4 TCHAR RomName[260]={0};
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5 static unsigned char *RomData=NULL;
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6 static unsigned int RomSize=0;
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8 static unsigned int LastSecond=0;
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9 static int FramesDone=0;
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10 static int FramesPerSecond=60;
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14 static int TargetInit()
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16 RECT rect={0,0,0,0};
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19 memset(&Targ,0,sizeof(Targ));
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23 ClientToScreen(FrameWnd,&Targ.point);
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25 GetClientRect(FrameWnd,&rect);
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26 // Find out where the top of the screen should go:
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27 rect.top=(rect.bottom-height)>>1;
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28 if (rect.top<0) rect.top=0;
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29 rect.bottom=rect.top+height;
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31 Targ.view=rect; // Save the view rectangle (client coordinates)
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33 Targ.offset=Targ.view.top+Targ.point.y;
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38 static int TargetUpdate()
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40 // Need to repaint the view rectangle:
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41 GetUpdateRect(FrameWnd,&Targ.update,0);
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43 Targ.top =Targ.update.top +Targ.point.y;
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44 Targ.bottom=Targ.update.bottom+Targ.point.y;
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53 EmulateExit(); // Make sure exited
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55 TargetInit(); // Find out where to put the screen
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60 f=_wfopen(RomName,L"rb"); if (f==NULL) return 1;
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61 PicoCartLoad(f,&RomData,&RomSize);
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64 PicoCartInsert(RomData,RomSize);
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66 LastSecond=GetTickCount(); FramesDone=0;
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74 PicoCartInsert(NULL,0);
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75 if (RomData) free(RomData); RomData=NULL; RomSize=0;
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80 // Callback for scanline data:
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81 static int EmulateScan(unsigned int scan,unsigned short *sdata)
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84 unsigned short *ps=NULL,*end=NULL;
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85 unsigned char *pd=NULL;
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88 if ((scan&3)==1) return 0;
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89 scan+=scan<<1; scan>>=2; // Reduce size to 75%
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92 if ((int)scan< Targ.top) return 0; // Out of range
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93 if ((int)scan>=Targ.bottom) return 0; // Out of range
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95 pd=Targ.screen+scan*GXDisp.cbyPitch;
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98 xpitch=GXDisp.cbxPitch;
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99 ps=sdata; end=ps+320;
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101 // Reduce 4 pixels into 3
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104 *(unsigned short *)pd=ps[0]; pd+=xpitch;
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105 *(unsigned short *)pd=(unsigned short)((ps[1]+ps[2])>>1); pd+=xpitch;
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106 *(unsigned short *)pd=ps[3]; pd+=xpitch;
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114 static int DoFrame()
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116 int pad=0,i=0,ks=0;
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117 char map[8]={0,1,2,3,5,6,4,7}; // u/d/l/r/b/c/a/start
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121 ks=GetAsyncKeyState(Config.key[map[i]]);
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130 static int DrawFrame()
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132 // Now final frame is drawn:
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133 InvalidateRect(FrameWnd,&Targ.view,0);
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135 if (Main3800) Targ.screen=(unsigned char *)0xac0755a0; // The real 3800 screen address
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136 else Targ.screen=(unsigned char *)GXBeginDraw();
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138 if (Targ.screen==NULL) return 1;
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142 PicoScan=EmulateScan; // Setup scanline callback
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148 if (Main3800==0) GXEndDraw();
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152 ValidateRect(FrameWnd,&Targ.update);
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156 // Print the status of the 68000:
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157 HDC hdc=GetDC(FrameWnd);
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158 RECT rect={0,220, 240,260};
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159 TCHAR status[128]={0};
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161 wsprintf(status,L"%.120S",PicoStatus);
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163 FillRect(hdc,&rect,(HBRUSH)GetStockObject(WHITE_BRUSH));
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164 SetBkMode(hdc,TRANSPARENT);
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166 DrawText(hdc,status,lstrlen(status),&rect,0);
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167 ReleaseDC(FrameWnd,hdc);
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176 int time=0,frame=0;
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178 if (RomData==NULL) return 1;
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181 time=GetTickCount()-LastSecond; // This will be about 0-1000 ms
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182 frame=time*FramesPerSecond/1000;
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183 need=frame-FramesDone;
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186 if (FramesPerSecond>0)
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188 // Carry over any >60 frame count to one second
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189 while (FramesDone>=FramesPerSecond) { FramesDone-=FramesPerSecond; LastSecond+=1000; }
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192 if (need<=0) { Sleep(2); return 1; }
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193 if (need>4) need=4; // Limit frame skipping
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195 for (i=0;i<need-1;i++) DoFrame(); // Frame skip if needed
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210 // Convert to signed:
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211 // for (p=0;p<PsndLen<<1;p++) PsndOut[p]+=0x8000;
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213 PsndRate=PsndLen=0;
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