[picodrive.git] / Pico / cd / gfx_cd.c


#include "../PicoInt.h"

#define rot_comp Pico_mcd->rot_comp

static const int Table_Rot_Time[] =
{
	0x00054000, 0x00048000, 0x00040000, 0x00036000,          //; 008-032               ; briefing - sprite
	0x0002E000, 0x00028000, 0x00024000, 0x00022000,          //; 036-064               ; arbre souvent
	0x00021000, 0x00020000, 0x0001E000, 0x0001B800,          //; 068-096               ; map thunderstrike
	0x00019800, 0x00017A00, 0x00015C00, 0x00013E00,          //; 100-128               ; logo défoncé

	0x00012000, 0x00011800, 0x00011000, 0x00010800,          //; 132-160               ; briefing - map
	0x00010000, 0x0000F800, 0x0000F000, 0x0000E800,          //; 164-192
	0x0000E000, 0x0000D800, 0x0000D000, 0x0000C800,          //; 196-224
	0x0000C000, 0x0000B800, 0x0000B000, 0x0000A800,          //; 228-256               ; batman visage

	0x0000A000, 0x00009F00, 0x00009E00, 0x00009D00,          //; 260-288
	0x00009C00, 0x00009B00, 0x00009A00, 0x00009900,          //; 292-320
	0x00009800, 0x00009700, 0x00009600, 0x00009500,          //; 324-352
	0x00009400, 0x00009300, 0x00009200, 0x00009100,          //; 356-384

	0x00009000, 0x00008F00, 0x00008E00, 0x00008D00,          //; 388-416
	0x00008C00, 0x00008B00, 0x00008A00, 0x00008900,          //; 420-448
	0x00008800, 0x00008700, 0x00008600, 0x00008500,          //; 452-476
	0x00008400, 0x00008300, 0x00008200, 0x00008100,          //; 480-512
};


static void gfx_cd_start(void)
{
	int upd_len;

	dprintf("gfx_cd_start()");

	// rot_comp.XD_Mul = ((rot_comp.Reg_5C & 0x1f) + 1) * 4; // unused
	rot_comp.Function = (rot_comp.Reg_58 & 7) | (Pico_mcd->s68k_regs[3] & 0x18);	// Jmp_Adr
	// rot_comp.Buffer_Adr = (rot_comp.Reg_5E & 0xfff8) << 2; // unused?
	rot_comp.YD = (rot_comp.Reg_60 >> 3) & 7;
	rot_comp.Vector_Adr = (rot_comp.Reg_66 & 0xfffe) << 2;

	upd_len = (rot_comp.Reg_62 >> 3) & 0x3f;
	upd_len = Table_Rot_Time[upd_len];
	rot_comp.Draw_Speed = rot_comp.Float_Part = upd_len;

	rot_comp.Reg_58 |= 0x8000;	// Stamp_Size,  we start a new GFX operation

	switch (rot_comp.Reg_58 & 6)	// Scr_16?
	{
		case 0:	// ?
			rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xff80) << 2;
			break;
		case 2: // .Dot_32
			rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xffe0) << 2;
			break;
		case 4: // .Scr_16
			rot_comp.Stamp_Map_Adr = 0x20000;
			break;
		case 6: // .Scr_16_Dot_32
			rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xe000) << 2;
			break;
	}

	gfx_cd_update();
}


static void gfx_completed(void)
{
	rot_comp.Reg_58 &= 0x7fff;	// Stamp_Size
	rot_comp.Reg_64  = 0;
	if (Pico_mcd->s68k_regs[0x33] & (1<<1))
	{
		dprintf("gfx_cd irq 1");
		SekInterruptS68k(1);
	}
}


static void gfx_do(unsigned int func, unsigned short *stamp_base, unsigned int H_Dot)
{
	unsigned int eax, ebx, ecx, edx, esi, edi, pixel;
	unsigned int XD, Buffer_Adr;
	int DYXS;

	XD = rot_comp.Reg_60 & 7;
	Buffer_Adr = ((rot_comp.Reg_5E & 0xfff8) + rot_comp.YD) << 2;
	ecx = *(unsigned int *)(Pico_mcd->word_ram2M + rot_comp.Vector_Adr);
	edx = ecx >> 16;
	ecx = (ecx & 0xffff) << 8;
	edx <<= 8;
	DYXS = *(int *)(Pico_mcd->word_ram2M + rot_comp.Vector_Adr + 4);
	rot_comp.Vector_Adr += 8;

	// MAKE_IMAGE_LINE
	while (H_Dot)
	{
		if (func & 2)		// mode 32x32 dot
		{
			if (func & 4)	// 16x16 screen
			{
				ebx = ((ecx >> (11+5)) & 0x007f) |
				      ((edx >> (11-2)) & 0x3f80);
			}
			else		// 1x1 screen
			{
				ebx = ((ecx >> (11+5)) & 0x07) |
				      ((edx >> (11+2)) & 0x38);
			}
		}
		else			// mode 16x16 dot
		{
			if (func & 4)	// 16x16 screen
			{
				ebx = ((ecx >> (11+4)) & 0x00ff) |
				      ((edx >> (11-4)) & 0xff00);
			}
			else		// 1x1 screen
			{
				ebx = ((ecx >> (11+4)) & 0x0f) |
				      ((edx >> (11+0)) & 0xf0);
			}
		}

		// MAKE_IMAGE_PIXEL
		if (!(func & 1))	// NOT TILED
		{
			int mask = (func & 4) ? 0x00800000 : 0x00f80000;
			if ((ecx | edx) & mask)
			{
				if (func & 0x18) goto Next_Pixel;
				pixel = 0;
				goto Pixel_Out;
			}
		}

		edi = stamp_base[ebx];// | (stamp_base[ebx+1] << 16);
		esi = (edi & 0x7ff) << 7;
		if (!esi) { pixel = 0; goto Pixel_Out; }
		edi >>= (11+1);
		edi &= (0x1c>>1);
		eax = ecx;
		ebx = edx;
		if (func & 2) edi |= 1;	// 32 dots?
		switch (edi)
		{
			case 0x00:	// No_Flip_0, 16x16 dots
				ebx = (ebx >> 9) & 0x3c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x1000;		// bswap
				eax = ((eax >> 8) & 0x40) + ebx;
				break;
			case 0x01:	// No_Flip_0, 32x32 dots
				ebx = (ebx >> 9) & 0x7c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x1000;		// bswap
				eax = ((eax >> 7) & 0x180) + ebx;
				break;
			case 0x02:	// No_Flip_90, 16x16 dots
				eax = (eax >> 9) & 0x3c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x2800;		// bswap
				eax += ((ebx >> 8) & 0x40) ^ 0x40;
				break;
			case 0x03:	// No_Flip_90, 32x32 dots
				eax = (eax >> 9) & 0x7c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x2800;		// bswap
				eax += ((ebx >> 7) & 0x180) ^ 0x180;
				break;
			case 0x04:	// No_Flip_180, 16x16 dots
				ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x2800;		// bswap and flip
				eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
				break;
			case 0x05:	// No_Flip_180, 32x32 dots
				ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x2800;		// bswap and flip
				eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
				break;
			case 0x06:	// No_Flip_270, 16x16 dots
				eax = ((eax >> 9) & 0x3c) ^ 0x3c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x1000;		// bswap
				eax += (ebx >> 8) & 0x40;
				break;
			case 0x07:	// No_Flip_270, 32x32 dots
				eax = ((eax >> 9) & 0x7c) ^ 0x7c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x1000;		// bswap
				eax += (ebx >> 7) & 0x180;
				break;
			case 0x08:	// Flip_0, 16x16 dots
				ebx = (ebx >> 9) & 0x3c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x2800;		// bswap, flip
				eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
				break;
			case 0x09:	// Flip_0, 32x32 dots
				ebx = (ebx >> 9) & 0x7c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x2800;		// bswap, flip
				eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
				break;
			case 0x0a:	// Flip_90, 16x16 dots
				eax = ((eax >> 9) & 0x3c) ^ 0x3c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x2800;		// bswap, flip
				eax += ((ebx >> 8) & 0x40) ^ 0x40;
				break;
			case 0x0b:	// Flip_90, 32x32 dots
				eax = ((eax >> 9) & 0x7c) ^ 0x7c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x2800;		// bswap, flip
				eax += ((ebx >> 7) & 0x180) ^ 0x180;
				break;
			case 0x0c:	// Flip_180, 16x16 dots
				ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x1000;		// bswap
				eax = ((eax >> 8) & 0x40) + ebx;
				break;
			case 0x0d:	// Flip_180, 32x32 dots
				ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x1000;		// bswap
				eax = ((eax >> 7) & 0x180) + ebx;
				break;
			case 0x0e:	// Flip_270, 16x16 dots
				eax = (eax >> 9) & 0x3c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x1000;		// bswap, flip
				eax += (ebx >> 8) & 0x40;
				break;
			case 0x0f:	// Flip_270, 32x32 dots
				eax = (eax >> 9) & 0x7c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x1000;		// bswap, flip
				eax += (ebx >> 7) & 0x180;
				break;
		}

		pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
		if (!(edi & 0x800)) pixel >>= 4;
		else pixel &= 0x0f;

Pixel_Out:
		if (!pixel && (func & 0x18)) goto Next_Pixel;
		esi = Buffer_Adr + ((XD>>1)^1);				// pixel addr
		eax = *(Pico_mcd->word_ram2M + esi);			// old pixel
		if (XD & 1)
		{
			if ((eax & 0x0f) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite
			*(Pico_mcd->word_ram2M + esi) = pixel | (eax & 0xf0);
		}
		else
		{
			if ((eax & 0xf0) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite
			*(Pico_mcd->word_ram2M + esi) = (pixel << 4) | (eax & 0xf);
		}


Next_Pixel:
		ecx += (DYXS << 16) >> 16;	// rot_comp.DXS;
		edx +=  DYXS >> 16;		// rot_comp.DYS;
		XD++;
		if (XD >= 8)
		{
			Buffer_Adr += ((rot_comp.Reg_5C & 0x1f) + 1) << 5;
			XD = 0;
		}
		H_Dot--;
	}
	// end while


// nothing_to_draw:
	rot_comp.YD++;
	// rot_comp.V_Dot--; // will be done by caller
}


void gfx_cd_update(void)
{
	int V_Dot = rot_comp.Reg_64 & 0xff;
	int jobs;

	dprintf("gfx_cd_update, Reg_64 = %04x", rot_comp.Reg_64);

	if (!V_Dot)
	{
		gfx_completed();
		return;
	}

	jobs = rot_comp.Float_Part >> 16;

	if (!jobs)
	{
		rot_comp.Float_Part += rot_comp.Draw_Speed;
		return;
	}

	rot_comp.Float_Part &= 0xffff;
	rot_comp.Float_Part += rot_comp.Draw_Speed;

	if (PicoOpt & 0x1000)			// scale/rot enabled
	{
		unsigned int func = rot_comp.Function;
		unsigned int H_Dot = rot_comp.Reg_62 & 0x1ff;
		unsigned short *stamp_base = (unsigned short *) (Pico_mcd->word_ram2M + rot_comp.Stamp_Map_Adr);

		while (jobs--)
		{
			gfx_do(func, stamp_base, H_Dot);	// jmp [Jmp_Adr]:

			V_Dot--;				// dec byte [V_Dot]
			if (V_Dot == 0)
			{
				// GFX_Completed:
				gfx_completed();
				return;
			}
		}
	}
	else
	{
		if (jobs >= V_Dot)
		{
			gfx_completed();
			return;
		}
		V_Dot -= jobs;
	}

	rot_comp.Reg_64 = V_Dot;
}


unsigned int gfx_cd_read(unsigned int a)
{
	unsigned int d = 0;

	switch (a) {
		case 0x58: d = rot_comp.Reg_58; break;
		case 0x5A: d = rot_comp.Reg_5A; break;
		case 0x5C: d = rot_comp.Reg_5C; break;
		case 0x5E: d = rot_comp.Reg_5E; break;
		case 0x60: d = rot_comp.Reg_60; break;
		case 0x62: d = rot_comp.Reg_62; break;
		case 0x64: d = rot_comp.Reg_64; break;
		case 0x66: break;
		default: dprintf("gfx_cd_read FIXME: unexpected address: %02x", a); break;
	}

	dprintf("gfx_cd_read(%02x) = %04x", a, d);

	return d;
}

void gfx_cd_write16(unsigned int a, unsigned int d)
{
	dprintf("gfx_cd_write16(%x, %04x)", a, d);

	switch (a) {
		case 0x58: // .Reg_Stamp_Size
			rot_comp.Reg_58 = d & 7;
			return;

		case 0x5A: // .Reg_Stamp_Adr
			rot_comp.Reg_5A = d & 0xffe0;
			return;

		case 0x5C: // .Reg_IM_VCell_Size
			rot_comp.Reg_5C = d & 0x1f;
			return;

		case 0x5E: // .Reg_IM_Adr
			rot_comp.Reg_5E = d & 0xFFF8;
			return;

		case 0x60: // .Reg_IM_Offset
			rot_comp.Reg_60 = d & 0x3f;
			return;

		case 0x62: // .Reg_IM_HDot_Size
			rot_comp.Reg_62 = d & 0x1ff;
			return;

		case 0x64: // .Reg_IM_VDot_Size
			rot_comp.Reg_64 = d & 0xff;	// V_Dot, must be 32bit?
			return;

		case 0x66: // .Reg_Vector_Adr
			rot_comp.Reg_66 = d & 0xfffe;
			if (Pico_mcd->s68k_regs[3]&4) return; // can't do tanformations in 1M mode
			gfx_cd_start();
			return;

		default: dprintf("gfx_cd_write16 FIXME: unexpected address: %02x", a); return;
	}
}


void gfx_cd_reset(void)
{
	memset(&rot_comp.Reg_58, 0, sizeof(rot_comp));
}


// --------------------------------

#include "cell_map.c"

typedef unsigned short u16;

// check: Heart of the alien, jaguar xj 220
void DmaSlowCell(unsigned int source, unsigned int a, int len, unsigned char inc)
{
  unsigned char *base;
  unsigned int asrc, a2;
  u16 *r;

  base = Pico_mcd->word_ram1M[Pico_mcd->s68k_regs[3]&1];

  switch (Pico.video.type)
  {
    case 1: // vram
      r = Pico.vram;
      for(; len; len--)
      {
        asrc = cell_map(source >> 2) << 2;
        asrc |= source & 2;
        // if(a&1) d=(d<<8)|(d>>8); // ??
        r[a>>1] = *(u16 *)(base + asrc);
	source += 2;
        // AutoIncrement
        a=(u16)(a+inc);
      }
      rendstatus|=0x10;
      break;

    case 3: // cram
      Pico.m.dirtyPal = 1;
      r = Pico.cram;
      for(a2=a&0x7f; len; len--)
      {
        asrc = cell_map(source >> 2) << 2;
        asrc |= source & 2;
        r[a2>>1] = *(u16 *)(base + asrc);
	source += 2;
        // AutoIncrement
        a2+=inc;
        // good dest?
        if(a2 >= 0x80) break;
      }
      a=(a&0xff00)|a2;
      break;

    case 5: // vsram[a&0x003f]=d;
      r = Pico.vsram;
      for(a2=a&0x7f; len; len--)
      {
        asrc = cell_map(source >> 2) << 2;
        asrc |= source & 2;
        r[a2>>1] = *(u16 *)(base + asrc);
	source += 2;
        // AutoIncrement
        a2+=inc;
        // good dest?
        if(a2 >= 0x80) break;
      }
      a=(a&0xff00)|a2;
      break;
  }
  // remember addr
  Pico.video.addr=(u16)a;
}
Commit	Line	Data
cb4a513a	1
	2	#include "../PicoInt.h"
	3
d1df8786	4	#define rot_comp Pico_mcd->rot_comp
d1df8786	5
75736070	6	static const int Table_Rot_Time[] =
d1df8786	7	{
	8	0x00054000, 0x00048000, 0x00040000, 0x00036000, //; 008-032 ; briefing - sprite
	9	0x0002E000, 0x00028000, 0x00024000, 0x00022000, //; 036-064 ; arbre souvent
	10	0x00021000, 0x00020000, 0x0001E000, 0x0001B800, //; 068-096 ; map thunderstrike
	11	0x00019800, 0x00017A00, 0x00015C00, 0x00013E00, //; 100-128 ; logo défoncé
	12
	13	0x00012000, 0x00011800, 0x00011000, 0x00010800, //; 132-160 ; briefing - map
	14	0x00010000, 0x0000F800, 0x0000F000, 0x0000E800, //; 164-192
	15	0x0000E000, 0x0000D800, 0x0000D000, 0x0000C800, //; 196-224
	16	0x0000C000, 0x0000B800, 0x0000B000, 0x0000A800, //; 228-256 ; batman visage
	17
	18	0x0000A000, 0x00009F00, 0x00009E00, 0x00009D00, //; 260-288
	19	0x00009C00, 0x00009B00, 0x00009A00, 0x00009900, //; 292-320
	20	0x00009800, 0x00009700, 0x00009600, 0x00009500, //; 324-352
	21	0x00009400, 0x00009300, 0x00009200, 0x00009100, //; 356-384
	22
	23	0x00009000, 0x00008F00, 0x00008E00, 0x00008D00, //; 388-416
	24	0x00008C00, 0x00008B00, 0x00008A00, 0x00008900, //; 420-448
	25	0x00008800, 0x00008700, 0x00008600, 0x00008500, //; 452-476
	26	0x00008400, 0x00008300, 0x00008200, 0x00008100, //; 480-512
	27	};
	28
	29
cb4a513a	30	static void gfx_cd_start(void)
cb4a513a	31	{
d1df8786	32	int upd_len;
	33
	34	dprintf("gfx_cd_start()");
	35
528ec956	36	// rot_comp.XD_Mul = ((rot_comp.Reg_5C & 0x1f) + 1) * 4; // unused
a4030801	37	rot_comp.Function = (rot_comp.Reg_58 & 7) \| (Pico_mcd->s68k_regs[3] & 0x18); // Jmp_Adr
528ec956	38	// rot_comp.Buffer_Adr = (rot_comp.Reg_5E & 0xfff8) << 2; // unused?
a4030801	39	rot_comp.YD = (rot_comp.Reg_60 >> 3) & 7;
	40	rot_comp.Vector_Adr = (rot_comp.Reg_66 & 0xfffe) << 2;
	41
d1df8786	42	upd_len = (rot_comp.Reg_62 >> 3) & 0x3f;
d1df8786	43	upd_len = Table_Rot_Time[upd_len];
d1df8786	44	rot_comp.Draw_Speed = rot_comp.Float_Part = upd_len;
	45
	46	rot_comp.Reg_58 \|= 0x8000; // Stamp_Size, we start a new GFX operation
	47
a4030801	48	switch (rot_comp.Reg_58 & 6) // Scr_16?
	49	{
	50	case 0: // ?
	51	rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xff80) << 2;
	52	break;
	53	case 2: // .Dot_32
	54	rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xffe0) << 2;
	55	break;
	56	case 4: // .Scr_16
	57	rot_comp.Stamp_Map_Adr = 0x20000;
	58	break;
	59	case 6: // .Scr_16_Dot_32
	60	rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xe000) << 2;
	61	break;
	62	}
	63
d1df8786	64	gfx_cd_update();
	65	}
	66
	67
	68	static void gfx_completed(void)
	69	{
	70	rot_comp.Reg_58 &= 0x7fff; // Stamp_Size
	71	rot_comp.Reg_64 = 0;
cb4a513a	72	if (Pico_mcd->s68k_regs[0x33] & (1<<1))
	73	{
	74	dprintf("gfx_cd irq 1");
	75	SekInterruptS68k(1);
	76	}
	77	}
	78
d1df8786	79
00bd648e	80	static void gfx_do(unsigned int func, unsigned short *stamp_base, unsigned int H_Dot)
a4030801	81	{
528ec956	82	unsigned int eax, ebx, ecx, edx, esi, edi, pixel;
00bd648e	83	unsigned int XD, Buffer_Adr;
528ec956	84	int DYXS;
a4030801	85
528ec956	86	XD = rot_comp.Reg_60 & 7;
528ec956	87	Buffer_Adr = ((rot_comp.Reg_5E & 0xfff8) + rot_comp.YD) << 2;
a4030801	88	ecx = (unsigned int )(Pico_mcd->word_ram2M + rot_comp.Vector_Adr);
	89	edx = ecx >> 16;
	90	ecx = (ecx & 0xffff) << 8;
	91	edx <<= 8;
528ec956	92	DYXS = (int )(Pico_mcd->word_ram2M + rot_comp.Vector_Adr + 4);
a4030801	93	rot_comp.Vector_Adr += 8;
a4030801	94
a4030801	95	// MAKE_IMAGE_LINE
528ec956	96	while (H_Dot)
a4030801	97	{
	98	if (func & 2) // mode 32x32 dot
	99	{
	100	if (func & 4) // 16x16 screen
	101	{
00bd648e	102	ebx = ((ecx >> (11+5)) & 0x007f) \|
00bd648e	103	((edx >> (11-2)) & 0x3f80);
a4030801	104	}
	105	else // 1x1 screen
	106	{
00bd648e	107	ebx = ((ecx >> (11+5)) & 0x07) \|
00bd648e	108	((edx >> (11+2)) & 0x38);
a4030801	109	}
	110	}
	111	else // mode 16x16 dot
	112	{
	113	if (func & 4) // 16x16 screen
	114	{
00bd648e	115	ebx = ((ecx >> (11+4)) & 0x00ff) \|
00bd648e	116	((edx >> (11-4)) & 0xff00);
a4030801	117	}
	118	else // 1x1 screen
	119	{
00bd648e	120	ebx = ((ecx >> (11+4)) & 0x0f) \|
00bd648e	121	((edx >> (11+0)) & 0xf0);
a4030801	122	}
a4030801	123	}
a4030801	124
a4030801	125	// MAKE_IMAGE_PIXEL
	126	if (!(func & 1)) // NOT TILED
	127	{
528ec956	128	int mask = (func & 4) ? 0x00800000 : 0x00f80000;
528ec956	129	if ((ecx \| edx) & mask)
a4030801	130	{
528ec956	131	if (func & 0x18) goto Next_Pixel;
	132	pixel = 0;
	133	goto Pixel_Out;
a4030801	134	}
a4030801	135	}
528ec956	136
00bd648e	137	edi = stamp_base[ebx];// \| (stamp_base[ebx+1] << 16);
00bd648e	138	esi = (edi & 0x7ff) << 7;
528ec956	139	if (!esi) { pixel = 0; goto Pixel_Out; }
00bd648e	140	edi >>= (11+1);
a4030801	141	edi &= (0x1c>>1);
	142	eax = ecx;
	143	ebx = edx;
	144	if (func & 2) edi \|= 1; // 32 dots?
	145	switch (edi)
	146	{
	147	case 0x00: // No_Flip_0, 16x16 dots
	148	ebx = (ebx >> 9) & 0x3c;
	149	ebx += esi;
	150	edi = (eax & 0x3800) ^ 0x1000; // bswap
	151	eax = ((eax >> 8) & 0x40) + ebx;
a4030801	152	break;
	153	case 0x01: // No_Flip_0, 32x32 dots
	154	ebx = (ebx >> 9) & 0x7c;
	155	ebx += esi;
	156	edi = (eax & 0x3800) ^ 0x1000; // bswap
	157	eax = ((eax >> 7) & 0x180) + ebx;
a4030801	158	break;
	159	case 0x02: // No_Flip_90, 16x16 dots
	160	eax = (eax >> 9) & 0x3c;
	161	eax += esi;
	162	edi = (ebx & 0x3800) ^ 0x2800; // bswap
	163	eax += ((ebx >> 8) & 0x40) ^ 0x40;
a4030801	164	break;
	165	case 0x03: // No_Flip_90, 32x32 dots
	166	eax = (eax >> 9) & 0x7c;
	167	eax += esi;
	168	edi = (ebx & 0x3800) ^ 0x2800; // bswap
01bc6b19	169	eax += ((ebx >> 7) & 0x180) ^ 0x180;
a4030801	170	break;
	171	case 0x04: // No_Flip_180, 16x16 dots
	172	ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
	173	ebx += esi;
	174	edi = (eax & 0x3800) ^ 0x2800; // bswap and flip
	175	eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
a4030801	176	break;
	177	case 0x05: // No_Flip_180, 32x32 dots
	178	ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
	179	ebx += esi;
	180	edi = (eax & 0x3800) ^ 0x2800; // bswap and flip
	181	eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
a4030801	182	break;
	183	case 0x06: // No_Flip_270, 16x16 dots
	184	eax = ((eax >> 9) & 0x3c) ^ 0x3c;
	185	eax += esi;
	186	edi = (ebx & 0x3800) ^ 0x1000; // bswap
	187	eax += (ebx >> 8) & 0x40;
a4030801	188	break;
	189	case 0x07: // No_Flip_270, 32x32 dots
	190	eax = ((eax >> 9) & 0x7c) ^ 0x7c;
	191	eax += esi;
	192	edi = (ebx & 0x3800) ^ 0x1000; // bswap
	193	eax += (ebx >> 7) & 0x180;
a4030801	194	break;
a4030801	195	case 0x08: // Flip_0, 16x16 dots
01bc6b19	196	ebx = (ebx >> 9) & 0x3c;
a4030801	197	ebx += esi;
	198	edi = (eax & 0x3800) ^ 0x2800; // bswap, flip
	199	eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
a4030801	200	break;
a4030801	201	case 0x09: // Flip_0, 32x32 dots
01bc6b19	202	ebx = (ebx >> 9) & 0x7c;
a4030801	203	ebx += esi;
	204	edi = (eax & 0x3800) ^ 0x2800; // bswap, flip
	205	eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
a4030801	206	break;
	207	case 0x0a: // Flip_90, 16x16 dots
	208	eax = ((eax >> 9) & 0x3c) ^ 0x3c;
	209	eax += esi;
	210	edi = (ebx & 0x3800) ^ 0x2800; // bswap, flip
	211	eax += ((ebx >> 8) & 0x40) ^ 0x40;
a4030801	212	break;
	213	case 0x0b: // Flip_90, 32x32 dots
	214	eax = ((eax >> 9) & 0x7c) ^ 0x7c;
	215	eax += esi;
	216	edi = (ebx & 0x3800) ^ 0x2800; // bswap, flip
	217	eax += ((ebx >> 7) & 0x180) ^ 0x180;
a4030801	218	break;
	219	case 0x0c: // Flip_180, 16x16 dots
	220	ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
	221	ebx += esi;
	222	edi = (eax & 0x3800) ^ 0x1000; // bswap
	223	eax = ((eax >> 8) & 0x40) + ebx;
a4030801	224	break;
	225	case 0x0d: // Flip_180, 32x32 dots
	226	ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
	227	ebx += esi;
	228	edi = (eax & 0x3800) ^ 0x1000; // bswap
	229	eax = ((eax >> 7) & 0x180) + ebx;
a4030801	230	break;
	231	case 0x0e: // Flip_270, 16x16 dots
	232	eax = (eax >> 9) & 0x3c;
	233	eax += esi;
	234	edi = (ebx & 0x3800) ^ 0x1000; // bswap, flip
	235	eax += (ebx >> 8) & 0x40;
a4030801	236	break;
	237	case 0x0f: // Flip_270, 32x32 dots
	238	eax = (eax >> 9) & 0x7c;
	239	eax += esi;
	240	edi = (ebx & 0x3800) ^ 0x1000; // bswap, flip
	241	eax += (ebx >> 7) & 0x180;
a4030801	242	break;
	243	}
	244
01bc6b19	245	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
01bc6b19	246	if (!(edi & 0x800)) pixel >>= 4;
528ec956	247	else pixel &= 0x0f;
01bc6b19	248
a4030801	249	Pixel_Out:
a4030801	250	if (!pixel && (func & 0x18)) goto Next_Pixel;
528ec956	251	esi = Buffer_Adr + ((XD>>1)^1); // pixel addr
a4030801	252	eax = *(Pico_mcd->word_ram2M + esi); // old pixel
528ec956	253	if (XD & 1)
a4030801	254	{
	255	if ((eax & 0x0f) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite
	256	*(Pico_mcd->word_ram2M + esi) = pixel \| (eax & 0xf0);
	257	}
	258	else
	259	{
	260	if ((eax & 0xf0) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite
	261	*(Pico_mcd->word_ram2M + esi) = (pixel << 4) \| (eax & 0xf);
	262	}
	263
	264
	265	Next_Pixel:
528ec956	266	ecx += (DYXS << 16) >> 16; // rot_comp.DXS;
	267	edx += DYXS >> 16; // rot_comp.DYS;
	268	XD++;
	269	if (XD >= 8)
a4030801	270	{
528ec956	271	Buffer_Adr += ((rot_comp.Reg_5C & 0x1f) + 1) << 5;
528ec956	272	XD = 0;
a4030801	273	}
528ec956	274	H_Dot--;
a4030801	275	}
528ec956	276	// end while
a4030801	277
a4030801	278
00bd648e	279	// nothing_to_draw:
a4030801	280	rot_comp.YD++;
	281	// rot_comp.V_Dot--; // will be done by caller
	282	}
d1df8786	283
d1df8786	284
cb4a513a	285	void gfx_cd_update(void)
cb4a513a	286	{
00bd648e	287	int V_Dot = rot_comp.Reg_64 & 0xff;
d1df8786	288	int jobs;
	289
	290	dprintf("gfx_cd_update, Reg_64 = %04x", rot_comp.Reg_64);
	291
00bd648e	292	if (!V_Dot)
d1df8786	293	{
d1df8786	294	gfx_completed();
	295	return;
	296	}
	297
	298	jobs = rot_comp.Float_Part >> 16;
	299
	300	if (!jobs)
	301	{
	302	rot_comp.Float_Part += rot_comp.Draw_Speed;
	303	return;
	304	}
	305
	306	rot_comp.Float_Part &= 0xffff;
	307	rot_comp.Float_Part += rot_comp.Draw_Speed;
	308
00bd648e	309	if (PicoOpt & 0x1000) // scale/rot enabled
d1df8786	310	{
00bd648e	311	unsigned int func = rot_comp.Function;
	312	unsigned int H_Dot = rot_comp.Reg_62 & 0x1ff;
	313	unsigned short stamp_base = (unsigned short ) (Pico_mcd->word_ram2M + rot_comp.Stamp_Map_Adr);
a4030801	314
00bd648e	315	while (jobs--)
	316	{
	317	gfx_do(func, stamp_base, H_Dot); // jmp [Jmp_Adr]:
d1df8786	318
00bd648e	319	V_Dot--; // dec byte [V_Dot]
	320	if (V_Dot == 0)
	321	{
	322	// GFX_Completed:
	323	gfx_completed();
	324	return;
	325	}
	326	}
	327	}
	328	else
	329	{
	330	if (jobs >= V_Dot)
d1df8786	331	{
d1df8786	332	gfx_completed();
	333	return;
	334	}
00bd648e	335	V_Dot -= jobs;
d1df8786	336	}
00bd648e	337
00bd648e	338	rot_comp.Reg_64 = V_Dot;
cb4a513a	339	}
	340
	341
	342	unsigned int gfx_cd_read(unsigned int a)
	343	{
d1df8786	344	unsigned int d = 0;
	345
	346	switch (a) {
	347	case 0x58: d = rot_comp.Reg_58; break;
	348	case 0x5A: d = rot_comp.Reg_5A; break;
	349	case 0x5C: d = rot_comp.Reg_5C; break;
	350	case 0x5E: d = rot_comp.Reg_5E; break;
	351	case 0x60: d = rot_comp.Reg_60; break;
	352	case 0x62: d = rot_comp.Reg_62; break;
	353	case 0x64: d = rot_comp.Reg_64; break;
	354	case 0x66: break;
fa1e5e29	355	default: dprintf("gfx_cd_read FIXME: unexpected address: %02x", a); break;
d1df8786	356	}
	357
	358	dprintf("gfx_cd_read(%02x) = %04x", a, d);
cb4a513a	359
89fa852d	360	return d;
cb4a513a	361	}
cb4a513a	362
5c69a605	363	void gfx_cd_write16(unsigned int a, unsigned int d)
cb4a513a	364	{
5c69a605	365	dprintf("gfx_cd_write16(%x, %04x)", a, d);
cb4a513a	366
cb4a513a	367	switch (a) {
d1df8786	368	case 0x58: // .Reg_Stamp_Size
	369	rot_comp.Reg_58 = d & 7;
	370	return;
	371
	372	case 0x5A: // .Reg_Stamp_Adr
	373	rot_comp.Reg_5A = d & 0xffe0;
	374	return;
	375
	376	case 0x5C: // .Reg_IM_VCell_Size
	377	rot_comp.Reg_5C = d & 0x1f;
	378	return;
	379
	380	case 0x5E: // .Reg_IM_Adr
	381	rot_comp.Reg_5E = d & 0xFFF8;
	382	return;
	383
	384	case 0x60: // .Reg_IM_Offset
	385	rot_comp.Reg_60 = d & 0x3f;
	386	return;
	387
	388	case 0x62: // .Reg_IM_HDot_Size
	389	rot_comp.Reg_62 = d & 0x1ff;
	390	return;
	391
	392	case 0x64: // .Reg_IM_VDot_Size
	393	rot_comp.Reg_64 = d & 0xff; // V_Dot, must be 32bit?
	394	return;
	395
	396	case 0x66: // .Reg_Vector_Adr
	397	rot_comp.Reg_66 = d & 0xfffe;
cb4a513a	398	if (Pico_mcd->s68k_regs[3]&4) return; // can't do tanformations in 1M mode
	399	gfx_cd_start();
	400	return;
d1df8786	401
5c69a605	402	default: dprintf("gfx_cd_write16 FIXME: unexpected address: %02x", a); return;
cb4a513a	403	}
	404	}
	405
d1df8786	406
51a902ae	407	void gfx_cd_reset(void)
51a902ae	408	{
fa1e5e29	409	memset(&rot_comp.Reg_58, 0, sizeof(rot_comp));
	410	}
	411
	412
	413	// --------------------------------
	414
	415	#include "cell_map.c"
	416
	417	typedef unsigned short u16;
	418
0a051f55	419	// check: Heart of the alien, jaguar xj 220
fa1e5e29	420	void DmaSlowCell(unsigned int source, unsigned int a, int len, unsigned char inc)
	421	{
	422	unsigned char *base;
	423	unsigned int asrc, a2;
	424	u16 *r;
	425
	426	base = Pico_mcd->word_ram1M[Pico_mcd->s68k_regs[3]&1];
	427
	428	switch (Pico.video.type)
	429	{
	430	case 1: // vram
	431	r = Pico.vram;
	432	for(; len; len--)
	433	{
	434	asrc = cell_map(source >> 2) << 2;
	435	asrc \|= source & 2;
	436	// if(a&1) d=(d<<8)\|(d>>8); // ??
	437	r[a>>1] = (u16 )(base + asrc);
	438	source += 2;
	439	// AutoIncrement
	440	a=(u16)(a+inc);
	441	}
	442	rendstatus\|=0x10;
	443	break;
	444
	445	case 3: // cram
	446	Pico.m.dirtyPal = 1;
	447	r = Pico.cram;
	448	for(a2=a&0x7f; len; len--)
	449	{
	450	asrc = cell_map(source >> 2) << 2;
	451	asrc \|= source & 2;
	452	r[a2>>1] = (u16 )(base + asrc);
	453	source += 2;
	454	// AutoIncrement
	455	a2+=inc;
	456	// good dest?
	457	if(a2 >= 0x80) break;
	458	}
	459	a=(a&0xff00)\|a2;
	460	break;
	461
	462	case 5: // vsram[a&0x003f]=d;
	463	r = Pico.vsram;
	464	for(a2=a&0x7f; len; len--)
	465	{
	466	asrc = cell_map(source >> 2) << 2;
	467	asrc \|= source & 2;
	468	r[a2>>1] = (u16 )(base + asrc);
	469	source += 2;
	470	// AutoIncrement
	471	a2+=inc;
	472	// good dest?
	473	if(a2 >= 0x80) break;
	474	}
	475	a=(a&0xff00)\|a2;
	476	break;
	477	}
	478	// remember addr
	479	Pico.video.addr=(u16)a;
51a902ae	480	}
51a902ae	481