568, -32521, -32469, -32413, -32351, -32285, -32214, -32138, -32057, -31971, -31881, -31785, -31685, -31581, -31471, -31357, -31237, -31114, -30985, -30852, -30714, -30572, -30425, -30273, -30117, -29956, -29791, -29621, -29447, -29269, -29086, -28898, -28707, -28511, -28310, -28106, -27897, -27684, -27466, -27245, -27020, -26790, -26557, -26319, -26077, -25832, -25583, -25330, -25073, -24812, -24547, -24279, -24007, -23732, -23453, -23170, -22884, -22594, -22301, -22005, -21706, -21403, -21097, -20787, -20475, -20159, -19841, -19519, -19195, -18868, -18537, -18204, -17869, -17530, -17189, -16846, -16499, -16151, -15800, -15446, -15090, -14732, -14372, -14010, -13645, -13278, -12910, -12539, -12167, -11793, -11416, -11039, -10659, -10278, -9896, -9512, -9126, -8739, -8351, -7961, -7571, -7179, -6786, -6392, -5997, -5602, -5205, -4808, -4409, -4011, -3611, -3211, -2811, -2410, -2009, -1607, -1206, -804, -402 }; int16_t C4CosTable[512] = { 32767, 32765, 32758, 32745, 32728, 32706, 32679, 32647, 32610, 32568, 32521, 32469, 32413, 32351, 32285, 32214, 32138, 32057, 31971, 31881, 31785, 31685, 31581, 31471, 31357, 31237, 31114, 30985, 30852, 30714, 30572, 30425, 30273, 30117, 29956, 29791, 29621, 29447, 29269, 29086, 28898, 28707, 28511, 28310, 28106, 27897, 27684, 27466, 27245, 27020, 26790, 26557, 26319, 26077, 25832, 25583, 25330, 25073, 24812, 24547, 24279, 24007, 23732, 23453, 23170, 22884, 22594, 22301, 22005, 21706, 21403, 21097, 20787, 20475, 20159, 19841, 19519, 19195, 18868, 18537, 18204, 17869, 17530, 17189, 16846, 16499, 16151, 15800, 15446, 15090, 14732, 14372, 14010, 13645, 13278, 12910, 12539, 12167, 11793, 11416, 11039, 10659, 10278, 9896, 9512, 9126, 8739, 8351, 7961, 7571, 7179, 6786, 6392, 5997, 5602, 5205, 4808, 4409, 4011, 3611, 3211, 2811, 2410, 2009, 1607, 1206, 804, 402, 0, -402, -804, -1206, -1607, -2009, -2410, -2811, -3211, -3611, -4011, -4409, -4808, -5205, -5602, -5997, -6392, -6786, -7179, -7571, -7961, -8351, -8739, -9126, -9512, -9896, -10278, -10659, -11039, -11416, -11793, -12167, -12539, -12910, -13278, -13645, -14010, -14372, -14732, -15090, -15446, -15800, -16151, -16499, -16846, -17189, -17530, -17869, -18204, -18537, -18868, -19195, -19519, -19841, -20159, -20475, -20787, -21097, -21403, -21706, -22005, -22301, -22594, -22884, -23170, -23453, -23732, -24007, -24279, -24547, -24812, -25073, -25330, -25583, -25832, -26077, -26319, -26557, -26790, -27020, -27245, -27466, -27684, -27897, -28106, -28310, -28511, -28707, -28898, -29086, -29269, -29447, -29621, -29791, -29956, -30117, -30273, -30425, -30572, -30714, -30852, -30985, -31114, -31237, -31357, -31471, -31581, -31685, -31785, -31881, -31971, -32057, -32138, -32214, -32285, -32351, -32413, -32469, -32521, -32568, -32610, -32647, -32679, -32706, -32728, -32745, -32758, -32765, -32767, -32765, -32758, -32745, -32728, -32706, -32679, -32647, -32610, -32568, -32521, -32469, -32413, -32351, -32285, -32214, -32138, -32057, -31971, -31881, -31785, -31685, -31581, -31471, -31357, -31237, -31114, -30985, -30852, -30714, -30572, -30425, -30273, -30117, -29956, -29791, -29621, -29447, -29269, -29086, -28898, -28707, -28511, -28310, -28106, -27897, -27684, -27466, -27245, -27020, -26790, -26557, -26319, -26077, -25832, -25583, -25330, -25073, -24812, -24547, -24279, -24007, -23732, -23453, -23170, -22884, -22594, -22301, -22005, -21706, -21403, -21097, -20787, -20475, -20159, -19841, -19519, -19195, -18868, -18537, -18204, -17869, -17530, -17189, -16846, -16499, -16151, -15800, -15446, -15090, -14732, -14372, -14010, -13645, -13278, -12910, -12539, -12167, -11793, -11416, -11039, -10659, -10278, -9896, -9512, -9126, -8739, -8351, -7961, -7571, -7179, -6786, -6392, -5997, -5602, -5205, -4808, -4409, -4011, -3611, -3211, -2811, -2410, -2009, -1607, -1206, -804, -402, 0, 402, 804, 1206, 1607, 2009, 2410, 2811, 3211, 3611, 4011, 4409, 4808, 5205, 5602, 5997, 6392, 6786, 7179, 7571, 7961, 8351, 8739, 9126, 9512, 9896, 10278, 10659, 11039, 11416, 11793, 12167, 12539, 12910, 13278, 13645, 14010, 14372, 14732, 15090, 15446, 15800, 16151, 16499, 16846, 17189, 17530, 17869, 18204, 18537, 18868, 19195, 19519, 19841, 20159, 20475, 20787, 21097, 21403, 21706, 22005, 22301, 22594, 22884, 23170, 23453, 23732, 24007, 24279, 24547, 24812, 25073, 25330, 25583, 25832, 26077, 26319, 26557, 26790, 27020, 27245, 27466, 27684, 27897, 28106, 28310, 28511, 28707, 28898, 29086, 29269, 29447, 29621, 29791, 29956, 30117, 30273, 30425, 30572, 30714, 30852, 30985, 31114, 31237, 31357, 31471, 31581, 31685, 31785, 31881, 31971, 32057, 32138, 32214, 32285, 32351, 32413, 32469, 32521, 32568, 32610, 32647, 32679, 32706, 32728, 32745, 32758, 32765 };