[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; // 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(void)
{
	unsigned int eax, ebx, ecx, edx, esi, edi, pixel;
	unsigned int XD, Buffer_Adr, H_Dot;
	unsigned int func = rot_comp.Function;
	unsigned short *stamp_base;
	int DYXS;

	XD = rot_comp.Reg_60 & 7;
	Buffer_Adr = ((rot_comp.Reg_5E & 0xfff8) + rot_comp.YD) << 2;
	stamp_base = (unsigned short *) (Pico_mcd->word_ram2M + rot_comp.Stamp_Map_Adr);
	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;
	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
			{
				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;

		// 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;
			}
		}

		// esi = rot_comp.Stamp_Map_Adr;
		edi = stamp_base[ebx] | (stamp_base[ebx+1] << 16);
		esi = edi;
		edi >>= (11+1);
		esi = (esi & 0x7ff) << 7;
		if (!esi) { pixel = 0; 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;
		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)
{
	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
528ec956	38	// rot_comp.XD_Mul = ((rot_comp.Reg_5C & 0x1f) + 1) * 4; // unused
a4030801	39	rot_comp.Function = (rot_comp.Reg_58 & 7) \| (Pico_mcd->s68k_regs[3] & 0x18); // Jmp_Adr
528ec956	40	// rot_comp.Buffer_Adr = (rot_comp.Reg_5E & 0xfff8) << 2; // unused?
a4030801	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)
a4030801	83	{
528ec956	84	unsigned int eax, ebx, ecx, edx, esi, edi, pixel;
528ec956	85	unsigned int XD, Buffer_Adr, H_Dot;
a4030801	86	unsigned int func = rot_comp.Function;
528ec956	87	unsigned short *stamp_base;
528ec956	88	int DYXS;
a4030801	89
528ec956	90	XD = rot_comp.Reg_60 & 7;
	91	Buffer_Adr = ((rot_comp.Reg_5E & 0xfff8) + rot_comp.YD) << 2;
	92	stamp_base = (unsigned short *) (Pico_mcd->word_ram2M + rot_comp.Stamp_Map_Adr);
	93	H_Dot = rot_comp.Reg_62 & 0x1ff;
a4030801	94	ecx = (unsigned int )(Pico_mcd->word_ram2M + rot_comp.Vector_Adr);
	95	edx = ecx >> 16;
	96	ecx = (ecx & 0xffff) << 8;
	97	edx <<= 8;
528ec956	98	DYXS = (int )(Pico_mcd->word_ram2M + rot_comp.Vector_Adr + 4);
a4030801	99	rot_comp.Vector_Adr += 8;
a4030801	100
a4030801	101	// MAKE_IMAGE_LINE
528ec956	102	while (H_Dot)
a4030801	103	{
	104	if (func & 2) // mode 32x32 dot
	105	{
	106	if (func & 4) // 16x16 screen
	107	{
01bc6b19	108	eax = (ecx >> (11+5)) & 0x007f;
a4030801	109	ebx = (edx >> (11-2)) & 0x3f80;
	110	}
	111	else // 1x1 screen
	112	{
01bc6b19	113	eax = (ecx >> (11+5)) & 0x07;
a4030801	114	ebx = (edx >> (11+2)) & 0x38;
	115	}
	116	}
	117	else // mode 16x16 dot
	118	{
	119	if (func & 4) // 16x16 screen
	120	{
01bc6b19	121	eax = (ecx >> (11+4)) & 0x00ff;
a4030801	122	ebx = (edx >> (11-4)) & 0xff00;
	123	}
	124	else // 1x1 screen
	125	{
	126	eax = (ecx >> (11+4)) & 0x0f;
	127	ebx = (edx >> (11+0)) & 0xf0;
	128	}
	129	}
	130	ebx += eax;
	131
a4030801	132	// MAKE_IMAGE_PIXEL
	133	if (!(func & 1)) // NOT TILED
	134	{
528ec956	135	int mask = (func & 4) ? 0x00800000 : 0x00f80000;
528ec956	136	if ((ecx \| edx) & mask)
a4030801	137	{
528ec956	138	if (func & 0x18) goto Next_Pixel;
	139	pixel = 0;
	140	goto Pixel_Out;
a4030801	141	}
a4030801	142	}
528ec956	143
	144	// esi = rot_comp.Stamp_Map_Adr;
	145	edi = stamp_base[ebx] \| (stamp_base[ebx+1] << 16);
a4030801	146	esi = edi;
	147	edi >>= (11+1);
	148	esi = (esi & 0x7ff) << 7;
528ec956	149	if (!esi) { pixel = 0; goto Pixel_Out; }
a4030801	150	edi &= (0x1c>>1);
	151	eax = ecx;
	152	ebx = edx;
	153	if (func & 2) edi \|= 1; // 32 dots?
	154	switch (edi)
	155	{
	156	case 0x00: // No_Flip_0, 16x16 dots
	157	ebx = (ebx >> 9) & 0x3c;
	158	ebx += esi;
	159	edi = (eax & 0x3800) ^ 0x1000; // bswap
	160	eax = ((eax >> 8) & 0x40) + ebx;
a4030801	161	break;
	162	case 0x01: // No_Flip_0, 32x32 dots
	163	ebx = (ebx >> 9) & 0x7c;
	164	ebx += esi;
	165	edi = (eax & 0x3800) ^ 0x1000; // bswap
	166	eax = ((eax >> 7) & 0x180) + ebx;
a4030801	167	break;
	168	case 0x02: // No_Flip_90, 16x16 dots
	169	eax = (eax >> 9) & 0x3c;
	170	eax += esi;
	171	edi = (ebx & 0x3800) ^ 0x2800; // bswap
	172	eax += ((ebx >> 8) & 0x40) ^ 0x40;
a4030801	173	break;
	174	case 0x03: // No_Flip_90, 32x32 dots
	175	eax = (eax >> 9) & 0x7c;
	176	eax += esi;
	177	edi = (ebx & 0x3800) ^ 0x2800; // bswap
01bc6b19	178	eax += ((ebx >> 7) & 0x180) ^ 0x180;
a4030801	179	break;
	180	case 0x04: // No_Flip_180, 16x16 dots
	181	ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
	182	ebx += esi;
	183	edi = (eax & 0x3800) ^ 0x2800; // bswap and flip
	184	eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
a4030801	185	break;
	186	case 0x05: // No_Flip_180, 32x32 dots
	187	ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
	188	ebx += esi;
	189	edi = (eax & 0x3800) ^ 0x2800; // bswap and flip
	190	eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
a4030801	191	break;
	192	case 0x06: // No_Flip_270, 16x16 dots
	193	eax = ((eax >> 9) & 0x3c) ^ 0x3c;
	194	eax += esi;
	195	edi = (ebx & 0x3800) ^ 0x1000; // bswap
	196	eax += (ebx >> 8) & 0x40;
a4030801	197	break;
	198	case 0x07: // No_Flip_270, 32x32 dots
	199	eax = ((eax >> 9) & 0x7c) ^ 0x7c;
	200	eax += esi;
	201	edi = (ebx & 0x3800) ^ 0x1000; // bswap
	202	eax += (ebx >> 7) & 0x180;
a4030801	203	break;
a4030801	204	case 0x08: // Flip_0, 16x16 dots
01bc6b19	205	ebx = (ebx >> 9) & 0x3c;
a4030801	206	ebx += esi;
	207	edi = (eax & 0x3800) ^ 0x2800; // bswap, flip
	208	eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
a4030801	209	break;
a4030801	210	case 0x09: // Flip_0, 32x32 dots
01bc6b19	211	ebx = (ebx >> 9) & 0x7c;
a4030801	212	ebx += esi;
	213	edi = (eax & 0x3800) ^ 0x2800; // bswap, flip
	214	eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
a4030801	215	break;
	216	case 0x0a: // Flip_90, 16x16 dots
	217	eax = ((eax >> 9) & 0x3c) ^ 0x3c;
	218	eax += esi;
	219	edi = (ebx & 0x3800) ^ 0x2800; // bswap, flip
	220	eax += ((ebx >> 8) & 0x40) ^ 0x40;
a4030801	221	break;
	222	case 0x0b: // Flip_90, 32x32 dots
	223	eax = ((eax >> 9) & 0x7c) ^ 0x7c;
	224	eax += esi;
	225	edi = (ebx & 0x3800) ^ 0x2800; // bswap, flip
	226	eax += ((ebx >> 7) & 0x180) ^ 0x180;
a4030801	227	break;
	228	case 0x0c: // Flip_180, 16x16 dots
	229	ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
	230	ebx += esi;
	231	edi = (eax & 0x3800) ^ 0x1000; // bswap
	232	eax = ((eax >> 8) & 0x40) + ebx;
a4030801	233	break;
	234	case 0x0d: // Flip_180, 32x32 dots
	235	ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
	236	ebx += esi;
	237	edi = (eax & 0x3800) ^ 0x1000; // bswap
	238	eax = ((eax >> 7) & 0x180) + ebx;
a4030801	239	break;
	240	case 0x0e: // Flip_270, 16x16 dots
	241	eax = (eax >> 9) & 0x3c;
	242	eax += esi;
	243	edi = (ebx & 0x3800) ^ 0x1000; // bswap, flip
	244	eax += (ebx >> 8) & 0x40;
a4030801	245	break;
	246	case 0x0f: // Flip_270, 32x32 dots
	247	eax = (eax >> 9) & 0x7c;
	248	eax += esi;
	249	edi = (ebx & 0x3800) ^ 0x1000; // bswap, flip
	250	eax += (ebx >> 7) & 0x180;
a4030801	251	break;
	252	}
	253
01bc6b19	254	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
01bc6b19	255	if (!(edi & 0x800)) pixel >>= 4;
528ec956	256	else pixel &= 0x0f;
01bc6b19	257
a4030801	258	Pixel_Out:
a4030801	259	if (!pixel && (func & 0x18)) goto Next_Pixel;
528ec956	260	esi = Buffer_Adr + ((XD>>1)^1); // pixel addr
a4030801	261	eax = *(Pico_mcd->word_ram2M + esi); // old pixel
528ec956	262	if (XD & 1)
a4030801	263	{
	264	if ((eax & 0x0f) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite
	265	*(Pico_mcd->word_ram2M + esi) = pixel \| (eax & 0xf0);
	266	}
	267	else
	268	{
	269	if ((eax & 0xf0) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite
	270	*(Pico_mcd->word_ram2M + esi) = (pixel << 4) \| (eax & 0xf);
	271	}
	272
	273
	274	Next_Pixel:
528ec956	275	ecx += (DYXS << 16) >> 16; // rot_comp.DXS;
	276	edx += DYXS >> 16; // rot_comp.DYS;
	277	XD++;
	278	if (XD >= 8)
a4030801	279	{
528ec956	280	Buffer_Adr += ((rot_comp.Reg_5C & 0x1f) + 1) << 5;
528ec956	281	XD = 0;
a4030801	282	}
528ec956	283	H_Dot--;
a4030801	284	}
528ec956	285	// end while
a4030801	286
	287
	288	//nothing_to_draw:
	289	rot_comp.YD++;
	290	// rot_comp.V_Dot--; // will be done by caller
	291	}
d1df8786	292
d1df8786	293
cb4a513a	294	void gfx_cd_update(void)
cb4a513a	295	{
d1df8786	296	unsigned char V_Dot = (unsigned char ) &rot_comp.Reg_64;
	297	int jobs;
	298
	299	dprintf("gfx_cd_update, Reg_64 = %04x", rot_comp.Reg_64);
	300
	301	if (!*V_Dot)
	302	{
d1df8786	303	gfx_completed();
	304	return;
	305	}
	306
	307	jobs = rot_comp.Float_Part >> 16;
	308
	309	if (!jobs)
	310	{
	311	rot_comp.Float_Part += rot_comp.Draw_Speed;
	312	return;
	313	}
	314
	315	rot_comp.Float_Part &= 0xffff;
	316	rot_comp.Float_Part += rot_comp.Draw_Speed;
	317
	318	while (jobs--)
	319	{
a4030801	320	if (PicoOpt & 0x1000)
	321	gfx_do(); // jmp [Jmp_Adr]:
	322
	323	(*V_Dot)--; // dec byte [V_Dot]
d1df8786	324
	325	if (!*V_Dot)
	326	{
	327	// GFX_Completed:
	328	gfx_completed();
	329	return;
	330	}
	331	}
cb4a513a	332	}
	333
	334
	335	unsigned int gfx_cd_read(unsigned int a)
	336	{
d1df8786	337	unsigned int d = 0;
	338
	339	switch (a) {
	340	case 0x58: d = rot_comp.Reg_58; break;
	341	case 0x5A: d = rot_comp.Reg_5A; break;
	342	case 0x5C: d = rot_comp.Reg_5C; break;
	343	case 0x5E: d = rot_comp.Reg_5E; break;
	344	case 0x60: d = rot_comp.Reg_60; break;
	345	case 0x62: d = rot_comp.Reg_62; break;
	346	case 0x64: d = rot_comp.Reg_64; break;
	347	case 0x66: break;
fa1e5e29	348	default: dprintf("gfx_cd_read FIXME: unexpected address: %02x", a); break;
d1df8786	349	}
	350
	351	dprintf("gfx_cd_read(%02x) = %04x", a, d);
cb4a513a	352
cb4a513a	353	return 0;
	354	}
	355
5c69a605	356	void gfx_cd_write16(unsigned int a, unsigned int d)
cb4a513a	357	{
5c69a605	358	dprintf("gfx_cd_write16(%x, %04x)", a, d);
cb4a513a	359
cb4a513a	360	switch (a) {
d1df8786	361	case 0x58: // .Reg_Stamp_Size
	362	rot_comp.Reg_58 = d & 7;
	363	return;
	364
	365	case 0x5A: // .Reg_Stamp_Adr
	366	rot_comp.Reg_5A = d & 0xffe0;
	367	return;
	368
	369	case 0x5C: // .Reg_IM_VCell_Size
	370	rot_comp.Reg_5C = d & 0x1f;
	371	return;
	372
	373	case 0x5E: // .Reg_IM_Adr
	374	rot_comp.Reg_5E = d & 0xFFF8;
	375	return;
	376
	377	case 0x60: // .Reg_IM_Offset
	378	rot_comp.Reg_60 = d & 0x3f;
	379	return;
	380
	381	case 0x62: // .Reg_IM_HDot_Size
	382	rot_comp.Reg_62 = d & 0x1ff;
	383	return;
	384
	385	case 0x64: // .Reg_IM_VDot_Size
	386	rot_comp.Reg_64 = d & 0xff; // V_Dot, must be 32bit?
	387	return;
	388
	389	case 0x66: // .Reg_Vector_Adr
	390	rot_comp.Reg_66 = d & 0xfffe;
cb4a513a	391	if (Pico_mcd->s68k_regs[3]&4) return; // can't do tanformations in 1M mode
	392	gfx_cd_start();
	393	return;
d1df8786	394
5c69a605	395	default: dprintf("gfx_cd_write16 FIXME: unexpected address: %02x", a); return;
cb4a513a	396	}
	397	}
	398
d1df8786	399
51a902ae	400	void gfx_cd_reset(void)
51a902ae	401	{
fa1e5e29	402	memset(&rot_comp.Reg_58, 0, sizeof(rot_comp));
	403	}
	404
	405
	406	// --------------------------------
	407
	408	#include "cell_map.c"
	409
	410	typedef unsigned short u16;
	411
0a051f55	412	// check: Heart of the alien, jaguar xj 220
fa1e5e29	413	void DmaSlowCell(unsigned int source, unsigned int a, int len, unsigned char inc)
	414	{
	415	unsigned char *base;
	416	unsigned int asrc, a2;
	417	u16 *r;
	418
	419	base = Pico_mcd->word_ram1M[Pico_mcd->s68k_regs[3]&1];
	420
	421	switch (Pico.video.type)
	422	{
	423	case 1: // vram
	424	r = Pico.vram;
	425	for(; len; len--)
	426	{
	427	asrc = cell_map(source >> 2) << 2;
	428	asrc \|= source & 2;
	429	// if(a&1) d=(d<<8)\|(d>>8); // ??
	430	r[a>>1] = (u16 )(base + asrc);
	431	source += 2;
	432	// AutoIncrement
	433	a=(u16)(a+inc);
	434	}
	435	rendstatus\|=0x10;
	436	break;
	437
	438	case 3: // cram
	439	Pico.m.dirtyPal = 1;
	440	r = Pico.cram;
	441	for(a2=a&0x7f; len; len--)
	442	{
	443	asrc = cell_map(source >> 2) << 2;
	444	asrc \|= source & 2;
	445	r[a2>>1] = (u16 )(base + asrc);
	446	source += 2;
	447	// AutoIncrement
	448	a2+=inc;
	449	// good dest?
	450	if(a2 >= 0x80) break;
	451	}
	452	a=(a&0xff00)\|a2;
	453	break;
	454
	455	case 5: // vsram[a&0x003f]=d;
	456	r = Pico.vsram;
	457	for(a2=a&0x7f; len; len--)
	458	{
	459	asrc = cell_map(source >> 2) << 2;
	460	asrc \|= source & 2;
	461	r[a2>>1] = (u16 )(base + asrc);
	462	source += 2;
	463	// AutoIncrement
	464	a2+=inc;
	465	// good dest?
	466	if(a2 >= 0x80) break;
	467	}
	468	a=(a&0xff00)\|a2;
	469	break;
	470	}
	471	// remember addr
	472	Pico.video.addr=(u16)a;
51a902ae	473	}
51a902ae	474