X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=platform%2Flinux%2Ffakedasm.c;fp=platform%2Flinux%2Ffakedasm.c;h=d0e357c8955b4a8d14cbf4cb6a4ecd54c1bbd73c;hb=cc68a136aa179a5f32fe40208371eb9c2b0aadae;hp=0000000000000000000000000000000000000000;hpb=2cadbd5e56966f8b7a4e9790aba2f719cfcc38e8;p=picodrive.git

diff --git a/platform/linux/fakedasm.c b/platform/linux/fakedasm.c
new file mode 100644
index 0000000..d0e357c
--- /dev/null
+++ b/platform/linux/fakedasm.c
@@ -0,0 +1,667 @@
+// This is part of Pico Library
+
+// (c) Copyright 2004 Dave, All rights reserved.
+// (c) Copyright 2006 notaz, All rights reserved.
+// Free for non-commercial use.
+
+// For commercial use, separate licencing terms must be obtained.
+
+
+#include "../../Pico/PicoInt.h"
+#undef blockcpy
+
+extern unsigned short DefOutBuff[320*2];
+extern unsigned char  HighCol[8+320+8];
+extern char HighSprZ[320+8+8]; // Z-buffer for accurate sprites and shadow/hilight mode
+                        // (if bit 7 == 0, sh caused by tile; if bit 6 == 0 pixel must be shadowed, else hilighted, if bit5 == 1)
+// lsb->msb: moved sprites, all window tiles don't use same priority, accurate sprites (copied from PicoOpt), interlace
+//           dirty sprites, sonic mode
+extern int rendstatus;
+extern int Scanline; // Scanline
+
+
+struct TileStrip
+{
+  int nametab; // Position in VRAM of name table (for this tile line)
+  int line;    // Line number in pixels 0x000-0x3ff within the virtual tilemap 
+  int hscroll; // Horizontal scroll value in pixels for the line
+  int xmask;   // X-Mask (0x1f - 0x7f) for horizontal wraparound in the tilemap
+  int *hc;     // cache for high tile codes and their positions
+  int cells;   // cells (tiles) to draw (32 col mode doesn't need to update whole 320)
+};
+
+// utility
+void *blockcpy(void *dst, const void *src, size_t n)
+{
+	return memcpy(dst, src, n);
+}
+
+void blockcpy_or(void *dst, void *src, size_t n, int pat)
+{
+  unsigned char *pd = dst, *ps = src;
+  for (; n; n--)
+    *pd++ = (unsigned char) (*ps++ | pat);
+}
+
+
+static int TileNorm(int sx,int addr,int pal)
+{
+  unsigned char *pd = HighCol+sx;
+  unsigned int pack=0; unsigned int t=0;
+
+  pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
+  if (pack)
+  {
+    t=pack&0x0000f000; if (t) pd[0]=(unsigned char)(pal|(t>>12));
+    t=pack&0x00000f00; if (t) pd[1]=(unsigned char)(pal|(t>> 8));
+    t=pack&0x000000f0; if (t) pd[2]=(unsigned char)(pal|(t>> 4));
+    t=pack&0x0000000f; if (t) pd[3]=(unsigned char)(pal|(t    ));
+    t=pack&0xf0000000; if (t) pd[4]=(unsigned char)(pal|(t>>28));
+    t=pack&0x0f000000; if (t) pd[5]=(unsigned char)(pal|(t>>24));
+    t=pack&0x00f00000; if (t) pd[6]=(unsigned char)(pal|(t>>20));
+    t=pack&0x000f0000; if (t) pd[7]=(unsigned char)(pal|(t>>16));
+    return 0;
+  }
+
+  return 1; // Tile blank
+}
+
+static int TileFlip(int sx,int addr,int pal)
+{
+  unsigned char *pd = HighCol+sx;
+  unsigned int pack=0; unsigned int t=0;
+
+  pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
+  if (pack)
+  {
+    t=pack&0x000f0000; if (t) pd[0]=(unsigned char)(pal|(t>>16));
+    t=pack&0x00f00000; if (t) pd[1]=(unsigned char)(pal|(t>>20));
+    t=pack&0x0f000000; if (t) pd[2]=(unsigned char)(pal|(t>>24));
+    t=pack&0xf0000000; if (t) pd[3]=(unsigned char)(pal|(t>>28));
+    t=pack&0x0000000f; if (t) pd[4]=(unsigned char)(pal|(t    ));
+    t=pack&0x000000f0; if (t) pd[5]=(unsigned char)(pal|(t>> 4));
+    t=pack&0x00000f00; if (t) pd[6]=(unsigned char)(pal|(t>> 8));
+    t=pack&0x0000f000; if (t) pd[7]=(unsigned char)(pal|(t>>12));
+    return 0;
+  }
+  return 1; // Tile blank
+}
+
+
+// tile renderers for hacky operator sprite support
+#define sh_pix(x) \
+  if(!t); \
+  else if(t==0xe) pd[x]=(unsigned char)((pd[x]&0x3f)|0x80); /* hilight */ \
+  else if(t==0xf) pd[x]=(unsigned char)((pd[x]&0x3f)|0xc0); /* shadow  */ \
+  else pd[x]=(unsigned char)(pal|t);
+
+static int TileNormSH(int sx,int addr,int pal)
+{
+  unsigned int pack=0; unsigned int t=0;
+  unsigned char *pd = HighCol+sx;
+
+  pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
+  if (pack)
+  {
+    t=(pack&0x0000f000)>>12; sh_pix(0);
+    t=(pack&0x00000f00)>> 8; sh_pix(1);
+    t=(pack&0x000000f0)>> 4; sh_pix(2);
+    t=(pack&0x0000000f)    ; sh_pix(3);
+    t=(pack&0xf0000000)>>28; sh_pix(4);
+    t=(pack&0x0f000000)>>24; sh_pix(5);
+    t=(pack&0x00f00000)>>20; sh_pix(6);
+    t=(pack&0x000f0000)>>16; sh_pix(7);
+    return 0;
+  }
+
+  return 1; // Tile blank
+}
+
+static int TileFlipSH(int sx,int addr,int pal)
+{
+  unsigned int pack=0; unsigned int t=0;
+  unsigned char *pd = HighCol+sx;
+
+  pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
+  if (pack)
+  {
+    t=(pack&0x000f0000)>>16; sh_pix(0);
+    t=(pack&0x00f00000)>>20; sh_pix(1);
+    t=(pack&0x0f000000)>>24; sh_pix(2);
+    t=(pack&0xf0000000)>>28; sh_pix(3);
+    t=(pack&0x0000000f)    ; sh_pix(4);
+    t=(pack&0x000000f0)>> 4; sh_pix(5);
+    t=(pack&0x00000f00)>> 8; sh_pix(6);
+    t=(pack&0x0000f000)>>12; sh_pix(7);
+    return 0;
+  }
+  return 1; // Tile blank
+}
+
+
+// --------------------------------------------
+
+static void DrawStrip(struct TileStrip *ts, int sh)
+{
+  int tilex=0,dx=0,ty=0,code=0,addr=0,cells;
+  int oldcode=-1,blank=-1; // The tile we know is blank
+  int pal=0;
+
+  // Draw tiles across screen:
+  tilex=(-ts->hscroll)>>3;
+  ty=(ts->line&7)<<1; // Y-Offset into tile
+  dx=((ts->hscroll-1)&7)+1;
+  cells = ts->cells;
+  if(dx != 8) cells++; // have hscroll, need to draw 1 cell more
+
+  for (; cells; dx+=8,tilex++,cells--)
+  {
+    int zero=0;
+
+    code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
+    if (code==blank) continue;
+    if (code>>15) { // high priority tile
+      int cval = code | (dx<<16) | (ty<<25);
+      if(code&0x1000) cval^=7<<26;
+      *ts->hc++ = cval; // cache it
+      continue;
+    }
+
+    if (code!=oldcode) {
+      oldcode = code;
+      // Get tile address/2:
+      addr=(code&0x7ff)<<4;
+      addr+=ty;
+      if (code&0x1000) addr^=0xe; // Y-flip
+
+//      pal=Pico.cram+((code>>9)&0x30);
+      pal=((code>>9)&0x30)|(sh<<6);
+    }
+
+    if (code&0x0800) zero=TileFlip(dx,addr,pal);
+    else             zero=TileNorm(dx,addr,pal);
+
+    if (zero) blank=code; // We know this tile is blank now
+  }
+
+  // terminate the cache list
+  *ts->hc = 0;
+}
+
+static void DrawStripVSRam(struct TileStrip *ts, int plane)
+{
+  int tilex=0,dx=0,ty=0,code=0,addr=0,cell=0,nametabadd=0;
+  int oldcode=-1,blank=-1; // The tile we know is blank
+  int pal=0,scan=Scanline;
+
+  // Draw tiles across screen:
+  tilex=(-ts->hscroll)>>3;
+  dx=((ts->hscroll-1)&7)+1;
+  if(dx != 8) {
+    int vscroll, line;
+    cell--; // have hscroll, start with negative cell
+    // also calculate intial VS stuff
+    vscroll=Pico.vsram[plane];
+
+    // Find the line in the name table
+    line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask ..
+    nametabadd=(line>>3)<<(ts->line>>24);    // .. and shift[width]
+    ty=(line&7)<<1; // Y-Offset into tile
+  }
+
+  for (; cell < ts->cells; dx+=8,tilex++,cell++)
+  {
+    int zero=0;
+
+    if((cell&1)==0) {
+      int line,vscroll;
+      vscroll=Pico.vsram[plane+(cell&~1)];
+
+      // Find the line in the name table
+      line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask ..
+      nametabadd=(line>>3)<<(ts->line>>24);    // .. and shift[width]
+      ty=(line&7)<<1; // Y-Offset into tile
+    }
+
+    code=Pico.vram[ts->nametab+nametabadd+(tilex&ts->xmask)];
+    if (code==blank) continue;
+    if (code>>15) { // high priority tile
+      int cval = code | (dx<<16) | (ty<<25);
+      if(code&0x1000) cval^=7<<26;
+      *ts->hc++ = cval; // cache it
+      continue;
+    }
+
+    if (code!=oldcode) {
+      oldcode = code;
+      // Get tile address/2:
+      addr=(code&0x7ff)<<4;
+      if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
+
+//      pal=Pico.cram+((code>>9)&0x30);
+      pal=((code>>9)&0x30);
+    }
+
+    if (code&0x0800) zero=TileFlip(dx,addr,pal);
+    else             zero=TileNorm(dx,addr,pal);
+
+    if (zero) blank=code; // We know this tile is blank now
+  }
+
+  // terminate the cache list
+  *ts->hc = 0;
+}
+
+static void DrawStripInterlace(struct TileStrip *ts)
+{
+  int tilex=0,dx=0,ty=0,code=0,addr=0,cells;
+  int oldcode=-1,blank=-1; // The tile we know is blank
+  int pal=0;
+
+  // Draw tiles across screen:
+  tilex=(-ts->hscroll)>>3;
+  ty=(ts->line&15)<<1; // Y-Offset into tile
+  dx=((ts->hscroll-1)&7)+1;
+  cells = ts->cells;
+  if(dx != 8) cells++; // have hscroll, need to draw 1 cell more
+
+  for (; cells; dx+=8,tilex++,cells--)
+  {
+    int zero=0;
+
+    code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
+    if (code==blank) continue;
+    if (code>>15) { // high priority tile
+      int cval = (code&0xfc00) | (dx<<16) | (ty<<25);
+      cval|=(code&0x3ff)<<1;
+      if(code&0x1000) cval^=0xf<<26;
+      *ts->hc++ = cval; // cache it
+      continue;
+    }
+
+    if (code!=oldcode) {
+      oldcode = code;
+      // Get tile address/2:
+      addr=(code&0x7ff)<<5;
+      if (code&0x1000) addr+=30-ty; else addr+=ty; // Y-flip
+
+//      pal=Pico.cram+((code>>9)&0x30);
+      pal=((code>>9)&0x30);
+    }
+
+    if (code&0x0800) zero=TileFlip(dx,addr,pal);
+    else             zero=TileNorm(dx,addr,pal);
+
+    if (zero) blank=code; // We know this tile is blank now
+  }
+
+  // terminate the cache list
+  *ts->hc = 0;
+}
+
+// --------------------------------------------
+
+void DrawLayer(int plane, int *hcache, int maxcells, int sh)
+{
+  struct PicoVideo *pvid=&Pico.video;
+  const char shift[4]={5,6,5,7}; // 32,64 or 128 sized tilemaps (2 is invalid)
+  struct TileStrip ts;
+  int width, height, ymask;
+  int vscroll, htab;
+
+  ts.hc=hcache;
+  ts.cells=maxcells;
+
+  // Work out the TileStrip to draw
+
+  // Work out the name table size: 32 64 or 128 tiles (0-3)
+  width=pvid->reg[16];
+  height=(width>>4)&3; width&=3;
+
+  ts.xmask=(1<<shift[width])-1; // X Mask in tiles (0x1f-0x7f)
+  ymask=(height<<8)|0xff;       // Y Mask in pixels
+  if(width == 1)   ymask&=0x1ff;
+  else if(width>1) ymask =0x0ff;
+
+  // Find name table:
+  if (plane==0) ts.nametab=(pvid->reg[2]&0x38)<< 9; // A
+  else          ts.nametab=(pvid->reg[4]&0x07)<<12; // B
+
+  htab=pvid->reg[13]<<9; // Horizontal scroll table address
+  if ( pvid->reg[11]&2)     htab+=Scanline<<1; // Offset by line
+  if ((pvid->reg[11]&1)==0) htab&=~0xf; // Offset by tile
+  htab+=plane; // A or B
+
+  // Get horizontal scroll value, will be masked later
+  ts.hscroll=Pico.vram[htab&0x7fff];
+
+  if((pvid->reg[12]&6) == 6) {
+    // interlace mode 2
+    vscroll=Pico.vsram[plane]; // Get vertical scroll value
+
+    // Find the line in the name table
+    ts.line=(vscroll+(Scanline<<1))&((ymask<<1)|1);
+    ts.nametab+=(ts.line>>4)<<shift[width];
+
+    DrawStripInterlace(&ts);
+  } else if( pvid->reg[11]&4) {
+    // shit, we have 2-cell column based vscroll
+    // luckily this doesn't happen too often
+    ts.line=ymask|(shift[width]<<24); // save some stuff instead of line
+    DrawStripVSRam(&ts, plane);
+  } else {
+    vscroll=Pico.vsram[plane]; // Get vertical scroll value
+
+    // Find the line in the name table
+    ts.line=(vscroll+Scanline)&ymask;
+    ts.nametab+=(ts.line>>3)<<shift[width];
+
+    DrawStrip(&ts, sh);
+  }
+}
+
+
+// --------------------------------------------
+
+// tstart & tend are tile pair numbers
+void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache
+{
+  struct PicoVideo *pvid=&Pico.video;
+  int tilex=0,ty=0,nametab,code=0;
+  int blank=-1; // The tile we know is blank
+
+  // Find name table line:
+  if (pvid->reg[12]&1)
+  {
+    nametab=(pvid->reg[3]&0x3c)<<9; // 40-cell mode
+    nametab+=(Scanline>>3)<<6;
+  }
+  else
+  {
+    nametab=(pvid->reg[3]&0x3e)<<9; // 32-cell mode
+    nametab+=(Scanline>>3)<<5;
+  }
+
+  tilex=tstart<<1;
+  tend<<=1;
+
+  ty=(Scanline&7)<<1; // Y-Offset into tile
+
+  if(!(rendstatus&2)) {
+    // check the first tile code
+    code=Pico.vram[nametab+tilex];
+    // if the whole window uses same priority (what is often the case), we may be able to skip this field
+    if((code>>15) != prio) return;
+  }
+
+  // Draw tiles across screen:
+  for (; tilex < tend; tilex++)
+  {
+    int addr=0,zero=0;
+    int pal;
+
+    code=Pico.vram[nametab+tilex];
+    if(code==blank) continue;
+    if((code>>15) != prio) {
+      rendstatus|=2;
+      continue;
+    }
+
+    pal=((code>>9)&0x30);
+
+    if(sh) {
+      int tmp, *zb = (int *)(HighCol+8+(tilex<<3));
+      if(prio) {
+        tmp = *zb;
+        if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;
+        if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000;
+        *zb++=tmp; tmp = *zb;
+        if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;
+        if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000;
+        *zb++=tmp;
+      } else {
+        pal |= 0x40;
+      }
+    }
+
+    // Get tile address/2:
+    addr=(code&0x7ff)<<4;
+    if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
+
+    if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);
+    else             zero=TileNorm(8+(tilex<<3),addr,pal);
+
+    if (zero) blank=code; // We know this tile is blank now
+  }
+
+  // terminate the cache list
+  //*hcache = 0;
+}
+
+// --------------------------------------------
+
+void DrawTilesFromCache(int *hc, int sh)
+{
+  int code, addr, zero, dx;
+  int pal;
+  short blank=-1; // The tile we know is blank
+
+  // *ts->hc++ = code | (dx<<16) | (ty<<25); // cache it
+
+  while((code=*hc++)) {
+    if(!sh && (short)code == blank) continue;
+
+    // Get tile address/2:
+    addr=(code&0x7ff)<<4;
+    addr+=(unsigned int)code>>25; // y offset into tile
+    dx=(code>>16)&0x1ff;
+    if(sh) {
+      unsigned char *zb = HighCol+dx;
+      if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
+      if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
+      if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
+      if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
+    }
+
+    pal=((code>>9)&0x30);
+
+    if (code&0x0800) zero=TileFlip(dx,addr,pal);
+    else             zero=TileNorm(dx,addr,pal);
+
+    if(zero) blank=(short)code;
+  }
+}
+
+// --------------------------------------------
+
+// Index + 0  :    hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size
+// Index + 4  :    xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
+
+void DrawSprite(int *sprite, int **hc, int sh)
+{
+  int width=0,height=0;
+  int row=0,code=0;
+  int pal;
+  int tile=0,delta=0;
+  int sx, sy;
+  int (*fTileFunc)(int sx,int addr,int pal);
+
+  // parse the sprite data
+  sy=sprite[0];
+  code=sprite[1];
+  sx=code>>16; // X
+  width=sy>>28;
+  height=(sy>>24)&7; // Width and height in tiles
+  sy=(sy<<16)>>16; // Y
+
+  row=Scanline-sy; // Row of the sprite we are on
+
+  if (code&0x1000) row=(height<<3)-1-row; // Flip Y
+
+  tile=code&0x7ff; // Tile number
+  tile+=row>>3; // Tile number increases going down
+  delta=height; // Delta to increase tile by going right
+  if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
+
+  tile<<=4; tile+=(row&7)<<1; // Tile address
+
+  if(code&0x8000) { // high priority - cache it
+    *(*hc)++ = (tile<<16)|((code&0x0800)<<5)|((sx<<6)&0x0000ffc0)|((code>>9)&0x30)|((sprite[0]>>16)&0xf);
+  } else {
+    delta<<=4; // Delta of address
+    pal=((code>>9)&0x30)|(sh<<6);
+
+    if(sh && (code&0x6000) == 0x6000) {
+      if(code&0x0800) fTileFunc=TileFlipSH;
+      else            fTileFunc=TileNormSH;
+    } else {
+      if(code&0x0800) fTileFunc=TileFlip;
+      else            fTileFunc=TileNorm;
+    }
+
+    for (; width; width--,sx+=8,tile+=delta)
+    {
+      if(sx<=0)   continue;
+      if(sx>=328) break; // Offscreen
+
+      tile&=0x7fff; // Clip tile address
+      fTileFunc(sx,tile,pal);
+    }
+  }
+}
+
+
+void DrawSpritesFromCache(int *hc, int sh)
+{
+  int code, tile, sx, delta, width;
+  int pal;
+  int (*fTileFunc)(int sx,int addr,int pal);
+
+  // *(*hc)++ = (tile<<16)|((code&0x0800)<<5)|((sx<<6)&0x0000ffc0)|((code>>9)&0x30)|((sprite[0]>>24)&0xf);
+
+  while((code=*hc++)) {
+    pal=(code&0x30);
+    delta=code&0xf;
+    width=delta>>2; delta&=3;
+    width++; delta++; // Width and height in tiles
+    if (code&0x10000) delta=-delta; // Flip X
+    delta<<=4;
+    tile=((unsigned int)code>>17)<<1;
+    sx=(code<<16)>>22; // sx can be negative (start offscreen), so sign extend
+
+    if(sh && pal == 0x30) { //
+      if(code&0x10000) fTileFunc=TileFlipSH;
+      else             fTileFunc=TileNormSH;
+    } else {
+      if(code&0x10000) fTileFunc=TileFlip;
+      else             fTileFunc=TileNorm;
+    }
+
+    for (; width; width--,sx+=8,tile+=delta)
+    {
+      if(sx<=0)   continue;
+      if(sx>=328) break; // Offscreen
+
+      tile&=0x7fff; // Clip tile address
+      fTileFunc(sx,tile,pal);
+    }
+  }
+}
+
+
+void BackFill(int reg7, int sh)
+{
+  unsigned int back=0;
+  unsigned int *pd=NULL,*end=NULL;
+
+  // Start with a blank scanline (background colour):
+  back=reg7&0x3f;
+  back|=sh<<6;
+  back|=back<<8;
+  back|=back<<16;
+
+  pd= (unsigned int *)(HighCol+8);
+  end=(unsigned int *)(HighCol+8+320);
+
+  do { pd[0]=pd[1]=pd[2]=pd[3]=back; pd+=4; } while (pd<end);
+}
+
+// --------------------------------------------
+
+extern unsigned short HighPal[0x100];
+
+void FinalizeLineBGR444(int sh)
+{
+  unsigned short *pd=DrawLineDest;
+  unsigned char  *ps=HighCol+8;
+  unsigned short *pal=Pico.cram;
+  int len, i, t;
+
+  if (Pico.video.reg[12]&1) {
+    len = 320;
+  } else {
+    if(!(PicoOpt&0x100)) pd+=32;
+    len = 256;
+  }
+
+  if(sh) {
+    pal=HighPal;
+    if(Pico.m.dirtyPal) {
+      blockcpy(pal, Pico.cram, 0x40*2);
+      // shadowed pixels
+      for(i = 0x3f; i >= 0; i--)
+        pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x0777);
+      // hilighted pixels
+      for(i = 0x3f; i >= 0; i--) {
+        t=pal[i]&0xeee;t+=0x444;if(t&0x10)t|=0xe;if(t&0x100)t|=0xe0;if(t&0x1000)t|=0xe00;t&=0xeee;
+        pal[0x80|i]=(unsigned short)t;
+      }
+      Pico.m.dirtyPal = 0;
+    }
+  }
+
+  for(i = 0; i < len; i++)
+    pd[i] = pal[ps[i]];
+}
+
+
+void FinalizeLineRGB555(int sh)
+{
+  unsigned short *pd=DrawLineDest;
+  unsigned char  *ps=HighCol+8;
+  unsigned short *pal=HighPal;
+  int len, i, t, dirtyPal = Pico.m.dirtyPal;
+
+  if(dirtyPal) {
+    unsigned short *ppal=Pico.cram;
+    for(i = 0x3f; i >= 0; i--)
+      pal[i] = (unsigned short) (((ppal[i]&0x00f)<<12)|((ppal[i]&0x0f0)<<3)|((ppal[i]&0xf00)>>7));
+    Pico.m.dirtyPal = 0;
+  }
+
+  if (Pico.video.reg[12]&1) {
+    len = 320;
+  } else {
+    if(!(PicoOpt&0x100)) pd+=32;
+    len = 256;
+  }
+
+  if(sh) {
+    if(dirtyPal) {
+      // shadowed pixels
+      for(i = 0x3f; i >= 0; i--)
+        pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x738e);
+      // hilighted pixels
+      for(i = 0x3f; i >= 0; i--) {
+        t=pal[i]&0xe71c;t+=0x4208;if(t&0x20)t|=0x1c;if(t&0x800)t|=0x700;if(t&0x10000)t|=0xe000;t&=0xe71c;
+        pal[0x80|i]=(unsigned short)t;
+      }
+    }
+  }
+
+  for(i = 0; i < len; i++)
+    pd[i] = pal[ps[i]];
+}
+
+
+