| 1 | \r |
| 2 | #include "app.h"\r |
| 3 | \r |
| 4 | extern "C" {\r |
| 5 | struct Pico\r |
| 6 | {\r |
| 7 | unsigned char ram[0x10000]; // 0x00000 scratch ram\r |
| 8 | unsigned short vram[0x8000]; // 0x10000\r |
| 9 | unsigned char zram[0x2000]; // 0x20000 Z80 ram\r |
| 10 | unsigned char ioports[0x10];\r |
| 11 | unsigned int pad[0x3c]; // unused\r |
| 12 | unsigned short cram[0x40]; // 0x22100\r |
| 13 | unsigned short vsram[0x40]; // 0x22180\r |
| 14 | \r |
| 15 | unsigned char *rom; // 0x22200\r |
| 16 | unsigned int romsize; // 0x22204\r |
| 17 | \r |
| 18 | // struct PicoMisc m;\r |
| 19 | // struct PicoVideo video;\r |
| 20 | };\r |
| 21 | extern struct Pico Pico;\r |
| 22 | }\r |
| 23 | \r |
| 24 | unsigned short *EmuScreen=NULL;\r |
| 25 | extern "C" unsigned short *framebuff=NULL;\r |
| 26 | int EmuWidth=0,EmuHeight=0;\r |
| 27 | static int frame=0;\r |
| 28 | static int EmuScan(unsigned int num, void *sdata);\r |
| 29 | \r |
| 30 | int EmuInit()\r |
| 31 | {\r |
| 32 | int len=0;\r |
| 33 | \r |
| 34 | // PicoOpt=-1;\r |
| 35 | // PsndRate=44100; PsndLen=DSoundSeg;\r |
| 36 | \r |
| 37 | PicoInit();\r |
| 38 | \r |
| 39 | // Allocate screen:\r |
| 40 | EmuWidth=320; EmuHeight=224;\r |
| 41 | len=EmuWidth*EmuHeight; len<<=1;\r |
| 42 | EmuScreen=(unsigned short *)malloc(len); if (EmuScreen==NULL) return 1;\r |
| 43 | framebuff=(unsigned short *)malloc((8+320)*(8+224+8)*2);\r |
| 44 | memset(EmuScreen,0,len);\r |
| 45 | \r |
| 46 | PicoScan=EmuScan;\r |
| 47 | \r |
| 48 | return 0;\r |
| 49 | }\r |
| 50 | \r |
| 51 | void EmuExit()\r |
| 52 | {\r |
| 53 | //RomFree();\r |
| 54 | free(EmuScreen); EmuScreen=NULL; // Deallocate screen\r |
| 55 | free(framebuff);\r |
| 56 | EmuWidth=EmuHeight=0;\r |
| 57 | \r |
| 58 | PicoExit();\r |
| 59 | }\r |
| 60 | \r |
| 61 | // Megadrive scanline callback:\r |
| 62 | static int EmuScan(unsigned int num, void *sdata)\r |
| 63 | {\r |
| 64 | unsigned short *pd=NULL,*end=NULL;\r |
| 65 | unsigned short *ps=NULL;\r |
| 66 | \r |
| 67 | if (num>=(unsigned int)EmuHeight) return 0;\r |
| 68 | \r |
| 69 | // Copy scanline to screen buffer:\r |
| 70 | pd=EmuScreen+(num<<8)+(num<<6); end=pd+320;\r |
| 71 | ps=(unsigned short *)sdata;\r |
| 72 | \r |
| 73 | do { *pd++=(unsigned short)PicoCram(*ps++); } while (pd<end);\r |
| 74 | \r |
| 75 | return 0;\r |
| 76 | }\r |
| 77 | \r |
| 78 | int EmuFrame()\r |
| 79 | {\r |
| 80 | char map[12]={0,1,2,3,8,9,10,4,11,12,13,14}; // Joypads, format is UDLR BCAS ZYXM\r |
| 81 | int a=0,input=0;\r |
| 82 | \r |
| 83 | // Set Megadrive buttons:\r |
| 84 | for (a=0;a<12;a++)\r |
| 85 | {\r |
| 86 | int m=map[a];\r |
| 87 | if (m>=0) if (Inp.button[m]>30) input|=1<<a;\r |
| 88 | }\r |
| 89 | \r |
| 90 | PicoPad[0]=input;\r |
| 91 | \r |
| 92 | frame++;\r |
| 93 | PsndOut=(short *)DSoundNext; PicoFrame(); PsndOut=NULL;\r |
| 94 | \r |
| 95 | // rendermode2\r |
| 96 | if(PicoOpt&0x10) {\r |
| 97 | unsigned short *pd=EmuScreen;\r |
| 98 | unsigned char *ps=(unsigned char*)framebuff+328*8;\r |
| 99 | \r |
| 100 | unsigned short palHigh[0x40];\r |
| 101 | for(int i = 0; i < 0x40; i++)\r |
| 102 | palHigh[i]=(unsigned short)PicoCram(Pico.cram[i]);\r |
| 103 | \r |
| 104 | for(int y=0; y < 224; y++) {\r |
| 105 | ps+=8;\r |
| 106 | for(int x=0; x < 320; x++)\r |
| 107 | *pd++=palHigh[*ps++];\r |
| 108 | }\r |
| 109 | }\r |
| 110 | \r |
| 111 | return 0;\r |
| 112 | }\r |