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

// TODO...

// #include <string.h>
#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;
	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;
	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(void)
{
	unsigned int eax, ebx, ecx, edx, esi, edi, pixel = 0;
	unsigned int func = rot_comp.Function;
	unsigned short *ptrs;

	rot_comp.XD = rot_comp.Reg_60 & 7;
	rot_comp.Buffer_Adr = ((rot_comp.Reg_5E & 0xfff8) + rot_comp.YD) << 2;
	rot_comp.H_Dot = rot_comp.Reg_62 & 0x1ff;
	ecx = *(unsigned int *)(Pico_mcd->word_ram2M + rot_comp.Vector_Adr);
	edx = ecx >> 16;
	ecx = (ecx & 0xffff) << 8;
	edx <<= 8;
	rot_comp.DXS = *(int *)(Pico_mcd->word_ram2M + rot_comp.Vector_Adr + 4);
	rot_comp.DYS =  rot_comp.DXS >> 16;
	rot_comp.DXS = (rot_comp.DXS << 16) >> 16; // sign extend
	rot_comp.Vector_Adr += 8;

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

		// esi = rot_comp.Stamp_Map_Adr;
		ptrs = (unsigned short *) (Pico_mcd->word_ram2M + rot_comp.Stamp_Map_Adr + ebx*2);
		edi = ptrs[0] | (ptrs[1] << 16);

		// MAKE_IMAGE_PIXEL
		if (!(func & 1))	// NOT TILED
		{
			if (func & 4)	// 16x16 screen
			{
				if ((edx & 0x00800000) || (ecx & 0x00800000)) goto Pixel_Out;
			}
			else		// 1x1 screen
			{
				if ((edx & 0x00f80000) || (ecx & 0x00f80000)) goto Pixel_Out;
			}
		}
		esi = edi;
		edi >>= (11+1);
		esi = (esi & 0x7ff) << 7;
		if (!esi) goto Pixel_Out;
		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;

Pixel_Out:
//		pixel = 0;
//Finish:
		pixel &= 0x0f;
		if (!pixel && (func & 0x18)) goto Next_Pixel;
		esi = rot_comp.Buffer_Adr + ((rot_comp.XD>>1)^1);	// pixel addr
		eax = *(Pico_mcd->word_ram2M + esi);			// old pixel
		if (rot_comp.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 += rot_comp.DXS;
		edx += rot_comp.DYS;
		rot_comp.XD++;
		if (rot_comp.XD >= 8)
		{
			rot_comp.Buffer_Adr += ((rot_comp.Reg_5C & 0x1f) + 1) << 5;
			rot_comp.XD = 0;
		}
		rot_comp.H_Dot--;
	}


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


void gfx_cd_update(void)
{
	unsigned char *V_Dot = (unsigned char *) &rot_comp.Reg_64;
	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;

	while (jobs--)
	{
		if (PicoOpt & 0x1000)
			gfx_do();	// jmp [Jmp_Adr]:

		(*V_Dot)--;		// dec byte [V_Dot]

		if (!*V_Dot)
		{
			// GFX_Completed:
			gfx_completed();
			return;
		}
	}
}


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 0;
}

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	// TODO...
cb4a513a	2
51a902ae	3	// #include <string.h>
cb4a513a	4	#include "../PicoInt.h"
cb4a513a	5
d1df8786	6	#define rot_comp Pico_mcd->rot_comp
d1df8786	7
75736070	8	static const int Table_Rot_Time[] =
d1df8786	9	{
	10	0x00054000, 0x00048000, 0x00040000, 0x00036000, //; 008-032 ; briefing - sprite
	11	0x0002E000, 0x00028000, 0x00024000, 0x00022000, //; 036-064 ; arbre souvent
	12	0x00021000, 0x00020000, 0x0001E000, 0x0001B800, //; 068-096 ; map thunderstrike
	13	0x00019800, 0x00017A00, 0x00015C00, 0x00013E00, //; 100-128 ; logo défoncé
	14
	15	0x00012000, 0x00011800, 0x00011000, 0x00010800, //; 132-160 ; briefing - map
	16	0x00010000, 0x0000F800, 0x0000F000, 0x0000E800, //; 164-192
	17	0x0000E000, 0x0000D800, 0x0000D000, 0x0000C800, //; 196-224
	18	0x0000C000, 0x0000B800, 0x0000B000, 0x0000A800, //; 228-256 ; batman visage
	19
	20	0x0000A000, 0x00009F00, 0x00009E00, 0x00009D00, //; 260-288
	21	0x00009C00, 0x00009B00, 0x00009A00, 0x00009900, //; 292-320
	22	0x00009800, 0x00009700, 0x00009600, 0x00009500, //; 324-352
	23	0x00009400, 0x00009300, 0x00009200, 0x00009100, //; 356-384
	24
	25	0x00009000, 0x00008F00, 0x00008E00, 0x00008D00, //; 388-416
	26	0x00008C00, 0x00008B00, 0x00008A00, 0x00008900, //; 420-448
	27	0x00008800, 0x00008700, 0x00008600, 0x00008500, //; 452-476
	28	0x00008400, 0x00008300, 0x00008200, 0x00008100, //; 480-512
	29	};
	30
	31
cb4a513a	32	static void gfx_cd_start(void)
cb4a513a	33	{
d1df8786	34	int upd_len;
	35
	36	dprintf("gfx_cd_start()");
	37
a4030801	38	rot_comp.XD_Mul = ((rot_comp.Reg_5C & 0x1f) + 1) * 4;
	39	rot_comp.Function = (rot_comp.Reg_58 & 7) \| (Pico_mcd->s68k_regs[3] & 0x18); // Jmp_Adr
	40	rot_comp.Buffer_Adr = (rot_comp.Reg_5E & 0xfff8) << 2;
	41	rot_comp.YD = (rot_comp.Reg_60 >> 3) & 7;
	42	rot_comp.Vector_Adr = (rot_comp.Reg_66 & 0xfffe) << 2;
	43
d1df8786	44	upd_len = (rot_comp.Reg_62 >> 3) & 0x3f;
d1df8786	45	upd_len = Table_Rot_Time[upd_len];
d1df8786	46	rot_comp.Draw_Speed = rot_comp.Float_Part = upd_len;
	47
	48	rot_comp.Reg_58 \|= 0x8000; // Stamp_Size, we start a new GFX operation
	49
a4030801	50	switch (rot_comp.Reg_58 & 6) // Scr_16?
	51	{
	52	case 0: // ?
	53	rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xff80) << 2;
	54	break;
	55	case 2: // .Dot_32
	56	rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xffe0) << 2;
	57	break;
	58	case 4: // .Scr_16
	59	rot_comp.Stamp_Map_Adr = 0x20000;
	60	break;
	61	case 6: // .Scr_16_Dot_32
	62	rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xe000) << 2;
	63	break;
	64	}
	65
d1df8786	66	gfx_cd_update();
	67	}
	68
	69
	70	static void gfx_completed(void)
	71	{
	72	rot_comp.Reg_58 &= 0x7fff; // Stamp_Size
	73	rot_comp.Reg_64 = 0;
cb4a513a	74	if (Pico_mcd->s68k_regs[0x33] & (1<<1))
	75	{
	76	dprintf("gfx_cd irq 1");
	77	SekInterruptS68k(1);
	78	}
	79	}
	80
d1df8786	81
a4030801	82	static void gfx_do(void)
	83	{
	84	unsigned int eax, ebx, ecx, edx, esi, edi, pixel = 0;
	85	unsigned int func = rot_comp.Function;
	86	unsigned short *ptrs;
	87
	88	rot_comp.XD = rot_comp.Reg_60 & 7;
	89	rot_comp.Buffer_Adr = ((rot_comp.Reg_5E & 0xfff8) + rot_comp.YD) << 2;
	90	rot_comp.H_Dot = rot_comp.Reg_62 & 0x1ff;
	91	ecx = (unsigned int )(Pico_mcd->word_ram2M + rot_comp.Vector_Adr);
	92	edx = ecx >> 16;
	93	ecx = (ecx & 0xffff) << 8;
	94	edx <<= 8;
	95	rot_comp.DXS = (int )(Pico_mcd->word_ram2M + rot_comp.Vector_Adr + 4);
	96	rot_comp.DYS = rot_comp.DXS >> 16;
	97	rot_comp.DXS = (rot_comp.DXS << 16) >> 16; // sign extend
	98	rot_comp.Vector_Adr += 8;
a4030801	99
	100	// MAKE_IMAGE_LINE
	101	while (rot_comp.H_Dot)
	102	{
	103	if (func & 2) // mode 32x32 dot
	104	{
	105	if (func & 4) // 16x16 screen
	106	{
01bc6b19	107	eax = (ecx >> (11+5)) & 0x007f;
a4030801	108	ebx = (edx >> (11-2)) & 0x3f80;
	109	}
	110	else // 1x1 screen
	111	{
01bc6b19	112	eax = (ecx >> (11+5)) & 0x07;
a4030801	113	ebx = (edx >> (11+2)) & 0x38;
	114	}
	115	}
	116	else // mode 16x16 dot
	117	{
	118	if (func & 4) // 16x16 screen
	119	{
01bc6b19	120	eax = (ecx >> (11+4)) & 0x00ff;
a4030801	121	ebx = (edx >> (11-4)) & 0xff00;
	122	}
	123	else // 1x1 screen
	124	{
	125	eax = (ecx >> (11+4)) & 0x0f;
	126	ebx = (edx >> (11+0)) & 0xf0;
	127	}
	128	}
	129	ebx += eax;
	130
01bc6b19	131	// esi = rot_comp.Stamp_Map_Adr;
a4030801	132	ptrs = (unsigned short ) (Pico_mcd->word_ram2M + rot_comp.Stamp_Map_Adr + ebx2);
	133	edi = ptrs[0] \| (ptrs[1] << 16);
	134
	135	// MAKE_IMAGE_PIXEL
	136	if (!(func & 1)) // NOT TILED
	137	{
	138	if (func & 4) // 16x16 screen
	139	{
	140	if ((edx & 0x00800000) \|\| (ecx & 0x00800000)) goto Pixel_Out;
	141	}
	142	else // 1x1 screen
	143	{
	144	if ((edx & 0x00f80000) \|\| (ecx & 0x00f80000)) goto Pixel_Out;
	145	}
	146	}
	147	esi = edi;
	148	edi >>= (11+1);
	149	esi = (esi & 0x7ff) << 7;
	150	if (!esi) goto Pixel_Out;
	151	edi &= (0x1c>>1);
	152	eax = ecx;
	153	ebx = edx;
	154	if (func & 2) edi \|= 1; // 32 dots?
	155	switch (edi)
	156	{
	157	case 0x00: // No_Flip_0, 16x16 dots
	158	ebx = (ebx >> 9) & 0x3c;
	159	ebx += esi;
	160	edi = (eax & 0x3800) ^ 0x1000; // bswap
	161	eax = ((eax >> 8) & 0x40) + ebx;
a4030801	162	break;
	163	case 0x01: // No_Flip_0, 32x32 dots
	164	ebx = (ebx >> 9) & 0x7c;
	165	ebx += esi;
	166	edi = (eax & 0x3800) ^ 0x1000; // bswap
	167	eax = ((eax >> 7) & 0x180) + ebx;
a4030801	168	break;
	169	case 0x02: // No_Flip_90, 16x16 dots
	170	eax = (eax >> 9) & 0x3c;
	171	eax += esi;
	172	edi = (ebx & 0x3800) ^ 0x2800; // bswap
	173	eax += ((ebx >> 8) & 0x40) ^ 0x40;
a4030801	174	break;
	175	case 0x03: // No_Flip_90, 32x32 dots
	176	eax = (eax >> 9) & 0x7c;
	177	eax += esi;
	178	edi = (ebx & 0x3800) ^ 0x2800; // bswap
01bc6b19	179	eax += ((ebx >> 7) & 0x180) ^ 0x180;
a4030801	180	break;
	181	case 0x04: // No_Flip_180, 16x16 dots
	182	ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
	183	ebx += esi;
	184	edi = (eax & 0x3800) ^ 0x2800; // bswap and flip
	185	eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
a4030801	186	break;
	187	case 0x05: // No_Flip_180, 32x32 dots
	188	ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
	189	ebx += esi;
	190	edi = (eax & 0x3800) ^ 0x2800; // bswap and flip
	191	eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
a4030801	192	break;
	193	case 0x06: // No_Flip_270, 16x16 dots
	194	eax = ((eax >> 9) & 0x3c) ^ 0x3c;
	195	eax += esi;
	196	edi = (ebx & 0x3800) ^ 0x1000; // bswap
	197	eax += (ebx >> 8) & 0x40;
a4030801	198	break;
	199	case 0x07: // No_Flip_270, 32x32 dots
	200	eax = ((eax >> 9) & 0x7c) ^ 0x7c;
	201	eax += esi;
	202	edi = (ebx & 0x3800) ^ 0x1000; // bswap
	203	eax += (ebx >> 7) & 0x180;
a4030801	204	break;
a4030801	205	case 0x08: // Flip_0, 16x16 dots
01bc6b19	206	ebx = (ebx >> 9) & 0x3c;
a4030801	207	ebx += esi;
	208	edi = (eax & 0x3800) ^ 0x2800; // bswap, flip
	209	eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
a4030801	210	break;
a4030801	211	case 0x09: // Flip_0, 32x32 dots
01bc6b19	212	ebx = (ebx >> 9) & 0x7c;
a4030801	213	ebx += esi;
	214	edi = (eax & 0x3800) ^ 0x2800; // bswap, flip
	215	eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
a4030801	216	break;
	217	case 0x0a: // Flip_90, 16x16 dots
	218	eax = ((eax >> 9) & 0x3c) ^ 0x3c;
	219	eax += esi;
	220	edi = (ebx & 0x3800) ^ 0x2800; // bswap, flip
	221	eax += ((ebx >> 8) & 0x40) ^ 0x40;
a4030801	222	break;
	223	case 0x0b: // Flip_90, 32x32 dots
	224	eax = ((eax >> 9) & 0x7c) ^ 0x7c;
	225	eax += esi;
	226	edi = (ebx & 0x3800) ^ 0x2800; // bswap, flip
	227	eax += ((ebx >> 7) & 0x180) ^ 0x180;
a4030801	228	break;
	229	case 0x0c: // Flip_180, 16x16 dots
	230	ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
	231	ebx += esi;
	232	edi = (eax & 0x3800) ^ 0x1000; // bswap
	233	eax = ((eax >> 8) & 0x40) + ebx;
a4030801	234	break;
	235	case 0x0d: // Flip_180, 32x32 dots
	236	ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
	237	ebx += esi;
	238	edi = (eax & 0x3800) ^ 0x1000; // bswap
	239	eax = ((eax >> 7) & 0x180) + ebx;
a4030801	240	break;
	241	case 0x0e: // Flip_270, 16x16 dots
	242	eax = (eax >> 9) & 0x3c;
	243	eax += esi;
	244	edi = (ebx & 0x3800) ^ 0x1000; // bswap, flip
	245	eax += (ebx >> 8) & 0x40;
a4030801	246	break;
	247	case 0x0f: // Flip_270, 32x32 dots
	248	eax = (eax >> 9) & 0x7c;
	249	eax += esi;
	250	edi = (ebx & 0x3800) ^ 0x1000; // bswap, flip
	251	eax += (ebx >> 7) & 0x180;
a4030801	252	break;
	253	}
	254
01bc6b19	255	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
	256	if (!(edi & 0x800)) pixel >>= 4;
	257
a4030801	258	Pixel_Out:
	259	// pixel = 0;
	260	//Finish:
	261	pixel &= 0x0f;
	262	if (!pixel && (func & 0x18)) goto Next_Pixel;
	263	esi = rot_comp.Buffer_Adr + ((rot_comp.XD>>1)^1); // pixel addr
	264	eax = *(Pico_mcd->word_ram2M + esi); // old pixel
	265	if (rot_comp.XD & 1)
	266	{
	267	if ((eax & 0x0f) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite
	268	*(Pico_mcd->word_ram2M + esi) = pixel \| (eax & 0xf0);
	269	}
	270	else
	271	{
	272	if ((eax & 0xf0) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite
	273	*(Pico_mcd->word_ram2M + esi) = (pixel << 4) \| (eax & 0xf);
	274	}
	275
	276
	277	Next_Pixel:
	278	ecx += rot_comp.DXS;
	279	edx += rot_comp.DYS;
	280	rot_comp.XD++;
	281	if (rot_comp.XD >= 8)
	282	{
	283	rot_comp.Buffer_Adr += ((rot_comp.Reg_5C & 0x1f) + 1) << 5;
	284	rot_comp.XD = 0;
	285	}
	286	rot_comp.H_Dot--;
	287	}
	288
	289
	290	//nothing_to_draw:
	291	rot_comp.YD++;
	292	// rot_comp.V_Dot--; // will be done by caller
	293	}
d1df8786	294
d1df8786	295
cb4a513a	296	void gfx_cd_update(void)
cb4a513a	297	{
d1df8786	298	unsigned char V_Dot = (unsigned char ) &rot_comp.Reg_64;
	299	int jobs;
	300
	301	dprintf("gfx_cd_update, Reg_64 = %04x", rot_comp.Reg_64);
	302
	303	if (!*V_Dot)
	304	{
d1df8786	305	gfx_completed();
	306	return;
	307	}
	308
	309	jobs = rot_comp.Float_Part >> 16;
	310
	311	if (!jobs)
	312	{
	313	rot_comp.Float_Part += rot_comp.Draw_Speed;
	314	return;
	315	}
	316
	317	rot_comp.Float_Part &= 0xffff;
	318	rot_comp.Float_Part += rot_comp.Draw_Speed;
	319
	320	while (jobs--)
	321	{
a4030801	322	if (PicoOpt & 0x1000)
	323	gfx_do(); // jmp [Jmp_Adr]:
	324
	325	(*V_Dot)--; // dec byte [V_Dot]
d1df8786	326
	327	if (!*V_Dot)
	328	{
	329	// GFX_Completed:
	330	gfx_completed();
	331	return;
	332	}
	333	}
cb4a513a	334	}
	335
	336
	337	unsigned int gfx_cd_read(unsigned int a)
	338	{
d1df8786	339	unsigned int d = 0;
	340
	341	switch (a) {
	342	case 0x58: d = rot_comp.Reg_58; break;
	343	case 0x5A: d = rot_comp.Reg_5A; break;
	344	case 0x5C: d = rot_comp.Reg_5C; break;
	345	case 0x5E: d = rot_comp.Reg_5E; break;
	346	case 0x60: d = rot_comp.Reg_60; break;
	347	case 0x62: d = rot_comp.Reg_62; break;
	348	case 0x64: d = rot_comp.Reg_64; break;
	349	case 0x66: break;
fa1e5e29	350	default: dprintf("gfx_cd_read FIXME: unexpected address: %02x", a); break;
d1df8786	351	}
	352
	353	dprintf("gfx_cd_read(%02x) = %04x", a, d);
cb4a513a	354
cb4a513a	355	return 0;
	356	}
	357
5c69a605	358	void gfx_cd_write16(unsigned int a, unsigned int d)
cb4a513a	359	{
5c69a605	360	dprintf("gfx_cd_write16(%x, %04x)", a, d);
cb4a513a	361
cb4a513a	362	switch (a) {
d1df8786	363	case 0x58: // .Reg_Stamp_Size
	364	rot_comp.Reg_58 = d & 7;
	365	return;
	366
	367	case 0x5A: // .Reg_Stamp_Adr
	368	rot_comp.Reg_5A = d & 0xffe0;
	369	return;
	370
	371	case 0x5C: // .Reg_IM_VCell_Size
	372	rot_comp.Reg_5C = d & 0x1f;
	373	return;
	374
	375	case 0x5E: // .Reg_IM_Adr
	376	rot_comp.Reg_5E = d & 0xFFF8;
	377	return;
	378
	379	case 0x60: // .Reg_IM_Offset
	380	rot_comp.Reg_60 = d & 0x3f;
	381	return;
	382
	383	case 0x62: // .Reg_IM_HDot_Size
	384	rot_comp.Reg_62 = d & 0x1ff;
	385	return;
	386
	387	case 0x64: // .Reg_IM_VDot_Size
	388	rot_comp.Reg_64 = d & 0xff; // V_Dot, must be 32bit?
	389	return;
	390
	391	case 0x66: // .Reg_Vector_Adr
	392	rot_comp.Reg_66 = d & 0xfffe;
cb4a513a	393	if (Pico_mcd->s68k_regs[3]&4) return; // can't do tanformations in 1M mode
	394	gfx_cd_start();
	395	return;
d1df8786	396
5c69a605	397	default: dprintf("gfx_cd_write16 FIXME: unexpected address: %02x", a); return;
cb4a513a	398	}
	399	}
	400
d1df8786	401
51a902ae	402	void gfx_cd_reset(void)
51a902ae	403	{
fa1e5e29	404	memset(&rot_comp.Reg_58, 0, sizeof(rot_comp));
	405	}
	406
	407
	408	// --------------------------------
	409
	410	#include "cell_map.c"
	411
	412	typedef unsigned short u16;
	413
0a051f55	414	// check: Heart of the alien, jaguar xj 220
fa1e5e29	415	void DmaSlowCell(unsigned int source, unsigned int a, int len, unsigned char inc)
	416	{
	417	unsigned char *base;
	418	unsigned int asrc, a2;
	419	u16 *r;
	420
	421	base = Pico_mcd->word_ram1M[Pico_mcd->s68k_regs[3]&1];
	422
	423	switch (Pico.video.type)
	424	{
	425	case 1: // vram
	426	r = Pico.vram;
	427	for(; len; len--)
	428	{
	429	asrc = cell_map(source >> 2) << 2;
	430	asrc \|= source & 2;
	431	// if(a&1) d=(d<<8)\|(d>>8); // ??
	432	r[a>>1] = (u16 )(base + asrc);
	433	source += 2;
	434	// AutoIncrement
	435	a=(u16)(a+inc);
	436	}
	437	rendstatus\|=0x10;
	438	break;
	439
	440	case 3: // cram
	441	Pico.m.dirtyPal = 1;
	442	r = Pico.cram;
	443	for(a2=a&0x7f; len; len--)
	444	{
	445	asrc = cell_map(source >> 2) << 2;
	446	asrc \|= source & 2;
	447	r[a2>>1] = (u16 )(base + asrc);
	448	source += 2;
	449	// AutoIncrement
	450	a2+=inc;
	451	// good dest?
	452	if(a2 >= 0x80) break;
	453	}
	454	a=(a&0xff00)\|a2;
	455	break;
	456
	457	case 5: // vsram[a&0x003f]=d;
	458	r = Pico.vsram;
	459	for(a2=a&0x7f; len; len--)
	460	{
	461	asrc = cell_map(source >> 2) << 2;
	462	asrc \|= source & 2;
	463	r[a2>>1] = (u16 )(base + asrc);
	464	source += 2;
	465	// AutoIncrement
	466	a2+=inc;
	467	// good dest?
	468	if(a2 >= 0x80) break;
	469	}
	470	a=(a&0xff00)\|a2;
	471	break;
	472	}
	473	// remember addr
	474	Pico.video.addr=(u16)a;
51a902ae	475	}
51a902ae	476